Peroral endoscopic myotomy (POEM) is a minimally invasive treatment for esophageal achalasia
with a natural orifice transluminal endoscopic procedure and far less invasive than the
standard surgical or laparoscopic Heller myotomy (LHM). Less is known about the postoperative
pain after POEM and the minor surgery trauma, short length of stay may lead to
underestimation of postoperative pain control. We tend to observe the pain status after the
POEM surgery under the empirical treatment in our center, and find a proper intra-operative
way of pain control to solve the post-operative pain and seek the possible influence factors
of postoperative pain.