Scientific letter
Transversus abdominis plane block in acute pancreatitis pain management
Bloqueo del plano del músculo transverso del abdomen en el tratamiento del dolor en la pancreatitis aguda
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"descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Pain level at baseline and after application of TAP block.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Acute pancreatitis is an inflammatory condition often accompanied by severe abdominal pain. Achieving an adequate level of analgesia is a challenge which can remain unresolved in some patients. Initial treatment includes non-opioid analgesics, to which opioids are added if adequate pain relief is not achieved.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">A surprising article has reported the utility of transversus abdominis plane (TAP) block in the control of pain in two patients with chronic pancreatitis.<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">However, there is no evidence to date on the application of TAP block in the treatment of acute pancreatitis pain.</p><p id="par0020" class="elsevierStylePara elsevierViewall">We set out to evaluate the effect of TAP block in the analgesic management of patients with acute pancreatitis.</p><p id="par0025" class="elsevierStylePara elsevierViewall">To do this, we conducted a case series study with patients with mild-to-moderate acute pancreatitis according to the Atlanta criteria.<a class="elsevierStyleCrossRef" href="#bib0015"><span class="elsevierStyleSup">3</span></a></p><p id="par0030" class="elsevierStylePara elsevierViewall">Patients were selected for the study according to their level of pain, determined by visual analogue scale (VAS) with a range of 0–10.</p><p id="par0035" class="elsevierStylePara elsevierViewall">We included patients whose pain was not under control (VAS<span class="elsevierStyleHsp" style=""></span>≥<span class="elsevierStyleHsp" style=""></span>5) two hours after receiving conventional analgesia with paracetamol (1<span class="elsevierStyleHsp" style=""></span>g every 8<span class="elsevierStyleHsp" style=""></span>h, intravenously) combined with metamizole (2<span class="elsevierStyleHsp" style=""></span>g every 8<span class="elsevierStyleHsp" style=""></span>h, intravenously). With these analgesics, it takes 30–120<span class="elsevierStyleHsp" style=""></span>min to reach the blood concentration that produces the highest level of analgesia, so no improvement in the pain would be expected after that time. In view of the need to provide a higher level of analgesia, a TAP block was performed.</p><p id="par0040" class="elsevierStylePara elsevierViewall">All the patients therefore had the block after two hours of the initial intravenous analgesic treatment. Their level of pain was determined before the procedure, within half an hour after, and once a day until discharge from the hospital.</p><p id="par0045" class="elsevierStylePara elsevierViewall">The patients signed a specific informed consent form before being included.</p><p id="par0050" class="elsevierStylePara elsevierViewall">The TAP block technique is explained below. With standard monitoring, patients were placed in the supine position. After ensuring asepsis with chlorhexidine, a linear high-frequency transducer (12−15<span class="elsevierStyleHsp" style=""></span>MHz) was placed on one side of the abdominal wall, in the midaxillary line between the costal margin and the iliac crest. We identified the structures from the superficial to the deep external oblique muscle, the internal oblique muscle and the transversus abdominis muscle. We then moved the transducer more laterally to find the point where the transversus abdominis muscle tails off to the end (posterior TAP block) and administered 10<span class="elsevierStyleHsp" style=""></span>mL of 2% mepivacaine plus 10<span class="elsevierStyleHsp" style=""></span>mL of 0.5% bupivacaine between the fascia of the internal oblique and the transversus abdominis muscle. This procedure was performed bilaterally to achieve complete abdominal wall analgesia. We chose the posterior approach in order to block the maximum number of dermatomes.<a class="elsevierStyleCrossRef" href="#bib0020"><span class="elsevierStyleSup">4</span></a></p><p id="par0055" class="elsevierStylePara elsevierViewall">The VAS levels before and after the TAP block are expressed as median. In the absence of a control group, which would have been treated with intravenous morphine, we decided to compare the analgesic efficacy of TAP with the standard effectiveness of intravenous morphine chloride, which is very well defined in the literature.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a></p><p id="par0060" class="elsevierStylePara elsevierViewall">Ten consecutive patients with mild-to-moderate acute pancreatitis were included.</p><p id="par0065" class="elsevierStylePara elsevierViewall">After the TAP block, all patients had a marked decrease in pain levels. The mean VAS score before the TAP block was 7.33 (SD 1.67), then after the procedure, 1.25 (SD 1.66), 1.91 (SD 1.97), 1.18 (SD 1.17) and 0.91 (SD 1.30) at 30<span class="elsevierStyleHsp" style=""></span>min, 24<span class="elsevierStyleHsp" style=""></span>h, 48<span class="elsevierStyleHsp" style=""></span>h and 72<span class="elsevierStyleHsp" style=""></span>h respectively. Pain relief was significant in all cases and occurred almost immediately (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>). After the block, the patients only needed the conventional analgesia previously prescribed to control their pain, with VAS levels maintained at <3.