Oral Endoscopic Myotomy Research Articles

Difficult Closure of Buried and Inverted Entry Site during Per Oral Endoscopic Myotomy: Applying Proximal Clip First May Be the Solution!

Difficult Closure of Buried and Inverted Entry Site during Per Oral Endoscopic Myotomy: Applying Proximal Clip First May Be the Solution!

Elevated preoperative lower esophageal sphincter pressure predicts improved clinical outcomes after per oral endoscopic myotomy (POEM).

Although per oral endoscopic myotomy (POEM) has shown to be beneficial forthe treatment ofachalasia, it can be difficult to predict who will have a robust and long-lasting response. Historically, it hasbeen shownthat higher lower esophageal sphincter pressures havebeen associatedwith poorer responses to alternative endoscopic therapies such as Botox therapy and pneumatic dilation. This studywas designedto evaluate if modern preoperative manometric data could similarly predict response totherapyafter POEM. This was a retrospective study of 237 patients who underwent POEM at a single institution over a period of 13years (2011-2023) and who had a high-resolution manometry performed preoperativelyandan Eckardt symptom score performed both preoperative and postoperatively. The achalasia type and integrated relaxation pressures (IRP) were tested for potential correlation with the need for any further achalasia interventions postoperativelyaswell asthe degree of Eckardt score reduction using a linear regression model. The Achalasia type on preoperative manometry was not predictive for further interventions or degree of Eckardt score reduction (p = 0.76 and 0.43, respectively). A higher IRP was not predictive of the need forfurtherinterventions, however, it was predictive of agreaterreduction in postoperative Eckardt scores (p = 0.03)asshown by the non-zero regression slope. In this study, achalasia type was not a predictive factor in the need for further interventions or the degree of symptom relief.Although IRPwas not predictive ofthe need for further interventions, a higher IRPdid predictbetter symptomatic relief postoperatively.This result is opposite that of other endoscopic treatment modalities (Botox and pneumatic dilation). Therefore, patients with higher IRP on preoperative high-resolution manometry would likely benefit from POEMwhichprovides significant symptomatic relief postoperatively.

Safety and Effectiveness of Per Oral Endoscopic Myotomy (POEM) for Achalasia in Pakistani Population

Safety and Effectiveness of Per Oral Endoscopic Myotomy (POEM) for Achalasia in Pakistani Population

Does preoperative symptom duration affect outcomes following per oral endoscopic myotomy (POEM)?

Per oral endoscopic myotomy (POEM) is a safe therapy for the treatment of achalasia. Long-term effects of untreated achalasia include worsening dysmotility and disruptions in esophageal anatomy, i.e., tortuosity and dilation. We hypothesize that long-standing achalasia prior to intervention will have worse outcomes following POEM than in patients with symptoms for shorter duration. We retrospectively analyzed achalasia patients who underwent POEM at our institution from 2011 to 2023, categorizing them into symptom duration cohorts (< 1year, 1-3years, 4-10years, > 10years). Inclusion criteria comprised patients with documented achalasia diagnosis who received POEM treatment at our facility. Exclusion criteria encompassed individuals lacking data pertaining to achalasia diagnosis, the time frame before intervention, or those missing pre and postoperative Eckardt scores. POEM failure was defined as symptom recurrence, necessity for repeat intervention, or high postoperative Eckardt score. We compared demographic, preoperative, and postoperative outcomes across these cohorts, and employed multivariable logistic regression to explore the link between symptom duration and POEM response. During the study period, in our increased cohort 234 patients met inclusion criteria. 75 patients had symptoms for < 1year, 78 patients had symptoms from 1 to 3years, 47 patients had symptoms from 4 to 10years, and 34 patients had symptoms > 10years. Patient demographics such as age, sex, BMI, Charleson-Deyo-Comorbidity-Index, and diabetes did not differ amongst cohorts. High-resolution manometry data, including achalasia type, Median IRP, LES residual pressure, and Basal LES pressure did not differ between groups. Preoperative Eckardt scores ranged from 4 to 5 across groups (p 0.24). Patients endorsed an average of three total preoperative symptoms across groups (p 0.13). Patients with symptoms greater than 4years had significantly more endoscopic interventions prior to POEM (37% vs, 68% p .001). There was no significant difference in post-procedure mean Eckardt scores between cohorts. All cohorts experienced the same number of post-POEM symptoms. Post-POEM manometric measurements remained consistent across cohorts. Similarly, there were no significant differences in terms of symptom recurrence, requirement for repeat interventions, or repeat POEM among the cohorts. Multivariable logistic regression analysis determined achalasia symptoms greater than a decade did not result in increased odds of having a higher postoperative Eckardt score, worse dysphagia, regurgitation, or weight loss. In this increased cohort, this data once again suggests that longer symptom duration is not associated with increased rates of POEM failure.

