Corresponding author at: Camino del Tepeyac Res. La Hacienda, Z.C. 64890 Monterrey, Nuevo León, Mexico. Tel.: +52 1 811 277 8117.
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array:24 [ "pii" => "S1665579616300540" "issn" => "16655796" "doi" => "10.1016/j.rmu.2016.05.001" "estado" => "S300" "fechaPublicacion" => "2016-04-01" "aid" => "68" "copyright" => "Universidad Autónoma de Nuevo León" "copyrightAnyo" => "2016" "documento" => "simple-article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by-nc-nd/4.0/" "subdocumento" => "dis" "cita" => "Medicina Universitaria. 2016;18:125-9" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:2 [ "total" => 2296 "formatos" => array:3 [ "EPUB" => 60 "HTML" => 1983 "PDF" => 253 ] ] "itemSiguiente" => array:18 [ "pii" => "S1665579616300643" "issn" => "16655796" "doi" => "10.1016/j.rmu.2016.06.002" "estado" => "S300" "fechaPublicacion" => "2016-04-01" "aid" => "78" "documento" => "simple-article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by-nc-nd/4.0/" "subdocumento" => "dis" "cita" => "Medicina Universitaria. 2016;18:130-3" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:2 [ "total" => 1104 "formatos" => array:3 [ "EPUB" => 51 "HTML" => 775 "PDF" => 278 ] ] "en" => array:10 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Expert's corner: a personal approach</span>" "titulo" => "Outpatient surgery anesthesia" "tienePdf" => "en" "tieneTextoCompleto" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "130" "paginaFinal" => "133" ] ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 2088 "Ancho" => 2503 "Tamanyo" => 206241 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Society for Ambulatory Anesthesia Consensus Statement on Preoperative Selection of Adult. Patients with Obstructive Sleep Apnea Scheduled for Ambulatory Surgery Girish P. Joshi, MBBS, MD, FFARSCI,* Saravanan P. Ankichetty, MD, DA, MBA,† Tong J. Gan, MD, MHS, FRCA,‡ and Frances Chung, MBBS, FRCPC†.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "B.I. Garduño-Chávez, D. Palacios-Rios, G.M. Cornejo" "autores" => array:3 [ 0 => array:2 [ "nombre" => "B.I." "apellidos" => "Garduño-Chávez" ] 1 => array:2 [ "nombre" => "D." "apellidos" => "Palacios-Rios" ] 2 => array:2 [ "nombre" => "G.M." "apellidos" => "Cornejo" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S1665579616300643?idApp=UINPBA00004N" "url" => "/16655796/0000001800000071/v1_201608180032/S1665579616300643/v1_201608180032/en/main.assets" ] "itemAnterior" => array:18 [ "pii" => "S1665579616300588" "issn" => "16655796" "doi" => "10.1016/j.rmu.2016.05.003" "estado" => "S300" "fechaPublicacion" => "2016-04-01" "aid" => "72" "documento" => "article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by-nc-nd/4.0/" "subdocumento" => "ssu" "cita" => "Medicina Universitaria. 2016;18:115-24" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:2 [ "total" => 4106 "formatos" => array:3 [ "EPUB" => 60 "HTML" => 3347 "PDF" => 699 ] ] "en" => array:12 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Review article</span>" "titulo" => "The Zika virus disease: An overview" "tienePdf" => "en" "tieneTextoCompleto" => "en" "tieneResumen" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "115" "paginaFinal" => "124" ] ] "contieneResumen" => array:1 [ "en" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 766 "Ancho" => 2494 "Tamanyo" => 137453 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Zika virus genome organization. The figure shows the structural and nonstructural proteins the way they are organized throughout the genome as well as the untranslated regions in 5′ and 3′. The name, size in amino acids and function is showed for each protein. The figure is drawn to scale based on the reference ZIKV genome with GenBank access number: <a class="elsevierStyleInterRef" id="intr0005" href="ncbi-n:NC_012532.1">NC_012532.1</a>.<a class="elsevierStyleCrossRef" href="#bib0450"><span class="elsevierStyleSup">13</span></a> The information regarding viral protein function was obtained from the UniProt database using dengue virus due to the lack of published data. The accession number used was P17763.<a class="elsevierStyleCrossRef" href="#bib0770"><span class="elsevierStyleSup">77</span></a> NS: nonstructural protein; C: capsid; E: envelope; prM: precursor membrane; UTR: untranslated region; Kb: kilobases.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "K.A. Galán-Huerta, A.M. Rivas-Estilla, E.A. Martinez-Landeros, D. Arellanos-Soto, J. Ramos-Jiménez" "autores" => array:5 [ 0 => array:2 [ "nombre" => "K.A." "apellidos" => "Galán-Huerta" ] 1 => array:2 [ "nombre" => "A.M." "apellidos" => "Rivas-Estilla" ] 2 => array:2 [ "nombre" => "E.A." "apellidos" => "Martinez-Landeros" ] 3 => array:2 [ "nombre" => "D." "apellidos" => "Arellanos-Soto" ] 4 => array:2 [ "nombre" => "J." "apellidos" => "Ramos-Jiménez" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S1665579616300588?idApp=UINPBA00004N" "url" => "/16655796/0000001800000071/v1_201608180032/S1665579616300588/v1_201608180032/en/main.assets" ] "en" => array:15 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Expert's corner: a personal approach</span>" "titulo" => "How do we approach an adult patient with suspected acute appendicitis?" