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      PERORAL (POEM) OR SURGICAL MYOTOMY FOR THE TREATMENT OF ACHALASIA: A SYSTEMATIC REVIEW AND META-ANALYSIS Translated title: Miotomia peroral (POEM) ou cirúrgica para o tratamento da acalasia: revisão sistemática e metanálise

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          Abstract

          ABSTRACT BACKGROUND: Achalasia is a neurodegenerative motility esophageal disorder characterized by failure of lower esophageal sphincter relaxation. The conventional treatment option for achalasia has been laparoscopic Heller myotomy (LHM). However, in 2010, Inoue et al. described peroral endoscopic myotomy (POEM), a minimally invasive procedure, as an alternative therapy. To date, some studies with small sample sizes have aimed to compare outcomes of LHM vs POEM. OBJECTIVE: Thus, the aim of this study is to perform a systematic review and meta-analysis to better evaluate the efficacy and safety of these two techniques. METHODS: Individualized search strategies were developed from inception through April 2019 in accordance with PRISMA guidelines. Variables analyzed included operative time, overall adverse events rate, post-procedure gastroesophageal reflux disease (GERD), hospitalization length, post-procedure pain score, and Eckardt Score reduction. RESULTS: Twelve cohort trials were selected, consisting of 893 patients (359 in POEM group and 534 in LHM.) No randomized clinical trials were available. There was no difference in operative time (MD= -10,26, 95% CI (-5,6 to 8,2), P<0.001) or Post-Operative Gastroesophageal Reflux (RD: -0.00, 95%CI: (-0.09, 0.09), I2: 0%). There was decreased length of hospital stay for POEM (MD: -0.6, 95% CI (-1.11, -0.09), P=0.02), and an increased mean reduction in Eckardt score in POEM patients (MD = -0.257, 95% CI: (-0.512 to -0.002), P=0.048), with similar rates of adverse events. CONCLUSION: POEM demonstrated similar results compared to laparoscopic Heller myotomy with regards to improvement of dysphagia, post-procedure reflux, and surgical time, with the benefit of shorter length of hospital stay. Therefore, POEM can be considered an option for patients with achalasia.

          Translated abstract

          RESUMO CONTEXTO: A acalasia é um distúrbio esofágico da motilidade neurodegenerativa caracterizado por falha no relaxamento do esfíncter esofágico inferior (EEI). A opção de tratamento convencional para acalasia tem sido a miotomia laparoscópica de Heller (LHM). No entanto, em 2010, Inoue et al. descreveram a miotomia endoscópica peroral (POEM), um procedimento minimamente invasivo, como uma terapia alternativa. Até o momento, poucos estudos com amostras pequenas tiveram como objetivo comparar os resultados do LHM versus POEM. OBJETIVO: Assim, o objetivo deste estudo é realizar uma revisão sistemática e metanálise para melhor avaliar a eficácia e segurança dessas duas técnicas. MÉTODOS: Estratégias de busca individualizadas foram desenvolvidas desde o início até abril de 2019, de acordo com as diretrizes do PRISMA. As variáveis analisadas incluíram tempo operatório, taxa global de eventos adversos, doença de refluxo gastroesofágico (DRGE) pós-procedimento, tempo de internação, escore de dor pós-procedimento e redução do escore de Eckardt. RESULTADOS: Doze estudos de coorte foram selecionados, consistindo em 893 pacientes (359 no grupo POEM e 524 no LHM). Nenhum ensaio clínico randomizado estava disponível. Não houve diferença no tempo operatório (MD = -10,26, IC 95% (-5,6 a 8,2), P<0,001) ou refluxo gastroesofágico pós-operatório (RD: -0,00, 95% IC: (-0,09, 0,09), I2: 0%). Houve diminuição do tempo de permanência hospitalar para POEM (MD: -0,6, 95% CI (-1,11, -0,09), P=0,02) e um aumento da redução média no escore de Eckardt em pacientes POEM (MD= -0,257, IC95%: (-0,512 a -0,002), P=0,048), com taxas similares de eventos adversos. CONCLUSÃO: O POEM demonstrou resultados semelhantes aos da miotomia a Heller por videolaparoscopia, com melhora da disfagia, do refluxo pós-procedimento e tempo cirúrgico, com o benefício de menor tempo de internação hospitalar. Portanto, o POEM pode ser considerado uma opção para pacientes com acalasia.

