Effects of laparoscopic myotomy on the esophageal motility pattern of esophageal achalasia as measured by high-resolution manometry

Renato Salvador, Edoardo Savarino, Elisa Pesenti, Lorenzo Spadotto, Guerrino Voltarel, Giovanni Capovilla, Francesco Cavallin, Loredana Nicoletti, Michele Valmasoni, Alberto Ruol, Stefano Merigliano, Mario Costantini

Research output: Contribution to journalArticlepeer-review


Background: Esophageal achalasia can be classified on the grounds of three distinct manometric patterns that correlate well with final outcome after laparoscopic Heller-Dor myotomy (LHM). No analytical data are available, however, on the postoperative picture and its possible correlation with final outcome. The aims of this study were: (a) to investigate whether manometric patterns change after LHM for achalasia; (b) to ascertain whether postoperative patterns and/or changes can predict final outcome; and (c) to test the hypothesis that the three known patterns represent different stages in the evolution of the disease. Methods: During the study period, we prospectively enlisted 206 consecutive achalasia patients who were assessed using high-resolution manometry (HRM) before undergoing LHM. Symptoms were scored using a detailed questionnaire. Barium swallow, endoscopy and HRM were performed, before and again 6 months after surgery. Results: Preoperative HRM revealed the three known patterns with statistically different esophageal diameters (pattern I having the largest), and patients with pattern I had the highest symptom scores. The surgical treatment failed in 10 cases (4.9%). The only predictor of final outcome was the preoperative manometric pattern (p = 0.01). All patients with pattern I preoperatively had the same pattern afterward, whereas nearly 50% of patients with pattern III before LHM had patterns I or II after surgery. There were no cases showing the opposite trend. Conclusions: Neither a change of manometric pattern after surgery nor a patient’s postoperative pattern was a predictor of final outcome, whereas preoperative pattern confirmed its prognostic significance. The three manometric patterns distinguishable in achalasia may represent different stages in the disease’s evolution, pattern III and pattern I coinciding with the early and final stages of the disease, respectively.

Original languageEnglish
Pages (from-to)3510-3518
Number of pages9
JournalSurgical Endoscopy and Other Interventional Techniques
Issue number9
Publication statusPublished - Sep 1 2017


  • Achalasia
  • Heller-Dor
  • Manometric pattern
  • Myotomy

ASJC Scopus subject areas

  • Surgery


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