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "125" "paginaFinal" => "129" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "A.E. De la Torre-Quiroga, F.J. Bosques-Padilla, L.A. Morales-Garza" "autores" => array:3 [ 0 => array:4 [ "nombre" => "A.E." "apellidos" => "De la Torre-Quiroga" "email" => array:1 [ 0 => "delatorrequiroga@gmail.com" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor0005" ] ] ] 1 => array:3 [ "nombre" => "F.J." "apellidos" => "Bosques-Padilla" "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">c</span>" "identificador" => "aff0015" ] ] ] 2 => array:3 [ "nombre" => "L.A." "apellidos" => "Morales-Garza" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">c</span>" "identificador" => "aff0015" ] ] ] ] "afiliaciones" => array:3 [ 0 => array:3 [ "entidad" => "Tecnológico de Monterrey/Secretaria de Salud, Monterrey, Nuevo León, Mexico" "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:3 [ "entidad" => "Facultad de Medicina, Universidad Autónoma de Nuevo León, Mexico" "etiqueta" => "b" "identificador" => "aff0010" ] 2 => array:3 [ "entidad" => "Tecnológico de Monterrey, Monterrey, Nuevo León, Mexico" "etiqueta" => "c" "identificador" => "aff0015" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author at: Camino del Tepeyac Res. La Hacienda, Z.C. 64890 Monterrey, Nuevo León, Mexico. Tel.: +52 1 811 277 8117." ] ] ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 3496 "Ancho" => 2333 "Tamanyo" => 406297 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Approach in patients with suspected appendicitis.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Acute abdominal pain is defined as pain of non-traumatic origin with a maximum duration of 5 days and it represents a common complaint of patients presenting at the emergency department (ED).<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">1</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">There are many causes of acute abdominal pain that can be classified as urgent and non-urgent causes, the urgent causes require immediate treatment to prevent complications; mainly the location of pain can narrow the differential diagnosis. A complete evaluation is required to increase the diagnostic accuracy, leading to better outcomes.</p><p id="par0015" class="elsevierStylePara elsevierViewall">The most frequent surgical emergency worldwide is acute appendicitis, with a lifetime risk of 7–8%, in low-income and middle-income countries mortality is reported as 1–4%.<a class="elsevierStyleCrossRef" href="#bib0115"><span class="elsevierStyleSup">2</span></a> The diagnosis by clinical evaluation can be challenging in cases when the presentation is atypical and overlaps with other conditions, in these situations the use of image studies may be helpful. Delay of accurate diagnosis could result in rupture of the appendix, which is associated with worse prognosis.<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">3</span></a> The objectives of an accurate and prompt diagnosis are lowering the normal appendectomy and perforation rates.</p><p id="par0020" class="elsevierStylePara elsevierViewall">The authors recommend a diagnostic pathway in order to lower misdiagnosis, time to diagnosis and complications in patients in which acute appendicitis is suspected.</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Initial evaluation</span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">History</span><p id="par0025" class="elsevierStylePara elsevierViewall">The initial evaluation consists in history and physical examination; the differential diagnosis will be narrowed by the pain's location, radiation, and migration. General information about onset, duration, severity, quality of pain, associated symptoms, exacerbating and remitting factors should be described.<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">4</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">For appendicitis, right lower quadrant pain has the highest positive predictive value, although migration from periumbilical to right lower quadrant pain and fever also suggest the diagnosis.<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">4</span></a> Appendicitis is also associated with gastrointestinal symptoms like nausea, vomiting, and anorexia. Variations in the anatomic location of the appendix may account for the differing presentations of the somatic phase of pain.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">5</span></a> The order of development of symptoms and signs in appendicitis are epigastric or periumbilical pain, anorexia, nausea, vomiting, tenderness in lower abdomen, fever, and leukocytosis.<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">6</span></a></p><p id="par0035" class="elsevierStylePara elsevierViewall">Gastrointestinal symptoms that develop before the onset of pain suggest a different etiology such as gastroenteritis.