Synergic effect of erythromycin and CoAA on gallbladder contraction in patients with cholelithiasis

Table 1 Comparison of gallbladder volume and postprandial gallbladder emptying rate in three groups with gallstone disease (x^-± s)

	Group	n	FGV, cm3	Minimum volume after injection, cm3	PGER, %	Peak time
	1	12	28.55 ± 4.98	26.83 ± 5.12	6.21 ± 3.56
1st day	2	12	27.54 ± 4.47	16.28 ± 3.05	40.52 ± 6.84a	40th min
	3	12	33.55 ± 6.52	22.40 ± 4.83	34.47 ± 4.54b
2nd day	All	36	30.49 ± 3.45	13.91 ± 1.81	54.17 ± 5.35c	20th min

Group 2 vs group 1 on the first day (^aP < 0.05); Group 3 vs groups 1 and 2 on the first day (^bP < 0.01); All cases on the second day vs group 2 on the first day (^cP < 0.05). FGV: Fasting gallbladder volume; PGER: Postprandial gallbladder emptying rate.