Limited water infusion decreases pain during minimally sedated colonoscopy

Table 2 Outcomes of colonoscopy (mean ± SD) n (%)

	Air group(n = 89)	Water group(n = 90)	P value
No. of failed cecal intubations	1 (1.1)	1 (1.1)	1.0004
Cecal intubation time (min)	4.5 ± 2.4	6.4 ± 3.1	< 0.0013
Procedure time (min)	13.8 ± 5.6	14.5 ± 4.7	0.3333
Volume of water used (mL)	26.2 ± 39.4	322 ± 80.9	< 0.0013
Time of air insufflation during intubation (min)	4.5 ± 2.4	2.3 ± 2.6	< 0.0013
No. of cases requiring assistant-administered abdominal pressure	51 (57.3)	49 (54.4)	0.7644
No. of cases requiring change of position	24 (27.0)	17 (18.9)	0.2174
Patient pain score1	3.4 ± 2.8	2.5 ± 2.5	0.0213
No. of cases without pain	18 (20.2)	32 (35.6)	0.0304
Patient satisfaction score2	9.6 ± 0.8	9.6 ± 0.7	0.9803
No. of cases with polyps	52 (58.4)	44 (48.9)	0.2324
No. of cases with adenomas	31 (34.8)	32 (35.6)	1.0004

¹0 = no pain, 10 = worst pain imaginable;

²0 = not satisfied at all, 10 = completely satisfied;

³Student’s t-test;

⁴χ² test.