304 CONTINUOUS AND INTERMITTENT RECURRENT LARYNGEAL NERVE MONITORING IMPROVES SUPERIOR MEDIASTINAL DISSECTION FOR ESOPHAGEAL SQUAMOUS CELL CARCINOMA

the charges in the POEM cohort were due to the endoscopic clips that were used to close the mucosotomy.Conclusion: In our cohort, patients who underwent POEM compared to LHM have significantly better perioperative outcomes in terms of operative time, blood loss, length of stay and pain.Additionally, when controlling for patient factors, we found that POEM incurs lower charges than LHM.In the category of medical/surgical supplies, the main driver of charges in the POEM cohort are the endoscopic clips.