Factors Influencing the Adequacy of Bowel Preparation in Patients With Developmental Disabilities

Jose Mari Parungao, Charina Reyes, Nancy Jackson, Nancy Roizen, Michael Piper


Background: The rate of inadequate bowel preparation in the general population is approximately 23%. As more individuals with developmental disabilities enter late adulthood, a concomitant rise in endoscopic procedures for this population, including screening colonoscopies, is anticipated. However, there are sparse data on the adequacy of bowel preparation in patients with developmental disabilities.

Methods: A retrospective analysis of 91 patients with developmental disabilities who underwent colonoscopy from 2006 to 2014 was performed. Bowel preparation adequacy from these procedures was evaluated, together with other data, including age, developmental disability diagnoses, procedure type, indication and setting.

Results: Mean age at the time of endoscopy was 52.6 13.4 years, with an age range of 18 - 74 years. Inadequate bowel preparation was found in approximately 51% of documented cases. Outpatients were more likely to have adequate bowel preparation compared to inpatients, with an odds ratio of 2.75 (95% confidence interval: 1.14 - 6.62, P = 0.022). No other major factors identified had any statistically significant influence on the adequacy of bowel preparation.

Conclusion: Over half of patients with developmental disabilities undergoing colonoscopy had inadequate bowel preparations in our study, which is more than twice the rate for the general population. Furthermore, outpatients were 2.75 times more likely to have adequate bowel preparation compared to inpatients. Further studies are recommended to improve endoscopic practices for this patient population.

Gastroenterol Res. 2018;11(6):416-421
doi: https://doi.org/10.14740/gr1118


Developmental disability; Endoscopy; Bowel preparation

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