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">5</span></a></p><p id="par0040" class="elsevierStylePara elsevierViewall">Symptoms in patients with abdominal pain that are suggestive of surgical or emergent conditions include fever, protracted vomiting, syncope or pre-syncope, and evidence of gastrointestinal blood loss.<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">4</span></a></p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Physical examination</span><p id="par0045" class="elsevierStylePara elsevierViewall">The vital signs and general appearance should be noted first in the physical examination.<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">4</span></a> In early presentation pulse rate and body temperature may be normal or slightly elevated. The peritoneal irritation will determine the presence of the next physical findings: tenderness at or near the McBurney's point, muscular resistance (guarding) may be felt on deep palpation, and sudden pain when the hand is quickly relieved (rebound). Indirect tenderness (Rovsing's sign) and indirect rebound tenderness (pain in the right lower quadrant when the left lower quadrant is palpated) are strong indicators of peritoneal irritation.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">5</span></a> Psoas sign and obturator sign indicates inflammation near the muscles.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">5</span></a> The positive and negative likehood ratios of the sings and symptoms were calculated in a meta-analysis (<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>).<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">7</span></a></p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0050" class="elsevierStylePara elsevierViewall">In the physical examination for evaluation of appendicitis, digital rectal examination (DRE) has been considered necessary, it has been described that when the appendix hangs into the pelvis, abdominal findings may be absent; right-sided rectal tenderness is said to help in this situation.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">5</span></a> For DRE a meta-analysis found a pooled sensitivity of 0.49 (95% CI 0.42–0.56), the pooled specificity was 0.61 (95% CI 0.53–0.67), the pooled Positive Likelihood Ratio (LR+) was 1.24 (95% CI 0.97–1.58), the pooled Negative Likelihood Ratio (LR−) was 0.85 (95% CI 0.70–1.02), and the diagnostic odds ratio (DOR) was 1.46 (0.95–2.26).<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">3</span></a> Considering sensitivity, specificity and the discomfort the DRE causes, Toshihiko T. et al. question the necessity of DRE in patients with suspected appendicitis.</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Laboratory tests</span><p id="par0055" class="elsevierStylePara elsevierViewall">When acute appendicitis is suspected after initial evaluation a white blood cell count (WBC) with differential and C-reactive protein (CRP) must be ordered. No inflammatory marker alone, such as white blood cell count, C-reactive protein, or other novel tests, including procalcitonin, can identify appendicitis with high specificity and sensitivity.<a class="elsevierStyleCrossRef" href="#bib0115"><span class="elsevierStyleSup">2</span></a></p><p id="par0060" class="elsevierStylePara elsevierViewall">Appendicitis was more likely in patients with a strong inflammatory response, high granulocyte counts or WBC, high proportion of PMN cells or increased CRP concentration.<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">7</span></a></p><p id="par0065" class="elsevierStylePara elsevierViewall">Appendicitis was likely when two or more descriptors of inflammation were increased, with a LR+ of more than 10; it was unlikely when all markers of inflammation were normal, with a LR− of less than 0.10 (<a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>).<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">7</span></a></p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Role of Alvarado score</span><p id="par0070" class="elsevierStylePara elsevierViewall">Alvarado A. developed a score in 1986 based in symptoms, signs and laboratory findings (<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>). The predicted number of patients with appendicitis is 30% in those with score 1–4 (low-risk), 66% with 5–6 (intermediate risk) and 93% in scores 7–10 (high risk). He proposed that patients with a score of 5–6 should be observed, and a score of 7 and more requires surgery.<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">8</span></a></p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><p id="par0075" class="elsevierStylePara elsevierViewall">An Alvarado score of 1–4 has a sensitivity of 99% in the overall population, 96% for men and 99% for women. However, a higher Alvarado scores (7–10), has limited clinical value since it has a specificity of 82% in overall population, 57% for men, 73% for women. In women the score over-predicts the probability of appendicitis and should be used with caution. As a sole decision criterion for surgery (cut point of 7) the score produces negative appendectomy rates from 13.3% to 16.2%.