Colonoscopy Bowel Preparation Amount

A 65-year-old female patient is scheduled for a routine colonoscopy to screen for colorectal cancer. As part of the pre-procedure care, the nurse must provide education regarding the preparation required for this diagnostic test.

One important aspect of the preparation is the need to clear the bowel. The patient is instructed to consume a clear liquid diet for 24 hours prior to the procedure and to take a prescribed laxative the evening before. Patients should also avoid any solid foods.

Fill in the blank to complete the statement: "The patient should begin taking the bowel preparation as directed, which typically includes a __________ of polyethylene glycol (PEG) solution to ensure effective bowel cleansing."