Abstract. Bowel preparation regimens for colon capsule endoscopy are not yet standardized since they are not well optimized. The aim of the present study was to evaluate the feasibility of a novel low-volume and sodium phosphate-free bowel preparation regimen for colon capsule endoscopy. A total of 31 patients were prospectively enrolled. In the novel regimen, on the day prior to examination, a low-fiber diet was permitted, 5 mg mosapride citrate was administered twice (1 h prior to lunch and supper) and 1 l polyethylene glycol was administered in the evening. On the day of the examination, an additional 1 l polyethylene glycol, 5 mg mosapride citrate and 200 mg simethicone were administered before capsule ingestion. Polyethylene glycol booster (0.5 l) was administered twice, at 1 and 4 h following capsule ingestion. Colon cleansing levels, ileocecal valve transit time and completion rate were evaluated. A total of 29 patients were included in the final analysis, 90% of whom achieved adequate preparation of the overall colon. Ileocecal valve transit time was 2.35±0.82 h and completion rate was 79.3%. The results revealed that the novel low-volume and sodium phosphate-free bowel preparation regimen for colon capsule endoscopy was feasible, with adequate colon cleansing and completion rates, and has the potential to be used as an alternative regimen.
IntroductionColorectal cancer (CRC) is the second most common type of cancer in western countries and has exhibited an increasing incidence in many Asian countries in recent decades (1,2). A recent study demonstrated that screening for CRC in average-risk adults was effective in reducing the mortality rate (3). A satisfactory screening method for CRC must be safe, non-invasive, cost-effective, easily acceptable and possess a high diagnostic accuracy (4).The PillCam colon capsule endoscopy (CCE) may achieve direct visualization of the entire colon without sedation, radiation or air insufflation, which represents a non-invasive imaging system for exploring the colon (5). Although colonoscopy is currently considered to be the gold standard method for CRC screening and the diagnosis of most colonic diseases (4), the PillCam colon capsule endoscopy has been developed as the most promising approach to CRC screening in recent years, which is an alternative for patients with incomplete colonoscopy or who are reluctant to accept colonoscopy examination due to discomfort or embarrassment (6).The effectiveness of CCE partly depends on the cleanliness of the colon. An optimal bowel preparation regimen for CCE is required for a clean intestine, capsule propulsion and visualization of the whole large intestine. Previous studies have demonstrated bowel preparation regimens for CCE that generally consist of a split-dosage of polyethylene glycol (PEG) with the volume of 4 l, prokinetic agents and sodium phosphate (NaP) boosters (5,7-9). However, large volumes of laxatives may reduce patient compliance. Furthermore, NaP is associated with certain adverse events, such as electrolyte dis...