Flexible sigmoidoscopy is a routine outpatient procedure in which the inner lining of the lower large intestine is examined. If growths or polyps are found during the procedure, a biopsy may be taken, or you may be advised to have a complete colon exam or colonoscopy. Flexible sigmoidoscopy may be recommended to patients to evaluate gastrointestinal symptoms, such as abdominal pain, rectal bleeding or changes in bowel habits. It is also a screening method for colon and rectal cancer. You may or may not be sedated for this procedure.
What preparation is required?
Your doctor will tell you what cleansing routine to use. In general, preparation consists of one or two enemas prior to the procedure but could include laxatives or dietary modifications as well. However, in some circumstances your doctor might advise you to forgo any special preparation. Because the rectum and lower colon must be completely empty for the procedure to be accurate, it is important to follow your doctor’s instructions carefully.
Should I continue my current medications?
Most medications can be continued as usual. Inform your doctor about medications that you’re taking – particularly aspirin products or anticoagulants (blood thinners such as warfarin), or clopidogrel, as well as any allergies you have to medications.
What can I expect during flexible sigmoidoscopy?
Flexible sigmoidoscopy is usually well tolerated. You may or may not be sedated for this procedure. You might experience a feeling of pressure, bloating or cramping during the procedure. You will lie on your side while your doctor advances the sigmoidoscope through the rectum and colon. As your doctor withdraws the instrument, your doctor will carefully examine the lining of the intestine.
What if the flexible sigmoidoscopy finds something abnormal?
If your doctor sees an area that needs further evaluation, your doctor might take a biopsy (tissue sample) to be analyzed. Obtaining a biopsy does not cause any pain or discomfort. Biopsies are used to identify many conditions, and your doctor might perform one even if he or she doesn’t suspect cancer.
What happens after a flexible sigmoidoscopy?
Your doctor will explain the results to you when the procedure is done. You might feel bloating or some mild cramping because of the air that was passed into the colon during the examination. This will disappear quickly when you pass gas. You should be able to eat and resume your normal activities after leaving the facility, assuming you did not receive any sedative medication.
What are possible complications of flexible sigmoidoscopy?
Flexible sigmoidoscopy and biopsy are safe when performed by doctors who are specially trained and experienced in these endoscopic procedures. Complications are rare, but it is important for you to recognize early signs of possible complications. Contact your doctor if you notice severe abdominal pain, fevers and chills, or rectal bleeding. Note that rectal bleeding can occur several days after the exam.
Reference: http://www.asge.org/patients/patients.aspx?id=384
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