What to Expect During a Colonoscopy in Singapore: Procedure, Preparation & Recovery

 

A colonoscopy is one of the most important screening tests used to detect colon cancer, polyps, bleeding, and other digestive conditions. In Singapore, where colorectal cancer is one of the most common cancers among both men and women, timely colonoscopy screening can save lives by identifying problems early—often before symptoms appear.

Whether your doctor has recommended a colonoscopy or you are considering one for preventive health, understanding what happens before, during, and after the procedure can help reduce anxiety and ensure a smooth and comfortable experience. This guide explains what to expect at every stage of your colonoscopy journey in Singapore.

Why You May Need a Colonoscopy

A colonoscopy involves examining the inner lining of your large intestine (colon) using a thin, flexible tube with a camera. Doctors recommend it for several reasons:

• Routine screening for colon cancer (usually from age 45 onward)
• Family history of colorectal cancer or polyps
• Symptoms such as rectal bleeding, persistent abdominal pain, anaemia, or changes in bowel habits
• Monitoring inflammatory bowel diseases (Crohn’s disease or ulcerative colitis)

Because Singapore has high rates of colorectal cancer, regular screening is highly recommended for early detection.

How to Prepare for a Colonoscopy

Proper preparation is crucial because your colon must be clean for doctors to see clearly during the procedure. A poorly prepared colon may require the procedure to be repeated, so following instructions carefully is essential.

1. Dietary Adjustments (1–3 Days Before)

Your doctor will usually recommend:

• Avoiding high-fibre foods such as fruits, vegetables, nuts, and seeds
• Switching to a low-residue or soft diet
• Consuming clear liquids like soup, tea, and electrolyte drinks the day before the procedure

2. Bowel Preparation (Laxatives)

The most important part of preparation is the bowel cleanse. You will be asked to drink a prescribed laxative solution that flushes out your colon. Common options include:

• PEG (polyethylene glycol) solutions
• Sodium picosulfate
• Split-dose preparations (half the night before, half in the morning)

Expect frequent visits to the toilet—this is normal and necessary.

3. Medication Review

Inform your doctor if you:

• Take blood thinners
• Are diabetic
• Have kidney or heart conditions
• Take iron supplements

Your medication schedule may need temporary adjustments.

4. Arrange Transportation

Because you will receive sedation, you will not be allowed to drive after the procedure. Arrange for a friend or family member to take you home.

What Happens During a Colonoscopy in Singapore

Colonoscopy procedures in Singapore are carried out in hospitals or specialist endoscopy centres. They are typically painless due to sedation.

1. Registration & Pre-Procedure Briefing

Upon arrival, nurses will:

• Check vital signs
• Review your medical history
• Explain the procedure
• Insert an IV line for sedation

You will change into a hospital gown and wait in a comfortable preparation area.

2. Sedation

Most patients receive conscious sedation or deep sedation using medications like propofol. This ensures:

• No pain
• Little to no memory of the procedure
• Relaxation and comfort throughout

Some centres also offer general anaesthesia depending on the patient’s needs.

3. The Procedure Itself

Once sedated, the doctor inserts a colonoscope through the rectum and gently advances it through the colon. The camera sends high-definition video to a monitor.

The doctor looks for:

• Polyps (small growths)
• Bleeding
• Inflamed tissue
• Abnormalities

If polyps are found, they can be removed immediately using special tools. Tissue samples (biopsies) can also be taken without pain.

How Long Does It Take?

Most colonoscopies take 20–45 minutes, depending on your colon and whether polyps are removed.

Recovery After a Colonoscopy

After the procedure, you will be monitored in a recovery room until the sedation wears off.

1. Post-Procedure Monitoring

Nurses check:

• Blood pressure
• Heart rate
• Level of alertness

You may feel mild gas, bloating, or cramping because air was introduced into the colon during the procedure. This usually improves within a few hours.

2. Eating & Drinking

Most patients can resume normal meals the same day. Start with light foods if your stomach feels sensitive.

3. Returning Home

Because sedation affects reflexes and judgment, you should:

• Avoid driving for 24 hours
• Avoid signing legal documents
• Get plenty of rest

4. Understanding Your Results

Results may be given immediately or during your follow-up appointment. If the doctor removed polyps or took biopsies, the laboratory report may take a few days.

5. When to Seek Medical Help

Contact your doctor if you experience:

• Persistent abdominal pain
• Fever
• Heavy bleeding
• Dizziness or fainting

These symptoms are rare but require prompt attention.

How Often You Need a Colonoscopy in Singapore

Your screening interval depends on your results and risk factors:

• Normal results: Every 5–10 years
• Polyps found: Every 3–5 years
• High-risk family history: Every 1–3 years
• Inflammatory bowel disease: As recommended by your specialist

Early detection is key, especially in a country like Singapore where colorectal cancer remains a top health concern.

Choosing a Colonoscopy Specialist in Singapore

When selecting a specialist or centre, consider:

• Experience of the gastroenterologist
• Technology used (HD, narrow band imaging, advanced scopes)
• Availability of sedation options
• Transparent pricing
• Post-procedure support

Both public hospitals and private clinics offer high-quality colonoscopy services.

Final Thoughts

A colonoscopy is one of the most effective and reliable tools for detecting colorectal cancer and digestive disorders early. With proper preparation, sedation, and expert care, the procedure is safe, painless, and straightforward.

If you’re experiencing symptoms such as bleeding, persistent abdominal pain, or changes in bowel habits—or if you’re over 45—it may be time to schedule a colonoscopy in Singapore. Early screening protects your health and gives you peace of mind.