Endoscopic ultrasonography-guided transmural drainage of walled-off pancreatic necrosis: Comparison between a specially designed fully covered bi-flanged metal stent and multiple plastic stents.

BACKGROUND AND AIM: Endoscopic ultrasonography (EUS)-guided drainage of walled-off necrosis (WON) may be carried out by placement of multiple plastic stents (MPS) or specially designed fully covered bi-flanged metal stents (BFMS). Comparative data on efficacy of these two stent types for WON drainage are limited. This retrospective study compares outcomes of WON drainage using BFMS and MPS. METHODS: During a 10-year period, 133 patients underwent EUS-guided WON drainage. MPS or BFMS were placed in a WON cavity through a single puncture, and direct endoscopic necrosectomy (DEN) was carried out whenever clinically necessary. Data in the two cohorts were retrospectively compared for primary outcomes - clinical success, adverse events and mortality; and secondary outcomes - DEN requirement, mean DEN sessions, need for salvage surgery and hospital stay. RESULTS: MPS were placed in 61 and BFMS in 72 patients. Patients undergoing BFMS drainage required fewer DEN sessions (mean 1.46 vs 2.74, P < 0.05), had fewer adverse events (5.6% vs 36.1%, P < 0.05), needed salvage surgery less often (2.7% vs 26.2%, P < 0.05), and had significantly shorter hospital stay (4.1 vs 8 days, P < 0.05) compared to those undergoing MPS drainage. There was no difference in DEN requirement (P = 0.217) and mortality (P = 0.5) in both groups. Overall clinical success with BFMS was superior to MPS (94% vs 73.7%, P < 0.05). CONCLUSION: BFMS appear to be superior to MPS for EUS-guided WON drainage in terms of clinical success, number of DEN sessions, adverse events, need for salvage surgery and hospital stay.

Trans-oral anterior fundoplication: 5-year follow-up of pilot study.

BACKGROUND: This is a report of an IRB-approved pilot study of 13 patients who received a trans-oral anterior partial fundoplication for the treatment of GERD using an ultrasound-guided, flexible surgical stapler. All patients had a history of PPI use, objective evidence of GERD, and no significant comorbidity. Under general anesthesia, a flexible stapler was passed trans-orally into the stomach and placed two or three quintuplets of titanium staples approximately 3 cm above the gastroesophageal junction. The stapler contains an ultrasonic range finder, video camera, and illuminator. METHODS: Primary follow-up at 6 weeks included pH metrics, GERD-HRQL scores, and PPI use. The protocol allowed annual telephone interviews for the following 5 years to collect GERD-HRQL scores, PPI use, satisfaction with the procedure, and willingness to have the procedure again. RESULTS: At 6 weeks, mean total acid exposure was significantly reduced, and 12/13 patients reduced GERD-HRQL scores by ≥50%. Twelve of 13 patients had stopped daily GERD medications, and nine of 13 had stopped all GERD medications. Each year, 11 of the 13 patients could be reached with all 13 patients having at least 4-year follow-up. Throughout the follow-up period, GERD-HRQL scores were normal (<10) in all but one patient. All patients would agree to do the procedure again. The median satisfaction score is 8 (range 6-10) on a scale of 1-10. None reported dysphagia. At 1 year, 54% of respondents (6/11) had eliminated PPI use, with another 27% (3/11) taking a reduced dose. Combining respondents at 4 and 5 years to account for all patients, 54% (7/13) had eliminated and another 23% (3/13) reduced PPI use ≥50 %. CONCLUSION: At 5 years, the procedure remained effective as demonstrated by the improved quality of life and changes in PPI use. The results remained stable after the second year.

Simple mathematical equation to predict distance to gastroesophageal junction through the submucosal tunnel during peroral endoscopic myotomy.

Background and aim Accurate estimation of the distance to the gastroesophageal junction (GEJ) through a tunnel during per oral endoscopic myotomy (POEM) is technically challenging. The methods currently employed are often insufficient, and resultant errors may lead to incomplete myotomy and/or prolonged procedure times. Our hypothesis states that the additional distance while traversing the tunnel is directly proportional to the widest esophageal diameter; and is calculated by the formula X = Y + CZ (X = distance to the GEJ through the tunnel, Y = distance to the GEJ through the lumen, Z = widest esophageal diameter, C = arithmetic constant). This study evaluates the validity and accuracy of this hypothesis. Patients and methods This was a prospective single-center study with 80 patients, 12 in the pilot group and 68 in the study group. In the pilot group, Y was recorded during esophagogastroduodenoscopy (EGD) before POEM, Z on barium swallow/contrast enhanced computed tomography (CECT), and X was measured during POEM. Using the formula, mean C (SD) was calculated. In the study group, 'C' was substituted in the equation to predict the GEJ distance through the tunnel (Xp) before POEM. The operator was blinded to Xp and recorded the true Xt during POEM. The correlation between Xp and Xt was calculated. Results In the pilot group, the mean distances (cm, SD) for X, Y, and Z were 42.58 (3.33), 39.83 (3.08), and 4.39 (1.16), respectively. The calculated mean C was 0.63 (0.11). In the study group, the mean distances (cm, SD) for Y, Z, Xp, and Xt were 40.45 (2.58), 4.99 (1.43), 43.57 (2.68), and 43.54 (2.78), respectively. The Xp and Xt values demonstrated a high correlation (r = 0.97, P  = 0.000). Conclusions Formula X = Y + CZ reliably predicts the GEJ distance through a tunnel during POEM. It is user friendly and requires no additional resources.

Peroral Endoscopic Myotomy (POEM) in a Patient with Complete Heart Block-a Case Report.

Achalasia cardia is the commonest esophageal motility disorder. Recently, a new endoscopic procedure-peroral endoscopic myotomy (POEM)-has emerged for treating this chronic and debilitating condition. It has shown comparable success rates in prospective studies with conventional Heller's myotomy with lesser rates of postoperative reflux. Literature regarding this procedure from India is scarce due to its limited availability. This case report illustrates the use of POEM in a patient with a permanent cardiac pacemaker and demonstrates its safety and efficacy in such a situation.