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.
1 Follow a special diet the day before the exam. 2  Typically, you won't be able to eat solid food the day before the exam. 3  Drinks may be limited to clear liquids â plain water, tea and coffee without milk or cream, broth, and carbonated beverages. 4  Avoid red liquids, which can be confused with blood during the colonoscopy.