High Eckardt score and previous treatment were associated with poor postperoral endoscopic myotomy pain control: A retrospective study

Table 1 Basic characteristics according to the visual analog scale at 12 h after surgery (mean ± SD)

	Total	VAS < 4	VAS ≥ 4	P value
Sex (%)
Female	21 (46.7)	8 (38.1)	13 (54.2)	0.44
Male	24 (53.3)	13 (61.9)	11 (45.8)
Age	43.2 ± 15.7	45.0 ± 18.0	41.5 ± 13.6	0.60
Symptom duration (yr)	6.0 ± 6.3	4.1 ± 4.9	7.5 ± 7.0	0.019
Eckardt score	7.6 ± 2.1	6.7 ± 2.2	8.4 ± 1.6	0.013
Esophageal diameter (mm)	42.9 ± 10.7	39.0 ± 10.0	46.3 ± 10.4	0.022
Esophageal dilatation classification (%)
Ⅰ	20 (44.4)	13 (61.9)	7 (29.2)	0.088
Ⅱ	21 (46.7)	7 (33.3)	14 (58.3)
Ⅲ	4 (8.9)	1 (4.8)	3 (12.5)
Previous treatment (%)
No	35 (77.8)	19 (90.5)	16 (66.7)	0.078
Yes	10 (22.2)	2 (9.5)	8 (33.3)
Operative time (min)	61.3 ± 18.8	58.8 ± 16.9	63.5 ± 20.4	0.46
Anesthesia time (min)	74.1 ± 21.0	72.1 ± 17.5	75.8 ± 23.9	0.73
Tunnel length (cm)	12.7 ± 1.2	12.6 ± 0.6	12.8 ± 1.5	0.56
Myotomy length (cm)	10.7 ± 1.1	10.6 ± 0.7	10.8 ± 1.4	0.35
Distance from muscle incision ending to cardia (cm)	2.1 ± 0.3	2.0 ± 0.2	2.2 ± 0.4	0.22
Fentanyl dosage (ug) (%)
100	37 (82.2)	16 (76.2)	21 (87.5)	0.44
150	8 (17.8)	5 (23.8)	3 (12.5)
Remifentanil dosage (ug)	265.5 ± 90.8	264.8 ± 85.3	266.1 ± 97.2	1.0

VAS: Visual analog scale.