Approximately one-third of colonoscopies with inadequate bowel preparation were repeated within 1 year despite current guidelines, according to data from a new study of more than 260,000 procedures.
Previous studies have shown that poor bowel prep, which occurs in approximately 25% of colonoscopies, can lead to lesion miss rates of as much as 42%-48%, Audrey H. Calderwood, MD, an associate professor of medicine at Dartmouth-Hitchcock Medical Center, Lebanon, N.H., and colleagues wrote. However, factors affecting recommendations for repeat colonoscopies following poor bowel prep have not been examined.