<a class="elsevierStyleCrossRef" href="#bib0150"><span class="elsevierStyleSup">9</span></a></p><p id="par0080" class="elsevierStylePara elsevierViewall">A discharge decision by ruling out acute appendicitis can be made if the patient has an Alvarado score of 1–4, but it is important to warn the patient for symptom changes that may require re-assessment. An intermediate-high risk Alvarado score (5–10) cannot be used to diagnose acute appendicitis since it has low specificity, in these patients the use of image studies should may be appropriate.</p><p id="par0085" class="elsevierStylePara elsevierViewall">By correlation between Alvarado score and diagnostic findings in computed tomography (CT) for acute appendicitis, a score of 3 or lower had an incidence of 3.7% of acute appendicitis (96% sensitivity), and those of a score 7 or higher had an incidence of 77.7% of acute appendicitis (100% specificity). Those with a score between 4 and 6 had specificity of 94%. McKay R. recommends CT on patients with an Alvarado score from 4 to 6, in patients with 7 or more, a surgical consultation is recommended before the CT. CT is not recommended in scores of 3 or less, since it may delay diagnosis and time in ED.<a class="elsevierStyleCrossRef" href="#bib0155"><span class="elsevierStyleSup">10</span></a></p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Imaging studies</span><p id="par0090" class="elsevierStylePara elsevierViewall">In adolescent and adult patients, computed tomography (CT) has become the most widely accepted imaging strategy.<a class="elsevierStyleCrossRef" href="#bib0115"><span class="elsevierStyleSup">2</span></a> Twelve studies were reviewed by Terasawa S. et al. in which CT and US were evaluated as diagnostic tools for acute appendicitis, finding that CT had pooled estimates of 0.94 (95% CI 0.91, 0.95) for sensitivity, 0.95 (95% CI: 0.93, 0.96) for specificity, 13.3 (95% CI: 9.9, 17.9) for the positive LR and 0.09 (95% CI: 0.07, 0.12) for the negative LR. Ultrasonography had pooled estimates of 0.86 (95% CI: 0.83, 0.88) for sensitivity, 0.81 (95% CI: 0.78, 0.84) for specificity, 5.8 (95% CI: 3.5, 9.5) for the positive LR and 0.19 (95% CI: 0.13, 0.27) for the negative LR, concluding a better diagnostic performance by CT.<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">11</span></a></p><p id="par0095" class="elsevierStylePara elsevierViewall">On 5-mm-section contrast-enhanced helical CT examinations, one enlarged appendix, appendicular wall thickening, peri-appendicular fat stranding, and appendicular wall enhancement were the most useful findings for diagnosing acute appendicitis.<a class="elsevierStyleCrossRef" href="#bib0165"><span class="elsevierStyleSup">12</span></a></p><p id="par0100" class="elsevierStylePara elsevierViewall">In cases of abdominal pain suspected to be appendicitis, imaging studies were more cost-effective than physical exam to make accurate diagnostic decisions. Tomography offers the best cost-effectiveness in prepaid system and in public health system.<a class="elsevierStyleCrossRef" href="#bib0170"><span class="elsevierStyleSup">13</span></a> The use of CT reduces the negative appendectomy rate to 6% compared with no CT approach.<a class="elsevierStyleCrossRefs" href="#bib0115"><span class="elsevierStyleSup">2,14–16</span></a> The use of CT in the absence of an expedited imaging protocol may delay surgery, but this is not associated with increased appendicular perforation rates.<a class="elsevierStyleCrossRef" href="#bib0190"><span class="elsevierStyleSup">17</span></a></p><p id="par0105" class="elsevierStylePara elsevierViewall">However, CT radiation is a common concern in children and young patients, reducing the radiation without affect the accuracy which can be achieved with a low-dose CT. Low-dose CT was non-inferior to standard-dose CT with respect to negative appendectomy rates in young adults with suspected appendicitis.<a class="elsevierStyleCrossRef" href="#bib0195"><span class="elsevierStyleSup">18</span></a></p></span></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Conclusions</span><p id="par0110" class="elsevierStylePara elsevierViewall">The diagnosis by clinical evaluation can still be challenging in cases where presentation is atypical and overlaps with other conditions, there is continuous effort in evaluating clinical, laboratory and image findings in order to make an accurate and early diagnosis. It is not recommended a diagnosis made merely by clinical evaluation since it may increase the normal appendectomy rate, also a routine CT is not recommended because unnecessary radiation exposure and increases costs in low risk situations; a systematic evaluation combining clinical evaluation, laboratory and imaging depending on Alvarado score is proposed in order to lower misdiagnosis and normal appendectomy rate. The recommend approach for us is shown in <a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>.</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Funding</span><p id="par0115" class="elsevierStylePara elsevierViewall">No financial support was provided.