Randomized Study Comparing Two Regimens of Oral Sodium Phosphates Solution Versus Low-Dose Polyethylene Glycol and Bisacodyl
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Purpose Low-volume bowel preparation regimens for colonoscopy are reported to improve patient acceptance and compliance. We sought to compare the bowel cleansing efficacy, tolerability, and acceptability of three low-volume regimens: an oral sodium phosphates solution 45/45 ml (NaP-45/45), a reduced-dose oral sodium phosphates solution 45/30 ml (NaP-45/30), and polyethylene glycol plus bisacodyl (PEG-2L). Results A total of 121 patients were evaluated (mean age 55.2 ± 8.9 years). Bowel cleansings rated as excellent and good were significantly different among the groups: NaP-45/45 = 98%, NaP-45/30 = 88%, and PEG-2L = 76% (P < 0.04). Side effects were not significantly different except for greater thirst in the NaP-45/45 group (P = 0.001) and increased vomiting in females using PEG-2L (two-tailed interaction, P < 0.10). Willingness to retake the preparation was higher among the sodium phosphates regimens (88, 95, and 73%, respectively; P = 0.019). Conclusions Better cleansing and willingness to retake the regimen was achieved with the oral sodium phosphates solutions than with polyethylene glycol plus bisacodyl.
KeywordsBowel preparation Colonoscopy Polyethylene glycol Sodium phosphates
This study was sponsored by C.B. Fleet Co. Dr. Malik was the PI for this study. Dr. Balaban is a medical consultant for C.B. Fleet Co., and has received speaker honoraria and research support from C.B. Fleet Company. Dr. Thompson is a consulting biostatistician for C.B. Fleet Co. Deborah JB Galt is a medical writer employed in the Medical Affairs Department at C.B. Fleet Co.
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