Endoscopic approach to achalasia

Table 3 Results of peroral endoscopic myotomy for the treatment of patients

Ref.	n	Mean age (yr)	Myotomy length (cm)	Follow-up (mo)	Symptomatic response (Eckardt score before/after POEM)	LES-tone (before/after POEM, mmHg)
Inoue et al[5]	17	41	8	5	10/1.3	52/20
von Renteln et al[80]	16	45	12	3	8.8/1.1	27/12
Swanström et al[110]	5	64	7	1	Not quantified	Not measured
Costamagna et al[111]	11	32	10	1	7.1/1.1	45/17
Chiu et al[112]	16	48	11	6	5.5/0	44/30

Only full text publications are considered. LES: Lower esophageal sphincter; POEM: Peroral endoscopic myotomy.