381. MULTICENTER PAN-CANADIAN EXPERIENCE OF PER ORAL ENDOSCOPIC MYOTOMY (POEM) FOR THE TREATMENT OF ACHALASIA: A RETROSPECTIVE STUDY

Abstract Background Per oral endoscopic myotomy (POEM) has emerged as a modality for the surgical treatment of achalasia using a minimally invasive approach with similar clinical efficacy to laparoscopic Heller myotomy. Japanese, European, American and International clinical practice guidelines now cite POEM as a first line treatment for achalasia. In Canada, single-centre experiences with POEM have shown promising results. This study aims to capture the pan-Canadian national experience with POEM for the treatment of achalasia across multiple institutions. Methods This was a retrospective study of patients who underwent POEM for achalasia across four Canadian institutions (St. Joseph's Healthcare Hamilton, Kingston Health Sciences Centre, Surrey Memorial Hospital and Montreal Sacred Heart Hospital) between 2012 to 2022. Pre-operative, procedural and post-operative data was collected. Our primary outcome was the proportion of patients with normal Eckhardt score (≤ 3) at 4 weeks. Secondary outcomes included procedure related adverse events, length of stay in hospital, post-procedure lower esophageal sphincter pressures, post-procedure gastroesophageal reflux disease (GERD) and response rate at further timepoints. Outcomes are reported as either proportions (%) or medians (IQR). Results POEM was attempted in 369 patients with a success rate of 99%. The median duration of surgery was 64 (47 – 89) minutes and length of stay was ≤1 day in 88% of patients. Peri-operative complications occurred in 11% of patients, all of which were Clavien-Dindo Grade ≤III. The post-operative response rate (Eckhardt score ≤3) was 100%, 98% and 95% at 1, 6 and 12 months, respectively. Additional interventions for achalasia following POEM were required in 6% of patients. High DeMeester scores, endoscopic esophagitis and symptomatic GERD were reported in 36%, 43% and 44%, respectively. 93% of GERD was treated with PPI therapy. Conclusions POEM is safe and feasible in Canadian institutions with efficacy in keeping with current international literature.

EndoFLIP Use in De Novo and Revisional Foregut Surgery

AbstractEndoFLIP technology, utilizing impedance planimetry, has revolutionized the assessment of gastrointestinal sphincters by providing real-time measurements of cross-sectional area and pressure to calculate distensibility. This review explores its application in de novo and revisional foregut surgeries. Preoperatively, EndoFLIP has demonstrated efficacy in evaluating gastroesophageal reflux disease, hiatal hernia, and esophageal motility disorders, including achalasia, by distinguishing motility patterns and identifying sphincter incompetence. In gastroparesis, EndoFLIP's measurement of pyloric distensibility correlates with gastric emptying and symptom severity, guiding therapeutic decisions for pyloric interventions. Intraoperatively, EndoFLIP optimizes surgical outcomes in antireflux procedures, such as fundoplication and hiatal hernia repairs, by balancing effective reflux control with minimizing postoperative complications like dysphagia and gas bloat. For esophageal myotomy, including Heller myotomy and per oral endoscopic myotomy, EndoFLIP ensures adequate sphincter relaxation, reducing reflux risks. Additionally, during endoscopic pyloromyotomy for gastroparesis, EndoFLIP predicts clinical success by assessing postprocedural distensibility. While promising, further research is essential to establish standardized intraoperative protocols and ideal measurement targets, enhancing the reproducibility and accuracy of EndoFLIP applications. Overall, EndoFLIP offers a significant advancement in foregut surgery, improving diagnostic precision and therapeutic outcomes.

