Effect of two surgical approaches on the lung function and prognosis of patients with combined esophagogastric cancer

Table 1 Comparison of operation time between two groups of patients

Group	n	Operation time (min)	Bleeding volume (mL)	Positive rate of cutting edge (%)	Postoperative drainage time (d)	Postoperative landing time (h)	Length of stay (d)
A group	70	168.1 ± 15.7	136.8 ± 36.1	1 (1.43)	3.71 ± 0.84	27.81 ± 7.51	12.30 ± 2.13
B group	68	188.0 ± 19.3	188.2 ± 43.7	3 (4.41)	4.40 ± 1.22	29.40 ± 7.82	13.54 ± 2.35
t/χ2		-6.653	-7.542	1.091	-3.879	-1.218	-3.250
P value		0.000	0.000	0.296	0.000	0.225	0.001

Table 2 Comparison of lymph node dissection effect between two groups of patients (mean ± SD, number)

Group	n	Number of lymph nodes cleaned	Number of positive lymph nodes	Inferior mediastinal lymph nodes	Subphrenic lymph node	Number of abdominal lymph nodes
A group	70	33.87 ± 3.82	3.65 ± 1.20	3.81 ± 1.20	2.56 ± 0.72	27.50 ± 2.95
B group	68	34.33 ± 2.90	3.92 ± 1.53	4.03 ± 1.15	2.74 ± 0.75	27.56 ± 3.02
t value		-0.795	-1.155	-1.099	-1.438	-0.118
P value		0.428	0.250	0.274	0.153	0.906

Table 3 Comparison of pulmonary function parameters between two groups of patients (mean ± SD)

Group	n	Preoperative	1 mo after operation	t value	P value	Preoperative	1 mo after operation	t value	P value
		FEV1 (%)				MVV (%)
A group	70	95.66 ± 8.64	90.21 ± 8.50	3.734	0.000	98.16 ± 9.26	93.48 ± 9.11	2.992	0.003
B group	68	97.03 ± 8.11	86.30 ± 7.76	7.937	0.000	96.32 ± 8.58	88.75 ± 8.36	5.248	0.000
t value		-0.960	2.820			1.210	3.175
P value		0.339	0.006			0.228	0.002
		FVC (%)				VC (%)
A group	70	97.34 ± 8.14	92.36 ± 6.06	4.067	0.000	93.06 ± 4.85	90.01 ± 4.43	3.854	0.000
B group	68	99.03 ± 7.93	89.51 ± 7.24	7.359	0.000	94.41 ± 5.00	88.26 ± 5.25	7.048	0.000
t value		-1.235	2.510			-1.610	2.119
P value		0.219	0.013			0.11	0.036

FEV1: First second; MVV: Maximum ventilation volume; FVC: Forceful lung volume; VC: Lung volume.

Table 4 Comparison of quality of life scores between the two groups (mean ± SD, scores)

Group	n	Preoperative	3 mo after operation	t value	P value
A group	70	31.83 ± 6.60	43.09 ± 5.57	-10.816	0.000
B group	68	30.50 ± 5.78	40.14 ± 5.42	-10.100	0.000
t value		1.258	3.152
P value		0.211	0.002

Table 5 Comparison of complication rates between the two groups

Group	n	Pulmonary infection	Abdominal infection	Anastomotic fistula	Pyothorax	Incision infection	Pleural effusion	Complication rate (%)
A group	70	1	2	1	0	1	2	7 (10.00)
B group	68	7	0	3	2	1	3	16 (23.53)
χ2								4.546
P value								0.033

Table 6 Survival comparison

Group	n	Subsist	Die
A group	70	25 (35.71)	45 (64.29)
B group	68	20 (29.41)	48 (70.59)
χ2		0.623
P value		0.430