Brief Article
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World J Gastroenterol. May 7, 2011; 17(17): 2236-2240
Published online May 7, 2011. doi: 10.3748/wjg.v17.i17.2236
Limited water infusion decreases pain during minimally sedated colonoscopy
Yu-Hsi Hsieh, Hwai-Jeng Lin, Kuo-Chih Tseng
Yu-Hsi Hsieh, Kuo-Chih Tseng, Division of Gastroenterology, Department of Medicine, Buddhist Dalin Tzu Chi General Hospital, 622 Chia-Yi, Taiwan, China
Yu-Hsi Hsieh, Kuo-Chih Tseng, Buddhist Tzu Chi University, School of Medicine, 970 Hwalien, Taiwan, China
Hwai-Jeng Lin, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University Hospital, 110 Taipei, Taiwan, China
Hwai-Jeng Lin, School of Medicine, Taipei Medical University, 110 Taipei, Taiwan, China
Author contributions: Hsieh YH and Lin HJ contributed equally to this work; Hsieh YH designed the research; Hsieh YH and Tseng KC performed the research; Hsieh YH analyzed the data; Hsieh YH and Lin HJ wrote the paper.
Supported by Research funds from Buddhist Dalin Tzu Chi General Hospital
Correspondence to: Dr. Yu-Hsi Hsieh, Division of Gastroenterology, Department of Medicine, Buddhist Dalin Tzu Chi General Hospital, 2 Min-Sheng Road, Dalin, 622 Chia-Yi, Taiwan, China. hsieh.yuhsi@msa.hinet.net
Telephone: +886-5-2648000 Fax: +886-5-2648006
Received: September 25, 2010
Revised: January 10, 2011
Accepted: January 17, 2011
Published online: May 7, 2011
Abstract

AIM: To investigate a limited water infusion method in colonoscopy.

METHODS: Consecutive patients undergoing minimally sedated colonoscopy were randomized to receive air insufflation (n = 89) or water infusion limited to the rectum, sigmoid colon and descending colon (n = 90). Completion rates, cecal intubation times, procedure times, need for abdominal compression, turning of patients and levels of discomfort were evaluated.

RESULTS: Completion rates, total procedure times, need for abdominal compression, and turning of patients were similar between groups. Less pain was experienced in the water group than in the air group (2.5 ± 2.5 vs 3.4 ± 2.8, mean ± SD, P = 0.021). The cecal intubation time was significantly longer in the water group than in the air group (6.4 ± 3.1 min vs 4.5 ± 2.4 min, P < 0.001). More water was infused in the water group (322 ± 80.9 mL vs 26.2 ± 39.4 mL, P < 0.001).

CONCLUSION: Limited airless water infusion in the distal colon reduces patients’ pain during colonoscopy.

Keywords: Water; Pain; Colonoscopy; Looping; Intubation time