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          Botulinum toxin: State of the art.

          Botulinun neurotoxin (BoNT) has emerged as one of the most multipurpose therapeutic agents in modern medicine with more clinical applications than any other drug currently on the market. Initially developed in the treatment of strabismus and neurologic movement disorders, the use of botulinun neurotoxin has been expanding during the past 3 decades to include the treatment of a variety of ophthalmologic, gastrointestinal, urologic, orthopedic, dermatologic, dental, secretory, painful, cosmetic, and other conditions. In addition to onabotulinumtoxinA (Botox), abobotulinumtoxinA (Dysport), incobotulinumtoxinA (Xeomin), and RimabotulinumtoxinB (Myobloc or NeuroBloc) there are other novel botulinun neurotoxin products currently in development. With a better understanding of the cellular mechanisms of botulinun neurotoxin and advances in biotechnology, future botulinun neurotoxin products will likely be even more effective and customized to the specific indication and tailored to the needs of the patients. © 2017 International Parkinson and Movement Disorder Society.
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            Comprehensive Analysis of Adverse Events Associated With Per Oral Endoscopic Myotomy in 1826 Patients: An International Multicenter Study.

            The safety of peroral endoscopic myotomy (POEM) is still debated since comprehensive analysis of adverse events (AEs) associated with the procedure in large multicenter cohort studies has not been performed. To study (1) the prevalence of AEs and (2) factors associated with occurrence of AEs in patients undergoing POEM.
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              Peroral endoscopic myotomy: A short-term comparison with the standard laparoscopic approach.

              We report our short-term experience with peroral endoscopic myotomy (POEM) and compare perioperative outcomes with laparoscopic Heller myotomy (LHM) for achalasia. Patients from an institutional review board-approved protocol underwent POEM and were followed prospectively. Comparisons were made, in a prospective esophageal database, with patients who underwent LHM over the same period. We studied 18 patients who underwent POEM and compared them to 21 who underwent LHM. Demographics, preoperative Eckardt scores, motility data, and prior intervention history were comparable. Operative time, myotomy length, and complication rates (1 perforation in each group) were equal. Postoperative pain was significantly different by visual analogue score (POEM 3.9 ± 0.6 versus LHM 5.7 ± 0.4, P = .02) and analgesic use (POEM 26.0 ± 13.7 versus LHM 90.0 ± 48.5 mg morphine, P = .02). Return to activities of daily living was significantly faster in the POEM group (2.2 ± 0.6 vs 6.4 ± 1.0 days, P = .03). Postoperative dysphagia and Eckardt scores were equally successful in both groups. POEM results in similar relief of dysphagia with less postoperative pain and quicker return to normal activities. Copyright © 2013 Mosby, Inc. All rights reserved.
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                Author and article information

                Journal
                ag
                Arquivos de Gastroenterologia
                Arq. Gastroenterol.
                Instituto Brasileiro de Estudos e Pesquisas de Gastroenterologia e Outras Especialidades - IBEPEGE. (São Paulo, SP, Brazil )
                0004-2803
                1678-4219
                February 2020
                : 57
                : 1
                : 79-86
                Affiliations
                [2] MA orgnameHarvard Medical School orgdiv1Brigham and Women’s Hospital orgdiv2Division of Gastroenterology, Hepatology and Endoscopy USA
                [1] São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Faculdade de Medicina orgdiv2Hospital das Clínicas Brazil
                Article
                S0004-28032020000100079 S0004-2803(20)05700100079
                10.1590/s0004-2803.202000000-14
                32294740
                ce813d0d-698a-4fb3-af83-0da8883ce9d6

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 02 August 2019
                : 24 October 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 44, Pages: 8
                Product

                SciELO Brazil

                Self URI: Full text available only in PDF format (EN)
                Categories
                Review

                Acalásia esofágica,Miotomia,Endoscopia,Miotomia de Heller,Refluxo gastroesofágico,Esophageal acalasia,Myotomy,Endoscopy,Heller myotomy,Gastroesophageal reflux

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