Study of celiac artery variations and related surgical techniques in gastric cancer

Table 5 Comparison of observations between ultrasonic harmonic scalpel subgroup and electrical unit subgroup among no vascular variation population

Observation	Ultrasonic harmonic scalpel group	Electrical unit subgroup	t value	P value
Cases (persons)	81	77
Operation duration (min)	188.4 ± 25.4	220.4 ± 28.3	7.481	0.000
Intraoperative blood loss (mL)	168.1 ± 49.6	158.0 ± 55.3	1.210	0.228
Total number of lymph nodes dissected	23.3 ± 7.9	19.2 ± 8.6	3.085	0.002
Time required for postoperative recovery of bowel function (d)	3.3 ± 1.1	3.1 ± 0.9	1.359	0.176
Time to ambulation (d)	4.4 ± 1.0	4.2 ± 1.0	1.330	0.185
Postoperative hospitalization (d)	7.3 ± 1.5	7.9 ± 1.2	1.251	0.132
Mean drainage amount in 3 d after operation (mL)	191.3 ± 37.0	187.7 ± 30.0	2.349	0.080
Total hospitalization cost (RMB)	35917.6 ± 2741.6	36186.9 ± 2717.3	1.016	0.161