Gastroduodenal ulcer treated by pylorus and pyloric vagus-preservinggastrectomy

Table 1 Basic acid output before and after operation (^-x±s, mmol/L)

Operation mode	n	Preoperation	Postoperation
PPVPG	64	7.75 ± 2.43	2.29 ± 1.25b
B I	24	7.51 ± 2.76	2.16 ± 1.28b
B II	20	7.21 ± 2.58	2.06 ± 1.23b

^bP < 0.01, vs preoperation.

Table 2 Maximal acid output before and after operation (^-x±s, mmol/L)

Operation mode	n	Preoperation	Postoperation
PPVPG	64	66.23 ± 13.76	15.68 ± 5.53b
B I	24	67.21 ± 20.23	15.96 ± 10.32b
B II	20	66.18 ± 7.19	16.15 ± 11.04b

^bP < 0.01, vs preoperation.

Table 3 Serum gastrin concentration before and after operation (^-x±s, ng/g)

Operation mode	n	Preoperation	Postoperation
PPVPG	64	284.9 ± 52.5	129.5 ± 11.3b
B I	24	299.2 ± 45.0	124.8 ± 18.0b
B II	20	260.0 ± 64.3	136.8 ± 46.8b

^bP < 0.01, vs preoperation.

Table 4 Duodenogastric reflux (n)

Operation mode n		Reflux indexes grades (%)
		I < 5%	II -10%	III -20%	IV -30%	V -40%	VI > 40%	Total	%
PPVPG	84	6	0	0	0	0	0	6	7.1
B I	24	0	6	7	5	5	0	23	95.8
B II	20	0	0	5	6	4	5	20	100.0

Significantly different from groups PPVPG and B I and B II (P < 0.005, χ² = 99.6608). No marked difference between groups B I and B II (P > 0.05, χ² = 0.8536).