Application of Vagus Nerve Branch Preservation in Thoracoscopic Surgery for Early-Stage Lung Cancer

Table 1

Patient characteristics.

Variables	Experimental ( =22)	Control ( =31)	value
Age (years, mean ± SD)	56.5 ± 8.8	58.3 ± 9.8	0.311
Gender			0.515
Male	10 (45.6%)	13 (41.9%)
Female	12 (54.4%)	18 (58.1%)
Smoking status			0.487
Smoker	4 (18.2%)	7 (22.6%)
Nonsmoker	18 (81.8%)	24 (77.4%)
Complications
Coronary heart disease	2 (9.1%)	3 (9.7%)	0.662
Arrhythmia	3 (13.6%)	6 (19.4%)	0.437
COPD	4 (18.2%)	3 (9.7%)	0.309
Hypertension	8 (36.4%)	13 (41.9%)	0.123
FEV1 ≤ 2.0 L	4 (18.2%)	5 (16.1%)	0.563
Pa O2 ≤ 80.0	2 (9.1%)	2 (6.5%)	0.555
Tumor location
RUL	14	17
RML	2	4
RLL	6	10
Pathologic types
Adenocarcinoma	21	28
Squamous carcinoma	1	3
Duration of operation(min, mean ± SD)	201.6 ± 49.6	186.7 ± 40.2	0.146
Blood loss(ml, mean ± SD)	59.0 ± 25.7	58.0 ± 37.0	0.234
The highest postoperative pain score	2.8 ± 0.4	3.1 ± 0.2	0.476
Postoperative hospital stay (days)	5.2 ± 0.8	5.8 ± 0.6	0.083
Postoperative arrhythmias	3	13	0.032
Atrial fibrillation	1	3	0.486
Tachycardia	2	10	0.039

or ^#: , the t test or Mann-Whitney U test was used to evaluate differences in continuous variables between the two groups. Definition of abbreviations: SD: standard deviation; IQR: interquartile range; RUL: right upper lobe; RML: right middle lobe; RLL: right lower lobe. Tachycardia standard: In the nontherapeutic state, the heart rate was >100 twice a day.