Gastroesophageal reflux after per oral endoscopic myotomy for achalasia: Results of a monocentric cohort

Background and study aimsPeroral endoscopic myotomy (POEM) has become the first line treatment for achalasia, but controversies remain about the prevalence of gastro-esophageal reflux disease (GERD) after the procedure. The aim of this study was to evaluate post-POEM GERD by a retrospective analysis of a single center cohort. Patients and methodsAchalasia patients aged 18 or above, who underwent POEM between 2012 and 2021, were included, provided they had an endoscopic control of reflux at least one year after POEM. GERD symptoms based on GerdQ questionnaire, and proton pomp inhibitors (PPI) consumption were also evaluated. ResultsAmong a consecutive cohort of 422 patients treated by POEM, 254 patients were included. Endoscopic results were available after a mean follow-up of 1.9 ± 1.5 years. 71/254 patients (28 %) had erosive esophagitis (86 % Los Angeles Grade A or B). At the last follow-up (mean 4.5 ± 2.2 years), clinical success of POEM (Eckardt score ≤ 3) was achieved in 79.5 % of patients. 44.5 % of patients were on PPI. Mean GerdQ score was 2.2 ± 2.7, with only 13 patients (6.5 %) with a score ≥ 8. ConclusionIn this cohort of achalasia patients with an endoscopic follow-up at least 1 year after POEM, GERD did not appear a major threat concern: clinical symptoms were mild in most cases, as was the degree of erosive esophagitis. Furthermore, at the time of last follow up, less than half of patients required treatment with PPI.

Evaluation of postoperative esophagram following peroral endoscopic myotomy (POEM).

The routine use of post-operative esophogram has come under evaluation for multiple upper GI surgeries such as with bariatric surgery and gastric resections. A major complication following Per Oral Endoscopic Myotomy (POEM) is a leak from the myotomy site. A post-operative contrast esophogram is often utilized to evaluate the presence of a leak, however it is not a standardized care practice for all patients. Presently it is selectively performed depending on physician assessment intra-operatively. This project will evaluate the necessity of post-operative contrast esophogram following POEM. We retrospectively reviewed 277 patients diagnosed with achalasia who underwent POEM by two surgeons from 2011 to 2022. 173 patients met the inclusion criteria. A post-operative esophogram was used for the evaluation of a leak. Post-operative esophagram were selectively performed on day 1 following surgery using a water-soluble material. Data was evaluated using Stata. There were 3 detected leaks in the group that underwent esophagrams compared to the non-esophagram group in the early post-operative period. The overall complication rate was 5.5% in the non-esophagram versus 7.9% in the esophagram group. Length of stay was 1.48days in the non-UGI vs 1.76days in the esophagram group. Readmission rate was 10.9% in non-esophagram versus 8.7% in esophagram group. There was no statistically significant difference in outcomes in patients undergoing POEM who received post-operative esophagram verses patients who did not receive post-operative esophagram. The routine use of a contrast esophogram to detect a leak following POEM may not be justified. This study suggests that esophagrams should be performed depending on the clinical signs/symptoms post-operatively that would warrant imaging and intervention.

Per oral endoscopic myotomy in esophageal achalasia in children. First endoscopic procedures

BACKGROUND: Achalasia is an esophagus lesion which is characterized by disorders of its motility. It is met extremely rare in childhood. Among the existing techniques of achalasia management, Heller's laparoscopic myotomy is a procedure of choice. Peroral endoscopic myotomy (POEM) is an endoscopic method for AP treating proposed by P. Pasricha in 2007. AIM: To describe the experience of per oral endoscopic myotomy in children. METHODS: The authors performed a retrospective analysis of data taken from the patients with confirmed esophageal achalasia who had had POEM. Clinical efficacy was assessed using the Eckard scale. RESULTS: In 2018–2021, 8 children with average age 14.4 years were treated with POEM surgery. Before POEM, 2 children underwent balloon dilatation of the cardia. The surgery was technically performed in all children. Dysphagia was eliminated in all patients, and none of them required any additional intervention. A significant decrease in Eckard scale scores was registered in all children after surgery. CONCLUSION: Our results confirm findings that POEM is an effective procedure for treating esophageal achalasia. However, a longer follow-up period and a larger group of patients are needed to confirm POEM role in the management of children with esophageal achalasia.

