Read this as soon as your date is confirmed. Some medication changes need to start up to a week before admission. If anything here is unclear, or conflicts with advice from another doctor, ring the rooms rather than guessing.
Your arrival time is not your fasting time — fasting is counted from your scheduled procedure time, which the hospital will confirm. If in doubt, follow the times written in the box above.
| What | Stop | Notes |
|---|---|---|
| Food, milk, lollies, chewing gum | 6 hours before | Including milk in tea or coffee. |
| Clear fluids | 2 hours before | Water, black tea or coffee, clear apple juice. No fizzy drinks or juice with pulp. |
| Alcohol | 24 hours before | Interacts with anaesthetic agents. |
| Smoking and vaping | As early as possible | Stopping even 24 hours before reduces breathing complications. |
For a procedure scheduled at 10:00 am, stop eating at 4:00 am (so finish supper the night before) and stop clear fluids at 8:00 am. For an afternoon list at 2:00 pm, you may have a light breakfast before 8:00 am and clear fluids until midday.
Bring a current list, or the boxes themselves, to admission. Unless you have been told otherwise:
| Medication | What to do | Notes |
|---|---|---|
| Blood thinners — warfarin, apixaban, rivaroxaban, clopidogrel | Ask before stopping | Timing is individual and must be confirmed with me and, where relevant, your cardiologist or haematologist. |
| Aspirin | Usually continue | Confirm if you take it for a heart or clotting condition. |
| Anti-inflammatories — ibuprofen, naproxen, diclofenac | Stop 5 days before | Paracetamol is fine. |
| Herbal supplements — fish oil, vitamin E, ginkgo, garlic, turmeric | Stop 7 days before | Several increase bleeding. |
| Metformin and other diabetes medicines | Ask before stopping | Insulin doses are adjusted individually; the hospital will advise. |
| GLP-1 medicines — semaglutide, tirzepatide | Stop 7 days before | They slow stomach emptying, which raises anaesthetic risk. |
| Blood pressure, thyroid, epilepsy, asthma, reflux | Continue as normal | Take with a small sip of water on the morning. |
| The pill or hormone therapy | Ask before stopping | May be stopped before longer operations because of clot risk. |
You must not drive, ride, or travel home alone for 24 hours after a general anaesthetic or sedation, and you must have a responsible adult with you overnight. Taxis and rideshare do not count as an escort. Day surgery will be cancelled on the day if no arrangement is in place.
Ring the rooms on 03 8400 6193 during business hours. Outside hours, contact the hospital where you were treated, or attend your nearest emergency department. Call 000 for heavy bleeding, severe pain not controlled by your pain relief, chest pain, breathing difficulty, fever above 38°C, or a hot, swollen, painful calf.
This sheet is general information about preparing for a procedure. Your own instructions — particularly fasting times and medication changes — take precedence, and the hospital will confirm your arrival time directly.