Pre-operative assessment for older patients
A thorough check before an operation, tailored to older people, that assesses health, frailty and risk, optimises long-term conditions and medicines, and supports an honest, shared decision about whether and how to proceed.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- It is a whole-person check before surgery, tailored to older patients, covering frailty, long-term conditions, medicines, memory, nutrition and home support.
- Its two aims are optimisation (getting health into the best shape) and an honest, individual picture of benefits and risks.
- It supports a shared decision — surgery is not always the right choice, and alternatives or doing less are part of the conversation.
- Plan for recovery early: delirium, slower recovery and changes in independence are real risks that are best anticipated.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Gives an honest, individual picture of the benefits and risks of surgery
A truly emergency operation cannot wait for a full elective optimisation process, though a rapid focused assessment still applies.
Your health, frailty and medicines are reviewed, tests are arranged, and the benefits, risks and alternatives are discussed. Breaks can be taken if needed.
A clear, individual risk picture and written plan shared with the person, surgeon, anaesthetist and GP.
Your health, frailty and medicines are reviewed, tests are arranged, and the benefits, risks and alternatives are...
An individual risk picture and a plan are usually shared, including any optimisation needed and the anaesthetic...
Optimisation happens — treating anaemia, adjusting medicines, improving condition control — and a plan to prevent...
You make a shared, informed decision about whether and how to proceed, with surgery scheduled or alternatives...
What is a pre-operative assessment for older patients?
A pre-operative assessment is a check carried out before an operation to make sure surgery is as safe as it can be, and that it is the right choice for the person. For older patients, this assessment is often broader, because age, frailty, several long-term conditions and many medicines can all affect how someone copes with surgery.
This kind of tailored review is sometimes called perioperative medicine for older people, and it is often led by, or done with, a geriatrician. It looks at the whole person — heart, lungs, kidneys, memory, nutrition, mobility, medicines and home support — not just the part being operated on.
It has two main aims. The first is to optimise: to get long-term conditions, medicines and general health into the best possible shape before surgery, which can genuinely improve recovery. The second is honest risk: to give a clear, realistic picture of the benefits and risks for that individual, including the risk of confusion (delirium), slower recovery or loss of independence.
The goal is a shared, well-informed decision. Surgery is not always the right answer, and a good assessment is just as willing to discuss alternatives, or doing less, as it is to prepare someone for an operation.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Optimising before surgery versus considering alternatives
| Proceeding to surgery | Alternatives or doing less |
|---|---|
| Health is optimised to lower risk | Conservative or medical treatment considered |
| Recovery and rehab planned in advance | Avoids the risks of an operation |
| Suits clear benefit and acceptable risk | Suits high risk or limited expected benefit |
| Person understands and accepts the risks | Person prioritises comfort or independence |
There is rarely one right answer. The aim is the choice that best fits the person's own priorities, made with honest information.
Preparing for your test
- Bring every medicine, including tablets, inhalers, patches, blood thinners and anything bought over the counter, in their boxes.
- Bring recent clinic and hospital letters and details of your long-term conditions.
- Be ready to talk about how you manage day to day — walking, stairs, washing, cooking — and who helps you at home.
- Mention any memory problems, previous confusion in hospital, falls, or trouble with previous anaesthetics.
- Note what matters most to you: what you hope surgery will achieve, and what you would not want to trade for it.
- Bring glasses, hearing aids and walking aids, and a family member or carer if you can.
- Think about questions on risk, recovery and alternatives so you can make an informed choice.
What happens
The clinician reviews your health in detail: your long-term conditions, how stable they are, your medicines, your memory and mood, your nutrition, and how you manage at home. They will examine you and may check things like blood pressure lying and standing, your heart and your chest.
They assess your frailty and overall reserve, and arrange any tests needed — for example blood tests, an ECG, or sometimes a heart or lung assessment — to judge how you will cope with anaesthetic and surgery.
Where possible, they then optimise: treating anaemia, adjusting medicines, improving control of conditions like diabetes or heart failure, and planning to reduce the risk of confusion after the operation.
Finally, they talk honestly with you about the benefits and risks for you specifically, and the alternatives, so you can make a shared decision. The plan, including anaesthetic options and recovery and rehabilitation, is discussed and written down for you, the surgeon and the anaesthetist.
Is this test right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- A truly emergency operation cannot wait for a full elective optimisation process, though a rapid focused assessment still applies.
- If the person clearly does not want surgery, the assessment should support that choice rather than push towards an operation.
- It is not a substitute for the surgeon's and anaesthetist's own assessments, but works alongside them.
- Where expected benefit is very low and risk very high, surgery may not be the right pathway at all.
Delay or rearrange if…
- There is an active infection, poorly controlled condition or recent acute illness that should be treated first.
- Anaemia, poor diabetes control or another correctable problem could be improved before surgery.
- Key results or specialist opinions are still awaited.
- The person needs more time or information to make a shared decision.
Alternatives to discuss
- Conservative or medical treatment instead of surgery.
- A less extensive procedure where appropriate.
- Watchful waiting if the condition is stable and the person prefers it.
- Prioritising comfort and independence over an operation where benefit is uncertain.
