Tips to make colonoscopy prep more bearable
At least once a month, a patient asks if I’ve read Dave Barry’s column about getting a colonoscopy. The humor writer discusses how fear kept him from getting the procedure until he was 60 – a decade after the recommended age to begin screening. After learning his brother had colon cancer, he finally scheduled an appointment and began his amusing journey into preparing for a colonoscopy.
Not everyone finds such humor in colonoscopy prep. Who wants to choke down a large amount of sometimes disgusting-tasting bowel-clearing liquid and then cope with the resulting diarrhea? Many find it more uncomfortable than the actual procedure, during which they’re usually sedated and don’t remember it.
Colonoscopies may eventually be replaced by less-invasive, less-preparation-intensive screening methods, but for now, they are the best way to protect yourself from colorectal cancer. So let’s look at how the colonoscopy prep process works and how you can make it a little less uncomfortable.
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How does colonoscopy prep work?
Colonoscopies detect colon and rectal cancers while they are still small and treatable, but they also are used to find and remove polyps, which are small growths that can develop into cancer. To see these growths, the doctor needs a clear view during the procedure. This requires emptying the colon of its contents.
If the colon isn’t completely clean, the danger is we may miss tumors or polyps. It also could lead to a longer colonoscopy because we need to spend more time washing away waste to see more clearly.
The preparation process may differ slightly between medical centers and doctors, or from patient to patient. You doctor will explain exactly what you should do. In general, the process involves a liquid diet and laxatives.
The form of laxatives can vary. We generally prescribe four liters of a generic lavage solution, which is cheap and easy to get. Four liters is a lot to drink. It’s the equivalent of nearly seven 20-ounce bottles of soda. Some patients can get away with drinking half of that if they take Dulcolax tablets first.
Many patients ask us about alternatives to this part of the prep: “I heard from a friend you can just take a pill.” This is sort of true, but it’s not one pill, it’s 32. And it has a “black box” warning – the strongest warning the Food and Drug Administration issues – for its risk to the kidneys. It’s also not recommended for people older than 65.
We sometimes use an off-label prep that’s basically MiraLAX dissolved in 64 ounces of Gatorade. It’s still a lot to drink, but it tastes better.
We ask that you do a split prep, which means you drink half the night before and the other half six hours before the procedure. I know this can be annoying if your procedure is at 8 a.m. and you need to get up at 1 or to finish the drink, but you’ll get a more thorough cleansing.
How to make your colonoscopy prep easier
I know this process isn’t fun. But it’s important, and there a few things you can do to make it a little easier:
- Listen to your doctor’s instructions: Take notes and ask questions if you don’t understand something.
- Arrange your schedule: You’ll want to be home – and in your own bathroom – during colonoscopy prep. If you have children, find someone to help care for them while you’re indisposed.
- Cut back on fiber a couple days beforehand: Fiber is the indigestible part of plant foods and leaves a high amount of residue in the colon. Stick to a low-fiber diet, and avoid foods such as:
- Raw fruits and vegetables
- Whole grains
- Maintain a liquid diet: Water gets boring pretty quickly. Have a few other options on hand.
- Clear broth
- Coffee or tea
- Italian ice
- Drink your prep: Some of these solutions don’t taste great, but as mentioned, it’s the most important part of the prep process.
- Add flavoring such as Crystal Light or Kool-Aid powder if the prep isn’t flavored.
- Drink it cold.
- Use a straw.
- Suck on a lemon or hard candy afterward.
- Prepare the bathroom: Once the prep solution starts working, you’ll want to stay close to a bathroom.
- Wear loose clothing.
- Stock up on soft toilet paper.
- Use skin-soothing products such as baby rash ointment.
- Keep entertainment handy; you may be there a while. This could include books, a laptop or a tablet.
Finally, remember that this screening could save your life. Excluding skin cancers, colorectal cancer is the third most common cancer diagnosed in the United States, with more than 101,000 cases expected to be diagnosed in 2019.
When should you be screened for colon cancer?
The American Cancer Society updated its colorectal cancer screening guideline in 2018, recommending people at average risk of colorectal cancer start regular screening at age 45, instead of starting at age 50. The updated guideline differs from the recommendation by the U.S. Preventive Services Task Force — released in June 2016 — which recommends that patients start at age 50.
However, your doctor may still recommend starting before age 50 or even before age 45, if you have factors that put you at increased risk, such as:
- Family history of colorectal cancer or polyps
- Personal history of colorectal cancer or polyps
- Personal history of chronic inflammatory bowel disease
- African-American descent
There are alternative screening methods, but colonoscopy is considered the gold standard for colorectal cancer screening. Don’t let the hassle and discomfort of colonoscopy prep keep you from getting this potentially life-saving procedure. Take it from Dave Barry: “If I can do it, you can do it. Don’t put it off. Just do it.”
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