To avoid risks from anesthesia, painless colonoscopy uses conscious sedation instead of deep sedation. The purpose of conscious sedation is to reduce the examinee’s anxiety and make them feel calm so that they can cooperate with and complete the examination. Under moderate sedation, some examinees may remain conscious and could complain of physical discomfort. Before performing sedated painless colonoscopy, the Center's healthcare workers will assess the physical status of the examinee and the history of adverse drug reactions before sedation under the evaluation of an anesthesiology care team. During anesthesia, the examinee’s blood oxygen levels and heart rhythm are persisted monitored. After completion of the examination, the examinee would be transferred and rest in a well-equipped recovery room.

Please consider the following reasons:

1. If it is due to the excessive amount of liquid that needs to be consumed within the specified time, you may take up to two hours to slowly finish the solution.
2. If you choose to cleanse your bowels on the day of examination, please ensure that you have finished drinking the bowel cleansing solution before registration. The effect of bowel cleansing would be suboptimal if you failed to drink the 2000 c.c. solution completely. In this situation, the healthcare manager will assess your condition individually.
3. If you can't finish the bowel cleansing solution because of its foul taste, which make you feel nauseous, you could still receive other examination items. The healthcare manager will reschedule a colonoscopy for you. Before you redoing a colonoscopy (on a different day from the health examination day), you can cover up the foul taste of the bowel cleansing solution by adding some honey or lemon juice (after filtering the pulp) to it.

Examinees should adopt a low-fiber (low-residue) diet 3 days before the examination. The purpose of a low-residue diet is to reduce the residue left in the gastrointestinal tract after food is digested (including indigestible plant fiber, animal proteins, milk, etc.).
This kind of foods adopt cooking methods to soften the texture, such as simmering, poaching, stewing, etc. Frying and deep-frying foods should be avoided. The diet should consist of refined grains, filtered vegetable juices, or well-cooked tender meat.

Foods to avoid:

1. Dairy products
2. Old lettuce leaves and roots
3. Unfiltered (high fiber) juices
4. Nuts, such as cashews, peanuts, stone fruits, sesame seeds
5. Whole grains, such as rice bran, brown rice, corn, wheat, whole wheat bread
6. Unskinned meat and fish
7. Fried egg, soy egg
8. Chili, garlic

Foods allowed:

1. Refined grains, such as rice, noodles, and toast
2. Refined soy foods, such as soy milk, tofu, and soy milk pudding
3. Tender meat with the skin removed
4. Filtered vegetable and fruit juices

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We provide examinees with Niflec to help cleansing the bowels. We recommend you use the laxative from 3 a.m. onwards on the day of the examination. Dilute one sachet of Niflec in 2000 c.c. of warm plain water and take the first 1000 c.c. within 30 minutes (or one hour for those who find it difficult to drink it), and then take the remaining 1000 c.c. within the next hour.

The effect usually begins within an hour, and you will defecate yellowish watery stools within two to three hours. Once the stools become clear, you can receive the colonoscopy.

Examinees who have habitual constipation or whose stools is not yet clear should drink 2000 c.c. of water at most (no more than 4000 c.c. fluid amount in total) after they have finished taking the laxative.

If the bowels cleansing is not ideal even with the use of medications, our care manager will consider whether to administer a small dose of cleansing enema on the day of the examination.

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You are not required to control your diet if you only receiving a gastroscopy. Please remember to fast (drinking water is also not allowed) since 00:00 on the day of the examination.

Many people feel bloated after a colonoscopy because the physician must fill the bowels with gas for easier examination. At present, we has fully switched to using CO2, which can be absorbed by human body, thus effectively reducing abdominal distension and discomfort.

However, if abdominal distension and discomfort presence, we recommend you walking around to help expel the residual air from the bowels. Usually, the symptoms of discomfort will disappear before your complete all the examinations and leave. Please seek our assistance if the bloating persists with gradual deterioration or unresolved intensive pain.

If no polyps or lesions were detected during the colonoscopy, we recommend you undergo further colonoscopies every three to five years. However, if you have a family history of colorectal cancer or colorectal polyps were detected in the previous examination, we recommend regular follow-ups based on the risk and characteristics of the polyp(s) in order to facilitate early detection and treatment.

An endoscopic biopsy is currently the most accurate method of understanding the nature of lesions (benign or malignant) detected during endoscopy. It can be done alongside endoscopy and is not generally painful.

After having an endoscopic biopsy, we recommend adopting a bland diet (avoid foods that are high temperature, hot and spicy, or irritating) and avoiding strenuous exercise. Please seek our assistance if you experience discomfort or bloody stools after the biopsy.