What Happens During a Colonoscopy?
The colonoscopy is performed by a doctor experienced in the procedure and lasts approximately 30-60 minutes. Medications will be given into your vein to make you feel relaxed and drowsy. You will be asked to lie on your left side on the examining table. During a colonoscopy, the doctor uses a colonoscope, a long, flexible, tubular instrument about 1/2-inch in diameter that transmits an image of the lining of the colon so the doctor can examine it for any abnormalities. The colonoscope is inserted through the rectum and advanced to the other end of the large intestine.
The scope bends, so the doctor can move it around the curves of your colon. You may be asked to change position occasionally to help the doctor move the scope. The scope also blows air into your colon, which expands the colon and helps the doctor see more clearly.
You may feel mild cramping during the procedure. You can reduce the cramping by taking several slow, deep breaths during the procedure. When the doctor has finished, the colonoscope is slowly withdrawn while the lining of your bowel is carefully examined.
During the colonoscopy, if the doctor sees something that may be abnormal, small amounts of tissue can be removed for analysis (called a biopsy), and abnormal growths, or polyps, can be identified and removed. In many cases, colonoscopy allows accurate diagnosis and treatment without the need for a major operation.
What Happens During a Gastroscopy?
A gastroscopy often takes less than 15 minutes, although it may take longer if it's being used to treat a condition.It's usually carried out as an outpatient procedure, which means you won't have to spend the night in hospital.
Before the procedure, your throat will be numbed with a local anaesthetic spray. You can also choose to have a sedative, if you prefer. This means you will still be awake, but will be drowsy and have reduced awareness about what's happening.
The doctor carrying out the procedure will place the endoscope in the back of your mouth and ask you to swallow the first part of the tube. It will then be guided down your oesophagus and into your stomach.
The procedure shouldn't be painful, but it may be unpleasant or uncomfortable at times.
What Do I Need to Do Before a Colonoscopy/Gastroscopy?
Before a colonoscopy/gastroscopy, let your doctor know about any special medical conditions you have, including the following:
- Lung conditions
- Heart conditions
- Allergies to any medications
- If you have diabetes or take medications that may affect bloodclotting; adjustments to these medications may be required before the colonoscopy/gastroscopy.
Gastroscopy + Colonoscopy
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