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Peroral endoscopic myotomy for a residual Zenker's diverticulum following endoscopic myotomy.

ABSTRACT: Video 1Peroral endoscopic myotomy for a residual Zenker's diverticulum following endoscopic myotomy.

SUBMITTER: Dawod Q

PROVIDER: S-EPMC8755520 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Peroral Endoscopic Myotomy in the Management of Zenker's Diverticulum: A Retrospective Multicenter Study.

Project description:BackgroundPeroral endoscopic myotomy (POEM) is an emerging technique in the treatment of Zenker's diverticulum (ZD). This study aimed to analyze the feasibility of Zenker's POEM (Z-POEM) in a multicenter setting and assess its performance using a validated Kothari-Haber Scoring System newly developed for symptom measurement in ZD.Materials and methodsThis was a multicenter retrospective study involving three Polish tertiary referral endoscopic units. The data of consecutive patients with symptomatic ZD treated with Z-POEM in Poland between May 2019 and August 2020 were retrieved and analyzed. Primary outcome measures were technical success and clinical success rate (<3 points in Kothari-Haber Score at 2-3 months follow-up). Secondary outcome measures included procedures' duration, length of hospital stay, and adverse events.Results22 patients with symptomatic ZD were included. The mean age was 67.6 (±10.7) years, and 14 (63.6%) were male. All but two patients were treatment naïve. The average size of the ZD was 30 mm (IQR, 24-40 mm). Technical success was achieved in all patients (100%), whereas clinical success was 90.9%. The average Kothari-Haber Score was 6.35 before treatment and has dropped to 0.65 after the treatment (p < 0.0001). The mean procedure time was 48.8 (±19.3) minutes, and the median length of hospital stay was 2 days (IQR, 2-3). Three patients (13.6%) had post-procedural emphysema, of which two were mild and self-resolving (9.1%), and one was moderate (4.5%) and complicated with laryngeal edema and prolonged intubation.ConclusionsThis feasibility study suggests that Z-POEM is a highly effective and safe treatment for ZD, particularly among treatment-naïve patients. Comparative studies with other treatment modalities over longer follow-up are warranted.

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Modified Zenker's peroral endoscopic myotomy: a novel technique to improve access and depth of muscular dissection.

Project description:Video 1The modified Zenker's peroral endoscopic myotomy technique to treat a large Zenker's diverticulum.

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Peroral endoscopic myotomy for cricopharyngeal bar.

Project description:Background and aimsDefinitive treatment options for refractory dysphagia due to cricopharyngeal bar are limited. We aimed to demonstrate a novel adaptation of peroral endoscopic myotomy to treat this condition (cricopharyngeal peroral endoscopic myotomy [c-POEM]).MethodsThe approach to c-POEM is similar to that in the distal esophagus for the treatment of achalasia. A submucosal injection and overlying mucosal incision are performed, ideally 1.5 to 2 cm upstream of the upper esophageal sphincter, and then a submucosal tunnel is extended beyond the level of the cricopharyngeus. The target muscle is then transected before closure of the mucosotomy.ResultsIn 3 cases of refractory cricopharyngeal bar, c-POEM was successfully performed. Although no major adverse events occurred, significant postprocedural edema at the level of the upper esophageal sphincter prolonged hospitalization in 2 of the 3 patients. After recovery, all patients reported complete resolution of dysphagia and tolerated an unrestricted diet.ConclusionsC-POEM allows reliable and complete muscular division in patients with refractory cricopharyngeal bar who have limited treatment options.

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Learning curve for peroral endoscopic myotomy.

Project description:Although peroral endoscopic myotomy (POEM) is being performed more frequently, the learning curve for gastroenterologists performing the procedure has not been well studied. The aims of this study were to define the learning curve for POEM and determine which preoperative and intraoperative factors predict the time that will be taken to complete the procedure and its different steps.Consecutive patients who underwent POEM performed by a single expert gastroenterologist for the treatment of achalasia or spastic esophageal disorders were included. The POEM procedure was divided into four steps: mucosal entry, submucosal tunneling, myotomy, and closure. Nonlinear regression was used to determine the POEM learning plateau and calculate the learning rate.A total of 60 consecutive patients underwent POEM in an endoscopy suite. The median length of procedure (LOP) was 88 minutes (range 36 - 210), and the mean (± standard deviation [SD]) LOP per centimeter of myotomy was 9 ± 5 minutes. The total operative time decreased significantly as experience increased (P < 0.001), with a "learning plateau" at 102 minutes and a "learning rate" of 13 cases. The mucosal entry, tunneling, and closure times decreased significantly with experience (P < 0.001). The myotomy time showed no significant decrease with experience (P = 0.35). When the mean (± SD) total procedure times for the learning phase and the corresponding comparator groups were compared, a statistically significant difference was observed between procedures 11 - 15 and procedures 16 - 20 (15.5 ± 2.4 min/cm and 10.1 ± 2.7 min/cm, P = 0.01) but not thereafter. A higher case number was significantly associated with a decreased LOP (P < 0.001).In this single-center retrospective study, the minimum threshold number of cases required for an expert interventional endoscopist performing POEM to reach a plateau approached 13.

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