Safety and Efficacy of the Supine Position with the Right Shoulder Raised versus the Left Lateral Position in Peroral Endoscopic Myotomy for Achalasia: A Large-Sample Retrospective Study

Table 3

Comparisons of Eckardt scores and HRM between the two groups.

	Supine position with the right shoulder raised group ()	Left lateral position group ()	p value
Follow-up period, mean (range) (months)	23.5 (3–60)	25.4 (3–66)	0.106
Symptom score follow-up rate [n (%)]	532 (91.9)	107 (87.0)	0.085
Treatment success (Eckardt score ≤3) [n (%)]	515 (96.8)	102 (95.3)	0.394
Eckardt score, mean (range)	—	—	—
Pre-treatment	7.0 (4–12)	7.2 (4–12)	0.266
Post-treatment	1.2 (0–4)	1.4 (0–5)	0.092
Pre-post	5.8 (2–10)	5.8 (2–10)	0.850
Gastroesophageal reflux [n (%)]	68 (12.8)	15 (14.0)	0.728
HRM follow-up rate [n (%)]	182 (31.4)	31 (25.2)	0.172
LES basal pressure, mean (range) (mm Hg)	—	—	—
Pre-treatment	37.6 (0.7–100.6)	35.6 (6.2–73.9)	0.396
Post-treatment	15.6 (0.6–56.2)	17.2 (0.5–52.7)	0.247
Pre-post	22.0 (–9.4 to 79.1)	18.4 (–4.9 to 46.5)	0.105
LES residual pressure, mean (range) (mm Hg)	—	—	—
Pre-treatment	29.1 (1–83.2)	27.3 (6.5–74.2)	0.318
Post-treatment	11.1 (0.7–28.9)	12.1 (0.5–36.2)	0.266
Pre-post	18.0 (–5 to 64)	15.1 (–4.3 to 47.7)	0.086