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:5 [ 0 => array:2 [ "identificador" => "sec0005" "titulo" => "Introduction" ] 1 => array:3 [ "identificador" => "sec0010" "titulo" => "Initial evaluation" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "sec0015" "titulo" => "History" ] 1 => array:2 [ "identificador" => "sec0020" "titulo" => "Physical examination" ] 2 => array:2 [ "identificador" => "sec0025" "titulo" => "Laboratory tests" ] 3 => array:2 [ "identificador" => "sec0030" "titulo" => "Role of Alvarado score" ] 4 => array:2 [ "identificador" => "sec0035" "titulo" => "Imaging studies" ] ] ] 2 => array:2 [ "identificador" => "sec0040" "titulo" => "Conclusions" ] 3 => array:2 [ "identificador" => "sec0045" "titulo" => "Funding" ] 4 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2016-04-26" "fechaAceptado" => "2016-04-26" "multimedia" => array:4 [ 0 => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 3496 "Ancho" => 2333 "Tamanyo" => 406297 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Approach in patients with suspected appendicitis.</p>" ] ] 1 => array:8 [ "identificador" => "tbl0005" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at1" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:2 [ "leyenda" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">LR, likelihood ratio.</p>" "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head " align="" valign="top" scope="col" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">LR+ \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col" style="border-bottom: 2px solid black"><span class="elsevierStyleItalic">p</span>* \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">LR− \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col" style="border-bottom: 2px solid black"><span class="elsevierStyleItalic">p</span>* \t\t\t\t\t\t\n \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleBold">Patient details and disease history</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Age</span><span class="elsevierStyleHsp" style=""></span>≥<span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">20</span> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.25 (1.10, 1.42) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.505 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.74 (0.62, 0.89) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.303 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Male sex</span> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1–62 (1–49, 1.76) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.62 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.62 (0.57, 0.68) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.34 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Duration (h)</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>>9 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1–01 (0.97, 1.05) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.94 (0.62, 1.42) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.634 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>>12 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.96 (0.90, 1.04) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.094 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.19 (0.87, 1.63) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.107 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>>24 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.65 (0.47, 0.90) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.002 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.47 (1.14, 1.90) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>>48 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.49 (0.36, 0.67) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.144 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.20 (1.08, 1.34) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.018 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">History of fever</span> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.64 (0.89, 3.01) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.008 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.61 (0.49, 0.77) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.089 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleBold">Symptoms</span></td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Gastrointestinal dysfunction</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Anorexia \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.27 (1.14, 1.41) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.927 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.59 (0.45, 0.77) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.321 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Nausea or vomiting \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.15 (1.04, 1.36) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.657 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.72 (0.57, 0.91) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.823 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Vomiting \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.63 (1.45, 1.84) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.455 