Table 7.

Early and Late Complications of Peroral Endoscopic Myotomy [44,65]

Early complications	Percentage (%)
Mucosal injury	4.8
Esophageal perforation	0.2
Major bleeding	0.2
Subcutaneous emphysema	7.5
Pneumothorax	1.2
Pneumomediastinum	1.1
Pneumoperitoneum	6.8
Pleural effusion	1.2
Late complications	Percentage (%)
Symptomatic GERD	<15
Esophagitis on EGD	28
Abnormal exposure on 24-hour pH study	55

EGD, esophagogastroduodenoscopy; GERD, gastroesophageal reflux disease.