First Colonoscopy? What to Expect Before, During and After
If you are preparing for your first colonoscopy, it is normal to have questions about the preparation, sedation, procedure and recovery. Knowing what will happen at each stage can make the experience feel much more manageable.
A colonoscopy allows a gastroenterologist to examine the lining of the rectum and colon using a thin, flexible tube with a small camera. It may be recommended to screen for colorectal cancer, remove polyps or investigate symptoms such as rectal bleeding, ongoing changes in bowel habits, abdominal pain or unexplained weight loss.
Quick Answers for First-Time Patients
Will I be awake? Sedation or anesthesia is commonly used to keep patients comfortable. The exact type varies, so ask your care team what is planned for you.
Will I feel the procedure? Medication is given to reduce discomfort and awareness during the exam.
How long does it take? The procedure itself usually takes less than an hour, but you should plan additional time for check-in, preparation and recovery.
Can I drive home? No. If you receive sedation or anesthesia, you will need a responsible adult to take you home.
Can I eat afterward? Many patients can resume eating after the procedure, based on their physician’s instructions.
When will I receive results? Your physician may discuss visual findings that day. Biopsy or pathology results take longer.
Several Days Before Your Colonoscopy
Your physician will give you specific written instructions. Review them early rather than waiting until the day before your appointment. Preparation regimens vary, and your physician’s directions should always take priority over general advice found online.
Tell your care team about your medical conditions, allergies, and every prescription medication, over-the-counter medicine, vitamin and supplement you take. Some patients need individualized directions for blood thinners, diabetes medications, iron supplements or other medicines. Do not stop a prescribed medication unless your physician tells you to do so.
You may also be asked to avoid high-fiber foods, nuts, seeds, corn, popcorn and raw vegetables for a period before the procedure. Follow the exact food list and timeline your physician provides.
The Day Before Your Colonoscopy
Most patients follow a clear-liquid diet and take a prescribed bowel preparation. The preparation empties the colon so the physician can clearly examine its lining. If stool remains in the colon, small abnormalities can be harder to see and the procedure may need to be repeated.
Clear liquids may include water, clear broth, pulp-free apple or white grape juice, certain sports drinks, plain tea or coffee without milk or cream, and permitted gelatin or ice pops. Your instructions may tell you to avoid red, blue or purple products. A clear liquid is something you can see through; milk, smoothies and cloudy juices do not qualify.
The bowel preparation causes frequent, watery bowel movements. Stay close to a bathroom once it begins. Drink the allowed fluids listed in your instructions to help stay hydrated. If you vomit, cannot finish the preparation or are unsure whether it is working, call your physician’s office for guidance rather than changing the schedule yourself.
What Happens When You Arrive?
After check-in, a member of the care team will review your medical history, medications and preparation. You will change into a medical gown. An intravenous line, commonly called an IV, is typically placed so medication can be given.
Before the procedure begins, you will have an opportunity to ask questions. Your team will explain the sedation plan and monitor you throughout the procedure.
What Happens During a Colonoscopy?
You will usually lie on your side. Once you are appropriately sedated, the gastroenterologist will guide the colonoscope through the rectum and colon. The camera sends images to a monitor so the physician can carefully examine the lining.
Air or carbon dioxide may be used to gently expand the colon for a clearer view. If the physician sees a polyp, it can often be removed during the same procedure. Small samples of abnormal-looking tissue may also be taken for testing. Patients do not typically feel a biopsy or polyp removal.
What Happens in Recovery?
After the procedure, you will rest in a recovery area while the sedation wears off. Temporary bloating, gas or mild cramping can occur. The physician may discuss initial findings with you, although you may not remember every detail because of the sedative. It can help to have your accompanying adult listen to the discharge instructions as well.
You cannot drive yourself home after sedation. Follow the discharge instructions regarding eating, activity, work and medications. Many patients feel back to normal by the following day, but individual instructions may differ.
When Will You Get Your Results?
Your physician may be able to share what was seen immediately after the colonoscopy. If a polyp was removed or a biopsy was taken, the sample is sent to a laboratory. Pathology results may take several days or longer. Your care team will explain how and when you will receive them and whether follow-up is needed.
When Should You Call a Doctor After a Colonoscopy?
Your discharge paperwork will explain which symptoms require a call. Seek prompt medical attention for severe or worsening abdominal pain, fever, dizziness, weakness, bleeding that does not stop, or bloody bowel movements that do not improve. A small amount of bleeding may occur after a biopsy or polyp removal, but follow your physician’s guidance about what is expected in your situation.
Preparing for a Colonoscopy in Smithtown, NY
Smithtown Ambulatory Surgery Center provides physician-led outpatient colonoscopy and endoscopy care in Nesconset for patients from Smithtown and surrounding Long Island communities. If your gastroenterologist has recommended your first colonoscopy, carefully review the preparation provided by your physician and contact the care team with any questions before your appointment.
This article is for general educational purposes and is not a substitute for medical advice, diagnosis or treatment.