Olympus medical systems corporation reviewed a literature titled "short-term outcome of peroral endoscopic myotomy performed by the same endoscopist on achalasia and nonachalasia esophageal motility disorders." a retrospective analysis of all patients undergoing poem at one university hospital by a single expert endoscopist from july 2021 to december 2022 was performed.All patients were symptomatic, and the presence of esophageal motility disorders was confirmed using multiple diagnostic modalities.These patients were then divided into 2 groups, achalasia and naemd, based on the underlying diagnosis.Statistical analysis of different clinical outcomes, including effectiveness and safety, was performed.Adverse events/number of patients: chest pain (3).Blood loss (1).Perforation (1).Two patients in the achalasia group experienced moderate blood loss during the procedure but did not develop hemodynamic instability or require blood transfusion.One patient in the achalasia group and 2 patients in the naemd group reported severe chest pain immediately after the procedure.These patients were admitted under close observation and pain was controlled with intravenous opioids and ppi, and patients were subsequently discharged.One patient in the naemd group had an esophageal mucosal injury requiring closure with one endoscopic clip.This patient did not require hospital admission or additional treatment.In total, 9 patients from the achalasia group and 10 patients from the naemd group were admitted to the hospital post procedure with the mean hospital stay being 1.2 and 0.82 days, respectively, for each group.As previously mentioned, patients were admitted post procedurally for both clinical reasons (pain, procedure difficulty, and complications and social factors (patient preference, travel distance, and ride availability).
|
This report is being supplemented to provide additional information based on the legal manufacturer's final investigation and to provide additional information received through follow up.The device history record was unable to be reviewed for this device since the serial and/or lot number was not provided.However, olympus only releases products to market that meet all manufacturing specifications and final product release criteria.Based on the results of the investigation, the relationship between the device and the adverse events cannot be confirmed.There was no complaint reported on the subject device.There is no evidence of an olympus device malfunction.Therefore, the root cause cannot be determined.Olympus will continue to monitor field performance for this device.
|