Internal MedicineGastroenterology
Colonoscopy
Colonoscopy
Colonoscopy, or electronic fiber colonoscopy, is a method of examining the inside of the lower digestive tract. A thin, flexible tube with a video camera at the tip is inserted through the anus, advanced retrograde into the rectum, and then upward to the terminal ileum.
During the examination, the doctor can clearly visualize the internal conditions of the anal canal, rectum, sigmoid colon, colon, ileocecal region, and terminal ileum, identify abnormal mucosal manifestations, and record images of various areas according to standard operating procedures. If necessary, a tissue sample can also be taken for pathological examination to determine the nature of the lesion.
Indications
The following individuals require a colonoscopy:
Unexplained lower gastrointestinal bleeding, chronic diarrhea, abnormal bowel movements, or low intestinal obstruction.
Abnormal barium enema findings or unclear nature of lesions found during sigmoidoscopy.
Abdominal masses requiring exclusion of large bowel or terminal ileum diseases.
Colonic polyps, tumors with bleeding, or other lesions requiring endoscopic treatment.
Patients who have undergone colon surgery or colonoscopic treatment and require regular follow-up colonoscopies.
Screening for large bowel diseases.
Differences between Painless Colonoscopy and Conventional Colonoscopy
Painless Colonoscopy
During the examination, the patient is sedated and analgesized intravenously, losing consciousness and entering a state of general anesthesia before the procedure.
The advantage is that the patient experiences no discomfort and has good comfort.
The disadvantages are the need for general anesthesia, which carries higher anesthetic risks for some patients with poor cardiopulmonary function, those with coughing and purulent sputum, and other special conditions, and the cost is higher.
Conventional Colonoscopy
No anesthesia is administered during the examination.
The advantages are lower cost and no anesthesia-related risks.
The disadvantages are discomfort during insertion, which can easily cause intestinal spasms and pain. Patients who cannot tolerate it often lead to examination failure.
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