Preparing for your procedure

Proper preparation is essential for a safe and successful procedure. This guide provides general information about preparing for gastroscopy and colonoscopy. Dr Selvanderan's rooms will provide you with detailed, personalised instructions when you book your appointment.

Colonoscopy Preparation

Thorough bowel preparation is crucial for a successful colonoscopy. A clean bowel allows Dr Selvanderan to see the bowel lining clearly and detect any abnormalities.

Diet preparation (2 days before)

Two days before your procedure:

  • Switch to a low-residue diet

  • Avoid high-fibre foods including wholegrain bread and cereals, nuts, seeds, raw vegetables, fruit with skin or seeds, tough meat, and brown rice

  • Suitable foods include white bread, plain pasta or rice, well-cooked vegetables without skin, lean meat, fish, eggs, dairy products, and clear soups

One day before your procedure:

  • Consume only clear liquids from the morning onwards

  • Suitable clear liquids include water, clear broth or stock, black tea or coffee (no milk), clear fruit juice (apple, white grape—no pulp), sports drinks, jelly (not red or purple), and icy poles (not red or purple)

  • Avoid red, purple or blue coloured drinks as they can be mistaken for blood

  • Stay well hydrated—drink plenty of clear fluids throughout the day

Bowel preparation solution

Instructions:

  • You will be provided with a bowel preparation solution (such as Picosalax, Prepkit-C, Glycoprep, Plenvu or similar)

  • Dr Selvanderan's rooms will specify which preparation to use and provide detailed instructions

  • The preparation typically involves drinking the solution over several hours, usually starting the afternoon before your procedure

  • The solution will cause frequent, watery bowel motions

  • Stay close to a bathroom once you start the preparation

  • The bowel motions should become clear or pale yellow by the end of preparation

Signs of good bowel preparation:

  • Your bowel motions should be clear or pale yellow, like urine

  • There should be no solid matter or dark-coloured liquid

  • If your preparation is not adequate, the procedure may need to be rescheduled

Tips for tolerating the preparation:

  • Chill the solution—it's easier to drink cold

  • Drink through a straw

  • Suck on a lemon or lime wedge between glasses

  • Take small breaks if needed, but complete the full preparation

  • Continue drinking clear fluids even after finishing the preparation solution

Medications

  • Most regular medications can be continued

  • Blood thinners may need to be stopped—follow the specific instructions from Dr Selvanderan's team

  • Iron supplements should be stopped 5-7 days before the procedure as they can stain the bowel

  • Diabetic medications will need adjustment—discuss this with our team

  • Take any regular medications on the morning of the procedure with a small sip of water (at least 2 hours before arrival)

What to bring

  • Your referral letter

  • Medicare card and private health insurance details

  • List of current medications and allergies

  • Any previous colonoscopy reports

  • A responsible adult to drive you home

On the day of your Colonoscopy

  • Do not eat any solid food on the day of your procedure

  • You may drink clear fluids up to 2 hours before your arrival time

  • Arrive at the designated time

  • Wear comfortable, loose-fitting clothing

  • You will be asked to change into a hospital gown

  • You cannot drive for 24 hours after sedation

When to contact us:

  • If you experience severe abdominal pain or bloating during preparation

  • If you vomit repeatedly and cannot keep down the preparation

  • If you have concerns about your preparation quality

  • If you're unsure about any aspect of the preparation

Gastroscopy Preparation

Before your procedure

Fasting requirements:

  • You must not eat or drink anything (including water) for at least 6 hours before your gastroscopy

  • If your procedure is in the afternoon, you may have a light breakfast (toast, cereal) before 7am, then nothing else

  • Do not chew gum or suck on lollies during your fasting period

Medications:

  • Continue most regular medications as normal with a small sip of water

  • Blood thinners such as warfarin, clopidogrel (Plavix), or newer anticoagulants may need to be stopped or adjusted—Dr Selvanderan's team will provide specific instructions

  • If you have diabetes, you may need to adjust your insulin or diabetes medications—please discuss this with our team

  • Bring a list of all your current medications to your appointment

What to bring:

  • Your referral letter from your doctor

  • Medicare card and any private health insurance details

  • List of current medications and allergies

  • Any previous endoscopy reports or relevant test results

  • A responsible adult to drive you home

On the day of your Gastroscopy

  • Arrive at the designated time (usually 30-60 minutes before your procedure)

  • Wear comfortable, loose-fitting clothing

  • Leave valuables at home

  • Remove contact lenses before the procedure

  • You will be asked to change into a hospital gown

Important reminders

  • You cannot drive for 24 hours after sedation

  • You must have a responsible adult accompany you home

  • Plan to take the rest of the day off work

  • Do not operate machinery, sign legal documents, or make important decisions for 24 hours after sedation

General Information for Both Procedures

After your procedure

Recovery:

  • You will rest in a recovery area for 30-60 minutes while the sedation wears off

  • A nurse will monitor you until you're ready to go home

  • Dr Selvanderan will discuss the findings with you before you leave, though you may not remember this conversation due to sedation

  • You will receive a written report to take home

Going home:

  • You must be collected by a responsible adult

  • Do not drive, operate machinery, drink alcohol, or make important decisions for 24 hours

  • Rest for the remainder of the day

  • Most patients can return to normal activities the next day

Eating after your procedure:

  • After gastroscopy: You can eat and drink once any throat numbness has worn off (usually about an hour)

  • After colonoscopy: Start with light foods and build up to your normal diet as tolerated

When to seek medical attention

Contact Dr Selvanderan's rooms or seek medical attention if you experience:

  • Severe or worsening abdominal pain

  • Persistent vomiting

  • Fever or chills

  • Significant rectal bleeding (more than a small amount)

  • Chest pain or difficulty breathing

  • Any other concerning symptoms

Questions or concerns?

If you have any questions about your procedure preparation, please contact Dr Selvanderan's rooms. Our team is here to ensure you're fully prepared and comfortable with the process.

Important: This is general information only. You will receive specific preparation instructions for your individual procedure. Please follow those instructions carefully. If there is any conflict between this general information and your specific instructions, follow the specific instructions provided by Dr Selvanderan's team.

Bowel Prep Melbourne Gastroenterology Endoscopy Dr Shane Selvanderan

Comprehensive Gastroenterology & Endoscopy in Melbourne

Expert digestive and liver health consultation and advanced endoscopic procedures.

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