PHILADELPHIA — according to a study presented at the annual meeting of the American College of Gastroenterology (ACG).
Patients who received MoviPrep (2L of polyethylene glycol and ascorbic acid) reported higher tolerability and willingness to repeat colonoscopy preparation in the future than those taking GoLYTELY (4L of polyethylene glycol and electrolytes). In addition, the rates of electrolyte abnormalities and acute kidney injury were low and similar between the two groups.
Yale School of Medicine
Dr. Karen Xiao
“Bowel preparation remains a challenge in the inpatient setting, where 20%-50% of all colonoscopies can have inadequate bowel preparation,” said lead author Karen Xiao, MD, assistant professor in the section of digestive diseases at Yale School of Medicine, New Haven, Connecticut.
Previous studies have indicated that low-volume (2L), split-dose preparations are noninferior to high-volume (4L), split-dose regimens, and patients generally prefer low-volume options, she said. However, the current standard of care for inpatients continues to include high-volume polyethylene glycol electrocyte lavage, which may be less tolerable.
“Similar to prior studies, our study supports that MoviPrep may be a suitable alternative to traditional high-volume bowel preparation in hospitalized patients undergoing colonoscopy,” she said.
In a single-blind, multi-site, randomized controlled trial, Xiao and colleagues in the Yale–New Haven Health System randomly assigned inpatients undergoing colonoscopy to MoviPrep or GoLYTELY between January 2022 and July 2024. They excluded patients with prior small or large bowel resection, foreign body removal, or medical contraindications, such as obstruction, pregnancy, phenylketonuria, or glucose-6-phosphate dehydrogenase deficiency.
After bowel prep but before colonoscopy, patients took the Mayo Clinic Bowel Preparation survey. Colonoscopies were then recorded, and videos were scored by a single-blinded central reviewer. The primary outcome included the adequacy of bowel prep as defined by a Boston Bowel Preparation Scale score of 6 or higher, with each segment scoring 2 or higher.
In the final analysis, 202 patients received MoviPrep and 210 received GoLYTELY. In both groups, the average age was 62; about 60% were men; and 66% were White, about 22% Black, and 13%-15% Hispanic. About 65% of patients in both arms had an American Society of Anesthesiologists (ASA) score of 3, with another 20% in each group having an ASA score of 4, “reflective of a sicker inpatient population,” Xiao said.
Inpatient colonoscopy was indicated for gastrointestinal bleeding (55%), diarrhea (15%-20%), abnormal imaging (10%-13%), inflammatory bowel disease (4%), or other (35%-41%). Patients could have more than one indication for colonoscopy.
Overall, bowel preparation was scored as adequate in 111 patients with MoviPrep (55%) and 111 patients with GoLYTELY (52.9%), and was inadequate in 91 patients with MoviPrep (45%) and 99 patients with GoLYTELY (47.1%). With a rate difference of 2.1% and a P value of .007, MoviPrep was considered noninferior to GoLYTELY for adequate bowel preparation.
In terms of secondary outcomes, there wasn’t a significant difference in the length of hospital stay, with a median stay of 6 days. Similarly, there were no differences in the rates of adverse events, including acute kidney injury and electrolyte abnormalities, with rates ranging from 1% to 9%. MoviPrep patients were slightly more likely to need additional bowel prep but also had a slightly shorter time to colonoscopy.