In short. The review that can veto part of a combined plan: blood count, clot and bleeding history, blood pressure, medication and previous anaesthetics.
Key points
- The anaesthetist holds a veto over the session.
- The operating surgeon decides which component is dropped when the session has to be shortened.
- Both of those decisions are usually made before the date, at the assessment, and the patient should be told the outcome rather than discovering it on the morning.
A combined plan is reviewed twice: once for what should be done, and once for what can be tolerated while it is done. The second review is the pre-anaesthetic assessment, and it is the appointment that most often changes a plan that had already been agreed in principle.
What the assessment looks at
Blood count, because a low count limits how much blood loss a long session can absorb. Clotting and bleeding history, including any previous clot, any family history of one, and any tendency to bleed. Blood pressure and the heart and lungs, because a longer anaesthetic is carried by those systems. Long-term conditions, and how well they are controlled at the moment rather than in general. Medication, including anything bought without a prescription and any supplement. And previous anaesthetics: how they were tolerated, whether there was sickness afterwards, and whether anything unexpected happened.
Why it is a separate appointment
Because it asks different questions from the surgical consultation, and because the person who holds the authority to stop is not always the person who proposed the list. The anaesthetist can decline to anaesthetise for a session that is too long for the patient in front of them, and that judgement is made on the day’s findings rather than on the plan’s ambition.
Who can cancel a component
The anaesthetist holds a veto over the session. The operating surgeon decides which component is dropped when the session has to be shortened. Both of those decisions are usually made before the date, at the assessment, and the patient should be told the outcome rather than discovering it on the morning.
What the findings change
A low blood count may mean treating the anaemia first and moving the date. A clotting problem, or a medicine that affects it, may mean changing medication under supervision and re-checking. Uncontrolled blood pressure or blood sugar usually means postponing until it is controlled, because both affect wound healing in two operated areas at once. A difficult previous anaesthetic changes the plan for this one. None of these is a refusal; each is a reason to change what is done or when.
Declare these, even if they seem unimportant
- Any previous clot, in the leg or the lung, and any family history of one.
- Anything you take that affects bleeding, including supplements and anything bought without a prescription.
- Any previous anaesthetic that was difficult, prolonged, or followed by unexpected sickness or confusion.
How to prepare for it
Bring the actual list of everything you take, written as it appears on the packet, and bring the results of any recent tests rather than describing them. Say plainly what you are worried about. Ask what the assessment has concluded about how much can be done in one session, and ask which component would be dropped if the estimate has to change. The answer to that last question is what turns a proposal into a plan.
Frequently asked questions
Is the pre-anaesthetic assessment the same as the surgical consultation?
No, and they answer different questions. The surgical consultation decides what should be done; the pre-anaesthetic assessment decides what your body can safely tolerate while it is being done. That is why the second appointment sometimes changes the plan the first appointment proposed, and why it is a review of its own rather than a formality before the date.
What if the assessment says I cannot have the whole plan?
Then the plan is changed rather than cancelled. Components are dropped, reduced or deferred to a second admission, and the operation that remains is the one that matters most. Patients often hear this as a failure, and it is closer to the opposite: the assessment exists precisely so that a session is not carried beyond what the patient can absorb.
Should I stop my medication before the assessment?
Do not change anything on your own, including anything bought without a prescription and any supplement. Some medicines affect bleeding or clotting and need to be managed deliberately in the days around surgery; stopping them without advice can be more dangerous than continuing them. Bring the actual list, including doses as written on the packet, and let the team plan the changes.
Risks & Limitations
- Combining operations lengthens a single anaesthetic, which raises the risk of a clot and disturbs temperature and fluid balance. How much can be done in one session is set by your reserve, not by the list on offer.
- Blood loss accumulates across a whole session rather than belonging to one part of it.
- If the estimate changes during the operation, a component may be left for a second stage. That is the plan being followed rather than a failure, and it should be discussed before the date.
- Two operated areas healing at once is harder on the body than one, and a wound problem in either area slows the other.
- Staging means two anaesthetics, two recoveries and two periods of restricted lifting. The interval between the stages is judged at review rather than fixed in advance.
- Scars do not disappear. They mature over six to twelve months, and a scar may widen or thicken.
- A result that changes with further weight change or another pregnancy is not a failure of the operation.
When to Seek Care
- Pain, swelling, warmth or redness in one calf, or sudden breathlessness or chest pain. Seek emergency care immediately.
- Fever with spreading redness, warmth or discharge from a wound, or fluid leaking from it. Seek care the same day.
- A swelling under the skin that is new or increasing, or a wound that opens.
- Pain that is worsening rather than settling, or an area of skin at a wound edge that turns dark.
- Tenderness, swelling or redness in one breast with fever, which needs assessing rather than waiting.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) — procedure and safety guidance
- National Institute for Health and Care Excellence (NICE, UK) — relevant guidance
- Cochrane Library — systematic reviews
- Chinese Medical Association Plastic Surgery Branch — clinical guidance
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.