Researchers have measured the nuchal folds of thousands of babies between 11 and 14 weeks of pregnancy. Because a babyâs nuchal fold will normally get a bit thicker with each day of gestation, theyâve been able to establish what an average thickness is for each day during those three weeks.
The Day of the Procedure. You should not eat any food on the day of the procedure, and you shouldn't eat or drink anything between two or three hours before your colonoscopy. Once the procedure is finished, your doctor will give you instructions about resuming your normal diet.
What to Eat the Day Before Your Colonoscopy. While the change you make to your diet prior to a colonoscopy starts three or four days prior the procedure, on the day before, you need to switch to a clear liquid diet according to the National Digestive Diseases Information Clearinghouse.