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.75 (0.69, 0.80) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.687 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Pain</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Pain migration \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2.06 (1.63, 2.60) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.52 (0.40, 0.69) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Pain progression \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.39 (1.29, 1.50) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.097 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.46 (0.27, 0.77) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.043 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Peritonism</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Aggravation by cough \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.49 (1.40, 1.59) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.711 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.38 (0.32, 0.46) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.536 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Aggravation by movements \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.24 (1.16, 1.33) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.07 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.49 (0.39, 0.62) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.565 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleBold">Signs</span></td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Tenderness</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Direct tenderness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.29 (1.06, 1.57) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.25 (0.12, 0.53) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.006 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Indirect tenderness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2.47 (1.38, 4.43) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.71 (0.65, 0.77) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.082 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Location versus diffuse tenderness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.52 (1.21, 1.92) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.016 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.67 (0.61, 0.75) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.76 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Rectal tenderness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.03 (0.83, 1.27) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.043 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.96 (0.85, 1.08) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.037 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Psoas sign \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2.31 (1.36, 3.91) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.195 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.85 (0.76, 0.95) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.243 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="5" align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">Peritonism</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Rebound tenderness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1.99 (1.61, 2.45) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.39 (0.32, 0.48) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.004 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Percussion tenderness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2.86 (1.95, 4.21) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.244 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.49 (0.37, 0.63) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.82 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Guarding \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2.48 (1.60, 3.84) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.57 (0.48, 0.68) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.015 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Guarding or rigidity \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2.36 (1.76, 3.15) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.721 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.70 (0.61, 0.80) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.605 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleHsp" style=""></span>Rigidity \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2.96 (2.43, 3.59) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.22 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.86 (0.72, 1.02) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><0.001 \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab1182396.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">Predictive power of elements of history and clinical examination in the diagnosis of appendicitis, expressed as pooled likelihood ratios.