Choledochoscope manometry about different drugs on the Sphincter of Oddi

Table 2 Effects of H₂-receptor blocking pharmacon on SO pressure (mean ± SD)

	Famotidine (n = 20)			Cimetidine (n = 20)
	Before administration	10 min after administration	20 min after administration	Before administration	10 min after administration	20 min after administration
SOBP (mmHg)	9.63 ± 8.48	5.92 ± 4.41	4.97 ± 6.53	9.63 ± 8.16a	4.96 ± 4.43a	3.10 ± 3.16b
SOCA (mmHg)	96.21 ± 53.12	85.31 ± 59.48	78.18 ± 64.01	106.55 ± 73.58	79.24 ± 59.93	52.09 ± 37.11c
SOF (times/min)	9.82 ± 3.18	10.57 ± 3.88	8.35 ± 2.01	8.30 ± 2.84	10.57 ± 2.82	11.44 ± 4.39
CDBP (mmHg)	5.09 ± 7.74	5.63 ± 5.33	2.42 ± 5.28	6.54 ± 4.16	9.03 ± 9.53	5.87 ± 5.07

9.63 ± 8.16 vs 4.96 ± 4.43,

^aP < 0.05; 9.63 ± 8.16 vs 3.10 ± 3.16,

^bP < 0.01; 106.55 ± 73.58 vs 52.09 ± 37.11,

^cP < 0.01.