</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0070" class="elsevierStylePara elsevierViewall">In seven of the ten patients, the VAS score at 72<span class="elsevierStyleHsp" style=""></span>h was 0. There were no procedure-related complications. The mean hospital stay was 6.9 days (SD 3.67) and a good clinical outcome was obtained in all cases; the patients were discharged without incident.</p><p id="par0075" class="elsevierStylePara elsevierViewall">In recent years, the analgesic efficacy of TAP block has been demonstrated in somatic pain generated in the abdominal wall after different abdominal surgery procedures.</p><p id="par0080" class="elsevierStylePara elsevierViewall">Acute pancreatitis pain has traditionally been classified as visceral in nature. However, we observed the effectiveness of the TAP block in controlling this type of pain in our study. The technique was found to be easily reproducible and safe.</p><p id="par0085" class="elsevierStylePara elsevierViewall">We would like to highlight the almost immediate effect of the analgesia obtained by the TAP block, a differentiating element with respect to any type of therapy with intravenous drugs. The analgesic effect is achieved by the local application of the anaesthetic to the nerve root, which explains its speed. In contrast, in patients treated with intravenous morphine derivatives, the maximum effect is generally achieved after 15−20<span class="elsevierStyleHsp" style=""></span>min and their effect wanes after 2−3<span class="elsevierStyleHsp" style=""></span>h, meaning that successive doses have to be administered to maintain optimal levels of analgesia.<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a></p><p id="par0090" class="elsevierStylePara elsevierViewall">As regards the persistence we observed in our patients of low levels of pain, we should probably attribute this to the natural improvement in the acute pancreatitis inflammatory process rather than to the TAP block itself.</p><p id="par0095" class="elsevierStylePara elsevierViewall">This study presents a short case series, with the consequent inherent limitations when assessing the conclusions. Nevertheless, we decided to communicate our results because of the striking nature of the data we obtained. Multicentre randomised studies need to be conducted comparing standard analgesic therapies with TAP block so it can be included as a new therapeutic tool in the treatment of pain in acute pancreatitis.</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Funding</span><p id="par0100" class="elsevierStylePara elsevierViewall">The authors have no sources of funding to declare.</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Conflicts of interest</span><p id="par0105" class="elsevierStylePara elsevierViewall">None.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:3 [ 0 => array:2 [ "identificador" => "sec0005" "titulo" => "Funding" ] 1 => array:2 [ "identificador" => "sec0010" "titulo" => "Conflicts of interest" ] 2 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as: González Martínez S, Gómez Facundo H, Deiros García C, Pueyo Periz EM, Ribas Montoliu R, Coronado Llanos D, et al. Bloqueo del plano del músculo transverso del abdomen en el tratamiento del dolor en la pancreatitis aguda. Gastroenterol Hepatol. 2021;44:125–126.</p>" ] ] "multimedia" => array:1 [ 0 => array:8 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 974 "Ancho" => 1522 "Tamanyo" => 102316 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0005" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Pain level at baseline and after application of TAP block.</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:5 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Is the WHO analgesic ladder still valid? 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"fecha" => "2013" "volumen" => "62" "paginaInicial" => "102" "paginaFinal" => "111" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/23100216" "web" => "Medline" ] ] "itemHostRev" => array:3 [ "pii" => "S0140673618327764" "estado" => "S300" "issn" => "01406736" ] ] ] ] ] ] ] 3 => array:3 [ "identificador" => "bib0020" "etiqueta" => "4" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Transversus abdominis plane block: an updated review of anatomy and techniques" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "H.C. Tsai" 1 => "T. Yoshida" 2 => "T.Y. Chuan" 3 => "S.F. Yang" 4 => "C.C. Chang" 5 => "H.Y. Yao" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1155/2017/8284363" "Revista" => array:4 [ "tituloSerie" => "Biomed Res Int." "fecha" => "2017" "paginaInicial" => "1" "paginaFinal" => "12" ] ] ] ] ] ] 4 => array:3 [ "identificador" => "bib0025" "etiqueta" => "5" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Dolor agudo, analgesia y sedación en el niño (IIIa): Farmacocinética y farmacodinamia de los analgésicos opioides" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:1 [ 0 => "A. Valdivielso" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:6 [ "tituloSerie" => "An Esp Pediatr." 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| Year/Month | Html | Total | |
|---|---|---|---|
| 2024 October | 24 | 6 | 30 |
| 2024 September | 51 | 13 | 64 |
| 2024 August | 29 | 5 | 34 |
| 2024 July | 23 | 4 | 27 |
| 2024 June | 29 | 5 | 34 |
| 2024 May | 25 | 9 | 34 |
| 2024 April | 23 | 7 | 30 |
| 2024 March | 40 | 5 | 45 |
| 2024 February | 29 | 2 | 31 |
| 2024 January | 55 | 12 | 67 |
| 2023 December | 47 | 2 | 49 |
| 2023 November | 34 | 3 | 37 |
| 2023 October | 47 | 6 | 53 |
| 2023 September | 29 | 2 | 31 |
| 2023 August | 16 | 2 | 18 |
| 2023 July | 13 | 1 | 14 |
| 2023 June | 17 | 2 | 19 |
| 2023 May | 33 | 2 | 35 |
| 2023 April | 32 | 3 | 35 |
| 2023 March | 24 | 3 | 27 |
| 2023 February | 13 | 3 | 16 |
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