Saowanee Ngamruengphong1, Haruhiro Inoue2, Michael B Ujiki3, Lava Y Patel3, Amol Bapaye4, Pankaj N Desai5, Shivangi Dorwat4, Jun Nakamura2, Yoshitaka Hata2, Valerio Balassone2, Manabu Onimaru2, Thierry Ponchon6, Mathieu Pioche6, Sabine Roman7, Jérôme Rivory6, François Mion7, Aurélien Garros7, Peter V Draganov8, Yaseen Perbtani8, Ali Abbas8, Davinderbir Pannu8, Dennis Yang8, Silvana Perretta9, John Romanelli10, David Desilets11, Bu Hayee12, Amyn Haji12, Gulara Hajiyeva1, Amr Ismail1, Yen-I Chen1, Majidah Bukhari1, Yamile Haito-Chavez1, Vivek Kumbhari1, Payal Saxena13, Michael Talbot14, Philip Wai-Yan Chiu15, Hon-Chi Yip15, Vivien Wai-Yin Wong15, Ruben Hernaez16, Roberta Maselli17, Alessandro Repici17, Mouen A Khashab18. 1. Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, Maryland. 2. Digestive Diseases Center, Showa University Koto-Toyosu Hospital, Tokyo, Japan. 3. Department of Surgery, NorthShore University HealthSystem, Evanston, Illinois. 4. Shivanand Desai Center for Digestive Disorders, Deenanath Mangeshkar Hospital and Research Center, Pune, India. 5. Surat Institute of Digestive Sciences, Surat, India. 6. Gastroenterology and Endoscopy Unit, Digestive Disease Department, L Pavillon-Edouard Herriot Hospital, Lyon, France. 7. Université de Lyon and Hospices Civils de Lyon, Digestive Physiology, E Herriot Hospital, Lyon, France; INSERM U1032, Lyon, France. 8. Division of Gastroenterology and Hepatology and Nutrition, University of Florida College of Medicine, Gainesville, Florida. 9. Department of Gastrointestinal and Endocrine Surgery, University of Strasbourg, Strasbourg, France. 10. Department of Surgery, Baystate Medical Center, Tufts University School of Medicine, Springfield, Massachusetts. 11. Division of Gastroenterology, Department of Medicine, Baystate Medical Center, Tufts University School of Medicine, Springfield, Massachusetts. 12. Department of Gastroenterology, King's College Hospital NHS Foundation Trust, London, United Kingdom. 13. Department of Gastroenterology, Royal Prince Alfred Hospital, Camperdown, Australia. 14. University of New South Wales, Sydney, New South Wales, Australia. 15. Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong. 16. Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas. 17. Digestive Endoscopy Unit, Humanitas Research Hospital, Milan, Italy Digestive Endoscopy Unit, Humanitas Unversity, Milan, Italy. 18. Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, Maryland. Electronic address: mkhasha1@jhmi.edu.
Abstract
BACKGROUND & AIMS: In patients with persistent symptoms after Heller myotomy (HM), treatment options include repeat HM, pneumatic dilation, or peroral endoscopic myotomy (POEM). We evaluated the efficacy and safety of POEM in patients with achalasia with prior HM vs without prior HM. METHODS: We conducted a retrospective cohort study of 180 patients with achalasia who underwent POEM at 13 tertiary centers worldwide, from December 2009 through September 2015. Patients were divided into 2 groups: those with prior HM (HM group, exposure; n = 90) and those without prior HM (non-HM group; n = 90). Clinical response was defined by a decrease in Eckardt scores to 3 or less. Adverse events were graded according to criteria set by the American Society for Gastrointestinal Endoscopy. Technical success, clinical success, and rates of adverse events were compared between groups. Patients were followed up for a median of 8.5 months. RESULTS: POEM was technically successful in 98% of patients in the HM group and in 100% of patients in the non-HM group (P = .49). A significantly lower proportion of patients in the HM group had a clinical response to POEM (81%) than in the non-HM group (94%; P = .01). There were no significant differences in rates of adverse events between the groups (8% in the HM group vs 13% in the non-HM group; P = .23). Symptomatic reflux and reflux esophagitis after POEM were comparable between groups. CONCLUSIONS: POEM is safe and effective for patients with achalasia who were not treated successfully by prior HM. Although the rate of clinical success in patients with prior HM is lower than in those without prior HM, the safety profile of POEM is comparable between groups.
BACKGROUND & AIMS: In patients with persistent symptoms after Heller myotomy (HM), treatment options include repeat HM, pneumatic dilation, or peroral endoscopic myotomy (POEM). We evaluated the efficacy and safety of POEM in patients with achalasia with prior HM vs without prior HM. METHODS: We conducted a retrospective cohort study of 180 patients with achalasia who underwent POEM at 13 tertiary centers worldwide, from December 2009 through September 2015. Patients were divided into 2 groups: those with prior HM (HM group, exposure; n = 90) and those without prior HM (non-HM group; n = 90). Clinical response was defined by a decrease in Eckardt scores to 3 or less. Adverse events were graded according to criteria set by the American Society for Gastrointestinal Endoscopy. Technical success, clinical success, and rates of adverse events were compared between groups. Patients were followed up for a median of 8.5 months. RESULTS: POEM was technically successful in 98% of patients in the HM group and in 100% of patients in the non-HM group (P = .49). A significantly lower proportion of patients in the HM group had a clinical response to POEM (81%) than in the non-HM group (94%; P = .01). There were no significant differences in rates of adverse events between the groups (8% in the HM group vs 13% in the non-HM group; P = .23). Symptomatic reflux and reflux esophagitis after POEM were comparable between groups. CONCLUSIONS: POEM is safe and effective for patients with achalasia who were not treated successfully by prior HM. Although the rate of clinical success in patients with prior HM is lower than in those without prior HM, the safety profile of POEM is comparable between groups.
Authors: Christopher G Yheulon; Paul B Brock; Fadi M Balla; Jamil L Stetler; Edward Lin Journal: J Gastrointest Surg Date: 2018-06-25 Impact factor: 3.452