<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">7</span></a></p>" ] ] 2 => array:8 [ "identificador" => "tbl0010" "etiqueta" => "Table 2" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at2" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head " align="" valign="top" scope="col"> \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col">Reference \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col">ROC area \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " colspan="2" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">Likelihood ratio</th></tr><tr title="table-row"><th class="td" title="table-head " align="" valign="top" scope="col" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="" valign="top" scope="col" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="" valign="top" scope="col" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">All variables absent \t\t\t\t\t\t\n \t\t\t\t</th><th class="td" title="table-head " align="left" valign="top" scope="col" style="border-bottom: 2px solid black">All variables present \t\t\t\t\t\t\n \t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Guarding or rebound and WBC count<span class="elsevierStyleHsp" style=""></span>≥<span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleSup">9</span>/l \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><a class="elsevierStyleCrossRef" href="#bib0200"><span class="elsevierStyleSup">19</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.84 (0.80, 0.88) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.14 (0.08, 0.24) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">11.34 (6.65, 19.56) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">WBC<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleSup">9</span>/l and CRP<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>8<span class="elsevierStyleHsp" style=""></span>mg/l \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><a class="elsevierStyleCrossRef" href="#bib0205"><span class="elsevierStyleSup">20</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.96 (0.92, 1.00) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.03 (0.00, 0.14) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">23.32 (6.87, 84.79) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">WBC<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleSup">9</span>/l and CRP<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>12<span class="elsevierStyleHsp" style=""></span>mg/l \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><a class="elsevierStyleCrossRef" href="#bib0210"><span class="elsevierStyleSup">21</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.85 (0.80, 0.90) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.05 (0.01, 0.18) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">8.22 (4.73, 14.38) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">WBC<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleHsp" style=""></span>×<span class="elsevierStyleHsp" style=""></span>10<span class="elsevierStyleSup">9</span>/l, proportion of PMN cells<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>70% and CRP<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>12<span class="elsevierStyleHsp" style=""></span>mg/l \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top"><a class="elsevierStyleCrossRef" href="#bib0210"><span class="elsevierStyleSup">21</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.79 (0.74, 0.84) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">0.03 (0.01, 0.16) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">20.85 (5.47, 80.27) \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab1182395.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Discriminatory and predictive power of combinations of variables.<a class="elsevierStyleCrossRef" href="#bib0140"><span class="elsevierStyleSup">7</span></a></p>" ] ] 3 => array:8 [ "identificador" => "tbl0015" "etiqueta" => "Table 3" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at3" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="table-head " colspan="2" align="center" valign="top" scope="col" style="border-bottom: 2px solid black">Elements</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Migration of pain \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Anorexia \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Nausea/Vomit \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Tenderness in RLQ \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Rebound tenderness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Elevated temperature/Fever \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Leukocytosis \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">2 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Shift to the left \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">1 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry " colspan="2" align="char" valign="top"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top">Total \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="table-entry " align="char" valign="top">10 \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab1182394.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Alvarado score.