The Medical Letter on Drugs and Therapeutics
Colonoscopy Preparations
Subscribers: Log in to read full article.  Not a subscriber?  Subscribe or purchase article.

Colonoscopy remains the preferred method of colorectal cancer screening.1 Many patients consider cleansing the bowel in preparation for colonoscopy the most unpleasant part of the procedure, but inadequate bowel preparation significantly lowers the diagnostic yield.

POLYETHYLENE GLYCOL (PEG) SOLUTIONS — These isosmotic, non-absorbable electrolyte solutions should pass through the bowel with no net absorption or excretion of ions or water. Large volumes (up to 4L) must be ingested to produce a cathartic effect.

Because they are generally not absorbed, PEG electrolyte solutions are probably the safest choice for patients who cannot tolerate a fluid load, such as those with heart failure, renal insufficiency or ascites. They have a salty taste and the large volume of fluid can cause nausea, vomiting, abdominal fullness and cramping. Some patients are unable to finish drinking ... more      

The Medical Letter is a subscriber-funded nonprofit organization that publishes critical appraisals of new prescription drugs and comparative reviews of drugs for common diseases.

Would you like to read the rest of this article?  Gain access below.

Subscriptions to The Medical Letter on Drugs and Therapeutics include:
  • Print version published and mailed biweekly (26 issues/year)
  • Unlimited online access to current and past issues (1988 - present)
  • Mobile App for iOS, Android, and Kindle Fire
  • FREE online per issue CME/CE
Purchase this article:
Title: Colonoscopy Preparations
Article code: 1408b
 Electronic, downloadable article - $45
Gain access through your organization
Ask your librarian to consider an Institutional Subscription to The Medical Letter.
Recommend to your librarian