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  • Title: Videoscopic heller myotomy as first-line therapy for severe achalasia.
    Author: Bloomston M, Serafini F, Rosemurgy AS.
    Journal: Am Surg; 2001 Nov; 67(11):1105-9. PubMed ID: 11730231.
    Abstract:
    To many nonsurgeons myotomy is considered an excessively invasive treatment for achalasia and has become a salvage procedure when esophageal dilation and botulinum toxin (botox) injections fail. We sought to examine our experience with videoscopic Heller myotomy to determine whether preoperative therapy predicts perioperative complications and long-term outcome. Videoscopic Heller myotomy was undertaken in 111 patients with achalasia between June 1992 and May 2000. Intraoperative endoscopy was used in all patients. Fundoplication was used selectively for patients with large hiatal hernias or as part of repair of esophageal perforation. Patients were asked to grade their dysphagia and reflux symptoms before and after myotomy on a scale of 0 (no symptoms) to 5 (severe symptoms). Patients were also asked to rate their outcome as excellent (no symptoms), good (greatly improved), fair (slightly improved), or poor (not improved) compared with their preoperative status. Patients were stratified on the basis of preoperative intervention (botox, pneumatic dilation, botox and pneumatic dilation, or no botox or dilation) and compared. Previous pneumatic dilation and/or botox injection had been undertaken before operation in 88 (79%) patients whereas 23 (21%) patients had no invasive preoperative therapy. The overall mean preoperative dysphagia score was 4.8+/-0.8 and mean preoperative reflux score was 3.3+/-2.1. Groups of patients undergoing preoperative interventions were similar to those patients not undergoing preoperative interventions in terms of preoperative symptoms, dysphagia scores, and reflux scores. Postoperative complications (13%) and perforations (8%) were slightly more common in patients who had undergone preoperative botox or dilation (P = not significant). Subjectively, operative myotomy was more difficult in patients who had preoperative botox or dilation. Patients had significant improvement in dysphagia, dysphagia score, reflux score, emesis/ regurgitation, and chest pain (P < 0.05) regardless of preoperative intervention. After myotomy patients who had never undergone botox or pneumatic dilation were less likely to have mild dysphagia compared with those with previous botox injections (30% vs 53%; P = 0.09), previous dilations (30% vs 54%; P = 0.09), or both (30% vs 59%; P = 0.04). As well, dysphagia scores were better if no preoperative therapy had been undertaken: botox 0.8+/-1.3, dilation 1.0+/-1.4, botox and dilation 1.0+/-1.3, and no therapy 0.3+/-0.7 (P < 0.05). Overall 97 per cent of patients stated that their symptoms were improved although more patients tended to have excellent or good outcomes if no preoperative intervention was undertaken (91%) compared with patients undergoing preoperative botox (86%), dilation (83%), or both (82%) (P = not significant). We conclude that videoscopic Heller myotomy is safe and efficacious particularly in patients who have not undergone previous endoscopic interventions. The difference in patients' outcomes based on preoperative therapy may be related to a less difficult operation in patients who forgo endoscopic therapy and elect to undergo early myotomy. Although videoscopic Heller myotomy provides good outcomes as a salvage procedure after failed dilations and/or botox injections for achalasia we advocate it as first-line therapy in reasonable operative candidates.
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