<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">8</span></a></p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:21 [ 0 => array:3 [ "identificador" => "bib0110" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Guideline for the diagnostic pathway in patients with acute abdominal pain" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:3 [ 0 => "S.L. Gans" 1 => "M.A. Pols" 2 => "J. Stoker" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1159/000371583" "Revista" => array:6 [ "tituloSerie" => "Dig Surg" "fecha" => "2015" "volumen" => "32" "paginaInicial" => "23" "paginaFinal" => "31" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/25659265" "web" => "Medline" ] ] ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib0115" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Acute appendicitis: modern understanding of pathogenesis, diagnosis, and management" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:3 [ 0 => "A. Bhangu" 1 => "K. Søreide" 2 => "S. Di Saverio" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1016/S0140-6736(15)00275-5" "Revista" => array:6 [ "tituloSerie" => "Lancet" "fecha" => "2015" "volumen" => "386" "paginaInicial" => "1278" "paginaFinal" => "1287" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/26460662" "web" => "Medline" ] ] ] ] ] ] ] ] 2 => array:3 [ "identificador" => "bib0120" "etiqueta" => "3" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "The role of digital rectal examination for diagnosis of acute appendicitis: a systematic review and meta-analysis" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:3 [ 0 => "T. Takada" 1 => "H. Nishiwaki" 2 => "Y. Yamamoto" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:5 [ "tituloSerie" => "PLOS ONE" "fecha" => "2015" "volumen" => "10" "paginaInicial" => "1" "paginaFinal" => "13" ] ] ] ] ] ] 3 => array:3 [ "identificador" => "bib0125" "etiqueta" => "4" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Evaluation of acute abdominal pain in adults" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:3 [ 0 => "Cartwright" 1 => "L. Sarah" 2 => "M.P. 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2024 November | 21 | 0 | 21 |
2024 October | 206 | 8 | 214 |
2024 September | 294 | 13 | 307 |
2024 August | 222 | 7 | 229 |
2024 July | 275 | 8 | 283 |
2024 June | 239 | 12 | 251 |
2024 May | 261 | 14 | 275 |
2024 April | 260 | 21 | 281 |
2024 March | 361 | 7 | 368 |
2024 February | 304 | 15 | 319 |
2024 January | 330 | 25 | 355 |
2023 December | 255 | 13 | 268 |
2023 November | 341 | 13 | 354 |
2023 October | 323 | 26 | 349 |
2023 September | 280 | 6 | 286 |
2023 August | 276 | 9 | 285 |
2023 July | 287 | 13 | 300 |
2023 June | 355 | 10 | 365 |
2023 May | 454 | 15 | 469 |
2023 April | 369 | 10 | 379 |
2023 March | 426 | 20 | 446 |
2023 February | 335 | 8 | 343 |
2023 January | 291 | 10 | 301 |
2022 December | 286 | 12 | 298 |
2022 November | 384 | 16 | 400 |
2022 October | 364 | 15 | 379 |
2022 September | 348 | 22 | 370 |
2022 August | 339 | 19 | 358 |
2022 July | 252 | 16 | 268 |
2022 June | 289 | 27 | 316 |
2022 May | 353 | 19 | 372 |
2022 April | 385 | 12 | 397 |
2022 March | 539 | 15 | 554 |
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2021 December | 231 | 19 | 250 |
2021 November | 364 | 22 | 386 |
2021 October | 370 | 17 | 387 |
2021 September | 264 | 26 | 290 |
2021 August | 357 | 16 | 373 |
2021 July | 303 | 16 | 319 |
2021 June | 393 | 16 | 409 |
2021 May | 555 | 25 | 580 |
2021 April | 923 | 14 | 937 |
2021 March | 865 | 46 | 911 |
2021 February | 433 | 18 | 451 |
2021 January | 517 | 42 | 559 |
2020 December | 505 | 37 | 542 |
2020 November | 483 | 34 | 517 |
2020 October | 365 | 23 | 388 |
2020 September | 243 | 20 | 263 |
2020 August | 300 | 11 | 311 |
2020 July | 266 | 22 | 288 |
2020 June | 270 | 25 | 295 |
2020 May | 275 | 21 | 296 |
2020 April | 320 | 33 | 353 |
2020 March | 327 | 16 | 343 |
2020 February | 267 | 19 | 286 |
2020 January | 244 | 5 | 249 |
2019 December | 127 | 16 | 143 |
2019 November | 135 | 9 | 144 |
2019 October | 103 | 11 | 114 |
2019 September | 82 | 9 | 91 |
2019 August | 59 | 4 | 63 |
2019 July | 35 | 10 | 45 |
2019 June | 47 | 5 | 52 |
2019 May | 70 | 9 | 79 |
2019 April | 79 | 12 | 91 |
2019 March | 15 | 4 | 19 |
2019 February | 22 | 2 | 24 |
2019 January | 12 | 3 | 15 |
2018 December | 18 | 8 | 26 |
2018 November | 36 | 0 | 36 |
2018 October | 31 | 9 | 40 |
2018 September | 40 | 2 | 42 |
2018 August | 36 | 1 | 37 |
2018 July | 48 | 2 | 50 |
2018 June | 50 | 0 | 50 |
2018 May | 65 | 4 | 69 |
2018 April | 29 | 0 | 29 |
2018 March | 32 | 0 | 32 |
2018 February | 10 | 0 | 10 |
2018 January | 9 | 0 | 9 |
2017 December | 17 | 0 | 17 |
2017 November | 10 | 0 | 10 |
2017 October | 19 | 1 | 20 |
2017 September | 8 | 1 | 9 |
2017 August | 21 | 8 | 29 |
2017 July | 18 | 3 | 21 |
2017 June | 24 | 1 | 25 |
2017 May | 36 | 4 | 40 |
2017 April | 21 | 1 | 22 |
2017 March | 24 | 44 | 68 |
2017 February | 24 | 10 | 34 |
2017 January | 17 | 1 | 18 |
2016 December | 37 | 6 | 43 |
2016 November | 30 | 8 | 38 |
2016 October | 39 | 9 | 48 |
2016 September | 44 | 6 | 50 |
2016 August | 24 | 6 | 30 |
2016 July | 0 | 7 | 7 |