Long Term Paired Outcomes of Index and Redo Per Oral Endoscopic Myotomy

Long Term Paired Outcomes of Index and Redo Per Oral Endoscopic Myotomy

Sublingual Nitroglycerine Spray Facilitates Efficient Submucosal Tunneling during Per Oral Endoscopic Myotomy—A Nonrandomized Trial

Abstract Introduction In the last one decade, per oral endoscopic myotomy (POEM) has been found to be an effective minimally invasive approach for the treatment of esophageal achalasia cardia and was lately shown to be noninferior to laparoscopic Heller's myotomy in a randomized controlled trial.Here we describe a new method of using sublingual nitroglycerine spray during submucosal tunneling to facilitate the procedure. Materials and Methods This study includes a cohort of 50 patients who were diagnosed with achalasia cardia on high-resolution esophageal manometry. Out of the 50 patients, 27 patients were administered two metered doses of sublingual nitroglycerine spray during submucosal tunneling across the gastroesophageal junction (GEJ), and 23 patients were not administered nitroglycerine. This process was nonrandomized; patients were assigned sublingual nitroglycerine using alternating sequence enrollment number. Results All the procedures were technically feasible and successful without any major complications. Eckhardt's scores of all patients normalized after the procedure. The mean submucosal tunneling time and mean time across GEJ were 36.8 ± 7.9, 14.2 ± 2.9 in intervention group (sublingual nitroglycerine), and 50.2 ± 8.9 and 23.0 ± 3.6 minutes in nonintervention group, respectively. Time for each procedure was significantly less (p &lt; 0.05) in patients who were given sublingual nitroglycerine. Mucosal injury and bleeding during procedure were not significantly different in the two groups. Conclusion This POEM technique with the use of sublingual nitroglycerine spray is simple and renders POEM easier and less time consuming.

Long Term Paired Outcomes of Index and Redo per Oral Endoscopic Myotomy

Introduction: Per-Oral Endoscopic Myotomy (POEM) is a specialized procedure designed to improve symptoms by minimizing lower esophageal sphincter pressure in patients with achalasia. Despite excellent reported success rates, about 10% of patients have persistent or recurrent symptoms after procedure. There are limited studies looking at the efficacy of redo POEMS for these patients. In particular, there is no published data on comparing the paired effect of index POEM and redo POEM individually. We aimed to compare paired data of index and redo POEMs and provide election criteria for redo POEM. Methods: We conducted a retrospective observational study of all patients who underwent both index and redo POEM between August 2014 and January 2020 at Emory University. All patients underwent standard POEM protocol. We defined clinical success by an Eckardt score &lt;3 post procedure. Results were analyzed with t tests, Chi squared tests where appropriate, or were otherwise reported as means with corresponding ranges. Results: 15 patients underwent redo POEM (ages 25-79, 53% female). One was lost to long-term follow up. There was no significant difference noted between index and redo POEM in procedure time (61.9 minutes vs. 62.2 minutes) (p=0.96), myotomy length (6.9 cm vs.6.1 cm) (p=0.13). 10 out of 15 patients (67%) achieved clinical success post-procedure with an Eckhardt score &lt;3. Conclusion: Redo POEM procedure can be safely performed even on the same side of index POEM. Patients with previous interventions, those who clinically failed index POEM (never-responders), and those who initial responded (recurred) all can benefit from and should be offered redo POEM procedure. However, patients with severely diffusely dilated esophagus may not benefit from redo POEM and warrant surgical consultation for esophagectomy, if necessary.

