READERS OPINION
Increased red cell distribution width in patients with slow coronary flow
Sevket Balta
, Ugur Kucuk, Zekeriya Arslan, Murat Unlu, Sait Demirkol, Turgay Celik
Corresponding author
Guilhane School of Medicine, Department of Cardiology, Tevfik Saglam St., Etlik-Ankara, Turkey
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"total" => 0 ] "en" => array:9 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">READERS OPINION</span>" "titulo" => "Authors' comments on: Higher red cell distribution width in patients with slow coronary flow" "tienePdf" => "en" "tieneTextoCompleto" => "en" "paginas" => array:1 [ 0 => array:1 [ "paginaInicial" => "1289" ] ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Song-Hui Luo, Jian-Jun Li" "autores" => array:2 [ 0 => array:2 [ "nombre" => "Song-Hui" "apellidos" => "Luo" ] 1 => array:2 [ "nombre" => "Jian-Jun" "apellidos" => "Li" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S1807593222016349?idApp=UINPBA00004N" "url" => "/18075932/0000006800000009/v1_202212010704/S1807593222016349/v1_202212010704/en/main.assets" ] "itemAnterior" => array:19 [ "pii" => "S1807593222016325" "issn" => 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array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig1" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 754 "Ancho" => 766 "Tamanyo" => 65686 ] ] "descripcion" => array:1 [ "en" => "<p id="spara10" class="elsevierStyleSimplePara elsevierViewall">Flowchart of the search to scan for studies investigating psychometric properties of the Beck Depression Inventory-II among medical patients.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Yuan-Pang Wang, Clarice Gorenstein" "autores" => array:2 [ 0 => array:2 [ "nombre" => "Yuan-Pang" "apellidos" => "Wang" ] 1 => array:2 [ "nombre" => "Clarice" "apellidos" => "Gorenstein" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S1807593222016325?idApp=UINPBA00004N" "url" => "/18075932/0000006800000009/v1_202212010704/S1807593222016325/v1_202212010704/en/main.assets" ] "en" => array:11 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">READERS OPINION</span>" "titulo" => "Increased red cell distribution width in patients with slow coronary flow" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:1 [ "paginaInicial" => "1288" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "Sevket Balta, Ugur Kucuk, Zekeriya Arslan, Murat Unlu, Sait Demirkol, Turgay Celik" "autores" => array:6 [ 0 => array:4 [ "nombre" => "Sevket" "apellidos" => "Balta" "email" => array:1 [ 0 => "drsevketb@gmail.com" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "*" "identificador" => "cor1" ] ] ] 1 => array:2 [ "nombre" => "Ugur" "apellidos" => "Kucuk" ] 2 => array:2 [ "nombre" => "Zekeriya" "apellidos" => "Arslan" ] 3 => array:2 [ "nombre" => "Murat" "apellidos" => "Unlu" ] 4 => array:2 [ "nombre" => "Sait" "apellidos" => "Demirkol" ] 5 => array:2 [ "nombre" => "Turgay" "apellidos" => "Celik" ] ] "afiliaciones" => array:1 [ 0 => array:2 [ "entidad" => "Guilhane School of Medicine, Department of Cardiology, Tevfik Saglam St., Etlik-Ankara, Turkey" "identificador" => "aff1" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor1" "etiqueta" => "*" "correspondencia" => "Tel.: 90-312-3044281" ] ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="para10" class="elsevierStylePara elsevierViewall">Dear Editor,</p><p id="para20" class="elsevierStylePara elsevierViewall">We read the article “Increased red cell distribution width (RDW) in patients with slow coronary flow (SCF) syndrome” by Luo et al. (<a class="elsevierStyleCrossRef" href="#bib1">1</a>). In this study, the authors examined the relationship between RDW and SCF syndrome. The authors concluded that RDW levels are strongly positively correlated with both C-reactive protein and thrombosis in the myocardial infarction frame counts of patients with SCF syndrome. The authors provided important information on this clinically relevant condition. The ready availability of testing for RDW at no additional cost could encourage its broader use in clinical practice. We would like to thank the authors for their contribution.</p><p id="para30" class="elsevierStylePara elsevierViewall">A complete blood count is a routine, easy and inexpensive examination technique that provides information regarding a patient's blood contents, which includes the red and white cells and platelets as well as the counts and dimensions of subgroups of parameters (<a class="elsevierStyleCrossRef" href="#bib2">2</a>–<a class="elsevierStyleCrossRef" href="#bib4">4</a>). RDW is a measurement of the variability in the size of circulating red blood cells and is a part of the complete blood count panel. Recently, a number of studies have reported that elevated RDW levels are associated with poor prognosis in the setting of coronary artery disease, coronary bypass surgery, heart failure, stroke, peripheral arterial disease and older age (<a class="elsevierStyleCrossRef" href="#bib5">5</a>). However, RDW can also be influenced by ethnicity, neurohumoral activation, renal dysfunction, thyroid disease, hepatic dysfunction, nutritional deficiencies (i.e., iron, vitamin B<span class="elsevierStyleInf">12</span> and folic acid), bone marrow dysfunction, inflammatory diseases and chronic or acute systemic inflammation (<a class="elsevierStyleCrossRef" href="#bib6">6</a>).</p><p id="para40" class="elsevierStylePara elsevierViewall">In addition to RDW, the mean platelet volume, neutrophil lymphocyte ratio and CRP and uric acid levels are easy methods to evaluate in a patient with cardiovascular disease (<a class="elsevierStyleCrossRef" href="#bib7">7</a>). These markers may be useful in clinical practice (<a class="elsevierStyleCrossRef" href="#bib8">8</a>). Finally, it would be useful if the authors defined the timing of the RDW measurements because a delay in blood sampling can cause abnormal results in RDW measurements (<a class="elsevierStyleCrossRef" href="#bib9">9</a>).</p><p id="para50" class="elsevierStylePara elsevierViewall">In conclusion, we do not believe that the findings obtained in the current study will lead to further studies examining the relationship between RDW and SCF. It is important to note that, in the absence of other inflammatory indicators, RDW alone does not provide an adequate representation of a patient's inflammatory status or disease prognosis (<a class="elsevierStyleCrossRef" href="#bib10">10</a>). Therefore, we believe that the RDW level should be evaluated along with other serum inflammatory markers.</p></span>" "pdfFichero" => "main.pdf" "tienePdf" => true "NotaPie" => array:1 [ 0 => array:1 [ "nota" => "<p class="elsevierStyleNotepara" id="cenpara10">No potential conflict of interest was reported.</p>" ] ] "bibliografia" => array:2 [ "titulo" => "REFERENCES" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "cebibsec10" "bibliografiaReferencia" => array:10 [ 0 => array:3 [ "identificador" => "bib1" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Increased red cell distribution width in patients with slow coronary flow syndrome" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => """ S-H Luo \n \t\t\t\t\t\t\t\t """ 1 => """ Y-J Jia \n \t\t\t\t\t\t\t\t """ 2 => """ S-P Nie \n \t\t\t\t\t\t\t\t """ 3 => """ P Qing \n \t\t\t\t\t\t\t\t """ 4 => """ Y-L Guo \n \t\t\t\t\t\t\t\t """ 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