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.