Per Oral Endoscopic Myotomy: Technique and Tricks for Challenging Anatomy

Per Oral Endoscopic Myotomy: Technique and Tricks for Challenging Anatomy

Peroral Endoscopic Myotomy (POEM) and Laparoscopic Heller Myotomy with Dor Fundoplication for Esophagogastric Junction Outflow Obstruction (EGJOO): a Comparison of Outcomes and Impact on Physiology

IntroductionEsophagogastric junction outflow obstruction (EGJOO) is an esophageal motility disorder characterized by failure of lower esophageal sphincter (LES) relaxation with preserved peristalsis. Studies have shown that Heller myotomy with Dor fundoplication (HMD) and per oral endoscopic myotomy (POEM) are effective treatments for EGJOO. However, there is paucity of data comparing the efficacy and impact of these two procedures. Therefore, the aim of this study was to compare outcomes and impact on esophageal physiology in patients undergoing HMD or POEM for primary EGJOO. MethodsThis was a retrospective review of patients who underwent either HMD or POEM for primary EGJOO at our institution between 2013 and 2021. Favorable outcome was defined as an Eckardt score ≤ 3 at 1 year after surgery. GERD–HRQL questionnaire, endoscopy, pH monitoring, and high-resolution manometry (HRM) results at baseline and 1 year after surgery were compared pre- and post-surgery and between groups. Objective GERD was defined as DeMeester score > 14.7 or LA grade C/D esophagitis. ResultsThe final study population consisted of 52 patients who underwent HMD (n = 35) or POEM (n = 17) for EGJOO. At a mean (SD) follow-up of 24.6 (15.3) months, favorable outcome was achieved by 30 (85.7%) patients after HMD and 14 (82.4%) after POEM (p = 0.753). After HMD, there was a decrease GERD-HRQL total score (31 (22–45) to 4 (0–19); p < 0.001), and objective reflux (54.2 to 25.9%; p = 0.033). On manometry, there was a decrease in LES resting pressure (48 (34–59) to 13 (8–17); p < 0.001) and IRP (22 (17–28) to 8 (3–11); p < 0.001), but esophageal body characteristics did not change (p > 0.05). Incomplete bolus clearance improved (70% (10–90) to 10% (0–40); p = 0.010). After POEM, there was no change in the GERD-HRQL total score (p = 0.854), but objective reflux significantly increased (0 to 62%; p < 0.001). On manometry, there was a decrease in LES resting pressure (43 (30–68) to 31 (5–34); p = 0.042) and IRP (23 (18–33) to 12 (10–32); p = 0.048), DCI (1920 (1600–5500) to 0 (0–814); p = 0.035), with increased failed swallows (0% (0–30) to 100% (10–100); p = 0.032). Bolus clearance did not improve (p = 0.539). Compared to HMD, POEM had a longer esophageal myotomy length (11 (7–15)-vs-5 (5–6); p = 0.001), more objective reflux (p = 0.041), lower DCI (0 (0–814)-vs-1695 (929–3101); p = 0.004), and intact swallows (90 (70–100)-vs-0 (0–40); p = 0.006), but more failed swallows (100 (10–100); p = 0.018) and incomplete bolus clearance (90 (90–100)-vs-10 (0–40); p = 0.004). ConclusionPeroral endoscopic myotomy and Heller myotomy with Dor fundoplication are equally effective at relieving EGJOO symptoms. However, POEM causes worse reflux and near complete loss of esophageal body function. Graphical Abstract [Display omitted]

S582 Need for Reinterventions After Per Oral Endoscopic Myotomy in Achalasia

S582 Need for Reinterventions After Per Oral Endoscopic Myotomy in Achalasia

S585 Trends in the Adoption of Per Oral Endoscopic Myotomy Compared to Heller Myotomy in the United States

S585 Trends in the Adoption of Per Oral Endoscopic Myotomy Compared to Heller Myotomy in the United States

Per Oral Endoscopic Myotomy in Treatment of Moroccan Patients with Achalasia: Prelimanary Result

Background and Objectives: Endoscopic myotomy is a recent technique that did spread quickly across high-income countries. The aim of this study is to report the experience of our department regarding the practice of POEM. Study design: It is a retrospective study including 13 patients with achalasia treated by POEM at the Department of Digestive Functional Explorations (EFD-HGE) of University Hospital Center Ibn Sina of Rabat, between January 2017 and June 2023. There was a break during the COVID19 pandemic and the endoscopic activity was stopped for a while. Results: The median age was 40, 46. Women were more affected than men: 69% and 31% respectively. Only 15% of cases had previous treatment (pneumatic dilation/surgical myotomy). The clinical success rate reached 84.6%. The mean of Eckardt scores decreased from 8 at baseline to 3 at 2 months. The IRP’s mean decreased from 23.9 mmHg to 15.6 mmHg after the gesture. The post-POEM reflux rate was less than 16%, but the rate of serious adverse events was relatively high. Conclusions: POEM is an effective procedure to treat achalasia with a low morbidity, provided that it is carried out in an expert center with suitable and good quality material.

