Endoscopic Versus Robotic Myotomy for Treatment of Achalasia

Achalasia is a primary esophageal motor disorder of unknown etiology characterized by degeneration of the myenteric plexus, resulting in impaired relaxation of the esophagogastric junction (EGJ), along with loss of peristalsis in the esophageal body. The standard criteria for diagnosing achalasia is high-resolution esophageal manometry, which shows incomplete relaxation of the EGJ along with absence of esophageal body peristalsis. These anomalies usually cause dysphagia and regurgitation as the main symptoms of this pathology. Different treatment options have been described for this pathology, with pneumatic dilation (PD) and myotomy being considered first-line, whether surgical (laparoscopic Heller myotomy, LHM) or endoscopic (peroral endoscopic myotomy, POEM). The arrival of POEM as a less invasive alternative for the treatment of achalasia has revolutionized expectations to the point that it has become a routine procedure in many centers around the world. In recent years, a large amount of data examining the effectiveness of POEM have appeared, including several meta-analyses. The success rate of POEM in prospective cohorts has been greater than 90%. Two randomized studies have been published comparing POEM with LHM, providing a framework to evaluate the comparative efficacy and safety of these two interventions and to determine which should be first-line for the treatment of these patients. According to these data, it seems that the two procedures offer the same clinical results in the medium term. On the other hand, in recent years, there has been a growing expansion of the application of robot-assisted technology. Robotic Heller myotomy (RHM) has been proposed as an alternative minimally invasive approach to traditional laparoscopy with a lower complication rate. Based on the evidence, POEM and RHM could have comparable results in short term, but there is no clear certainty about the results in medium-long term. Likewise, there is a lack of studies that confirm postoperative reflux results in both procedures. The purpose of the study is to evaluate the clinical and quality of life results of the RHM and compare them with the results of POEM in treatment of achalasia.