Peroral endoscopic myotomy is equally safe and highly effective treatment option in achalasia patients with both lower and higher ASA classification status

The American Society of Anesthesiologists (ASA) physical status classification system was developed as a simple categorization of patients’ physiological status that predicts the operative risk. Peroral endoscopic myotomy (POEM) is a less invasive alternative to surgical myotomy in achalasia. As such, POEM seems to be an appealing option for high-risk patients with achalasia. However, there are no studies which systematically analyzed the...