Topic: Esophagus Benign-GERD, Achalasia, MotilityAbstract ID: 89Per Oral Endoscopic Myotomy (POEM) Procedure is a Safe and Effective Option for Children Less Than 10 Years of Age With Achalasia

Topic: Esophagus Benign-GERD, Achalasia, MotilityAbstract ID: 89Per Oral Endoscopic Myotomy (POEM) Procedure is a Safe and Effective Option for Children Less Than 10 Years of Age With Achalasia

Symptom duration is not associated with per oral endoscopic myotomy (POEM) failure.

Per oral endoscopic myotomy (POEM) is a relatively novel technique to address achalasia; however, little is known about the efficacy of POEM for patients with long-standing achalasia. We hypothesize that patients with long-standing achalasia prior to intervention will be more recalcitrant to POEM than patients with symptoms for a short duration. We performed a retrospective analysis of patients with achalasia who received a POEM at a single institution from 2012 to 2022. Patients were grouped into cohorts based on the time of symptom duration: < 1year, 1-3years, 4-10years, > 10years. POEM failure was defined as need for repeat intervention, symptom recurrence, and a high postoperative Eckart score. Demographic and clinical data were compared between cohorts. Measures of failure multivariable logistic regression analyzed the association between symptom duration and response to POEM. During the study period, 132 patients met inclusion criteria. Patient age at surgery, sex, BMI, Charleston-Deyo Comorbidity Index, and patients with diabetes with and without end organ complications, connective tissue diseases, and patients with ulcer diseases did not differ among cohorts. Patients who have had symptoms for greater than 10years had significantly more endoscopic interventions prior to their POEM (30% vs, 60% p = 0.002). Patients in all cohorts experienced the same number of symptoms post-POEM. Manometric measurements did not vary across cohorts after POEM. Symptom recurrence, need for repeat endoscopic intervention, repeat surgical intervention, or repeat POEM also did not vary across cohorts. Having symptoms of achalasia > 10years did not increase the odds POEM failure on multivariable logistical regression. These data suggest that longer symptom duration is not associated with increased rates of POEM failure. This is promising as clinicians should not exclude patients for POEM eligibility based on duration of symptoms alone.

Preoperative manometric data can predict symptom improvement after per oral endoscopic myotomy for treatment of achalasia.

While per oral endoscopic myotomy (POEM) has been shown to be efficacious in the treatment of achalasia, it can be difficult to predict who will have a robust and durable response. Historically, high lower esophageal sphincter pressures have been shown to predict a worse response to endoscopic therapies such as botox therapy. This study was designed to evaluate if modern preoperative manometric data could predict a response to therapy after POEM. This was a retrospective study of 144 patients who underwent a POEM at a single institution by a single surgeon over an 8-year period (2014-2022) who had high-resolution manometry performed preoperatively and had an Eckardt symptom score performed both preoperatively and postoperatively. The achalasia type and integrated relaxation pressures (IRP) were then tested for potential correlation with need for any further achalasia interventions postoperatively as well as the degree of Eckardt score reduction using univariate analysis. The achalasia type on preoperatively manometry was not predictive of need for further interventions or degree of Eckardt score reduction (p = 0.74 and 0.44, respectively). A higher IRP was not predictive of need for further interventions however it was predictive of a greater reduction in postoperative Eckardt scores (p = 0.03) as shown by a nonzero regression slope. In this study, achalasia type was not a predictive factor in need for further interventions or degree of symptom relief. While IRP was not predictive of need for further interventions, a higher IRP did predict better symptomatic relief postoperatively. This result is opposite that of other endoscopic treatment modalities. Therefore, patients with higher IRP on high-resolution manometry would likely benefit from myotomy which provides significant symptomatic relief postoperatively.