“…Systematic reviews and RCTs have shown that adequate bowel preparation can improve the quality of visualization when used before CE. [147][148][149][150][151][152][153][154] A systematic review of 15 RCTs comparing bowel cleansing with no preparation other than a clear fluid diet, found that PEG (1, 2, or 4 L) before CE significantly increased the odds of adequate visualization (odds ratio, 3.13; 95% CI, 1.70-5.75; P ¼ .0002) and diagnostic yield (odds ratio, 1.68; 95% CI, 1.16-2.42; P ¼ .006). 147 Sodium phosphate improved the diagnostic yield (odds ratio, 1.77; 95% CI, 1.18-2.64; P ¼ .005), without affecting visualization quality.…”