- Deferring surgery until health is optimised.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Comfort, sedation or contrast choices
If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.
Benefits
- Gives an honest, individual picture of the benefits and risks of surgery
- Optimises health beforehand, which can improve recovery and reduce complications
- Identifies and helps prevent problems such as post-operative confusion (delirium)
- Supports a genuinely shared decision, including whether surgery is the right choice
- Plans recovery, rehabilitation and getting home from the start
- Joins up the surgeon, anaesthetist, geriatric team and GP around one clear plan
Risks & complications
- The assessment can be tiring, as a lot is covered
- More tests may be arranged than expected
- Surgery may be delayed to optimise health or arrange further tests
- An honest risk discussion can be unsettling or raise worries about recovery and independence
- Family and the person may not agree on whether to proceed
- A condition may be found that needs treating before surgery can go ahead
- The assessment may conclude that the risks of surgery outweigh the likely benefit for that person
- An urgent or serious problem may be uncovered that needs prompt attention
The hardest part is often the honest conversation about risk. For older people, the risks that matter most are not only the operation itself but confusion (delirium), slower recovery, and the chance of losing some independence afterwards. These are best discussed openly and planned for in advance. Ask what your individual risks are, what can be done to lower them, what recovery realistically looks like, and what the alternatives to surgery are. A good assessment treats 'not operating' as a serious option, not a failure.
Published figures to discuss
Surgical risk in older people varies enormously with the operation, urgency, frailty and individual health, so single percentages can mislead. Risk is best given for the specific operation and person by the surgical and anaesthetic team, alongside the geriatric assessment. We therefore avoid quoting generic numbers, and focus on the risks that matter most for older patients — delirium, slower recovery and changes in independence.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Post-operative delirium in older adults | Common; often around 10 to 50% depending on operation, frailty and baseline cognition | Delirium prevention should be planned before surgery, including medicines, pain, hydration, hearing, vision and sleep. | NICE NG45 — Routine preoperative tests for elective surgerynice.org.ukPublished figure |
| Frailty increasing surgical complications and length of stay | Consistently higher than in non-frail patients | Frailty assessment should inform shared decision-making, prehabilitation and post-operative support. | NICE NG45 — Routine preoperative tests for elective surgerynice.org.ukSource-linked context |
| Medicine-related peri-operative harm | Common enough to require structured review | Anticoagulants, diabetes medicines, sedatives, opioids, steroids, antihypertensives and Parkinson's medicines need explicit plans. | Guide sourcesClinical context |
| Loss of independence after major surgery | Higher with frailty, dementia, poor mobility and weak social support | The consent conversation should include likely rehabilitation, care needs and what outcome the patient would consider worthwhile. | Guide sourcesClinical context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
The assessment itself needs no recovery. "Afterwards" is about the plan: what was decided, what is being optimised, and how surgery and recovery will be managed if you go ahead.
- Feeling tired after a long, detailed appointment
- Waiting while tests are done or health is optimised
- Taking time to weigh up the risk discussion before deciding
- Surgery being delayed a little so you are in the best possible shape
Aftercare
- Follow the plan for optimising your health before surgery, such as medicine changes or treating anaemia.
- Make any agreed medicine changes exactly as advised, especially blood thinners and diabetes medicines.
- Keep active and eat well where you can, as this supports recovery.
- Follow advice to stop smoking and limit alcohol before surgery if it applies to you.
- Plan ahead for recovery and getting home, including any equipment or support.
- Ask any remaining questions about risk, recovery and alternatives before you decide.
- Make sure the surgeon, anaesthetist and GP all have the agreed plan.
- All medicines gathered in their boxes
- Recent clinic and hospital letters to hand
- Notes on how you manage day to day and who helps
- A record of any previous confusion or anaesthetic problems
- Glasses, hearing aids and walking aids ready
- A family member or carer to attend if possible
- Your own priorities and questions written down
⚠ Get urgent help if…
- New or worsening chest pain, severe breathlessness or fainting before surgery
- Signs of infection — fever, cough, burning when passing urine — which may delay surgery
- Sudden confusion or a marked change from normal
- A fall causing injury or loss of confidence in moving about
- Poor blood sugar control if you have diabetes
- Stroke symptoms — face drooping, arm weakness, slurred speech (call 999)
- Any new severe symptom while waiting for surgery — contact your team for advice
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
A good outcome is a clear, honest understanding of your individual benefits and risks, health that has been optimised as far as possible, and a decision that genuinely fits your own priorities — whether that is proceeding with surgery or choosing an alternative.
The assessment cannot remove the risks of surgery or guarantee a smooth recovery, and it cannot predict exactly how any individual will do. What it can do is lower avoidable risk, anticipate problems like delirium, and make sure the decision is properly informed and shared.
The findings reflect your health at the time of assessment. If surgery is delayed, or your health changes, parts of the assessment may need updating, because fitness for surgery is not fixed. Optimisation — better-controlled conditions, treated anaemia, improved fitness — can keep benefiting you, and the plan should be reviewed if circumstances change before the operation.
Related tests, treatments or support
This assessment brings together the work of several teams: the surgeon, the anaesthetist, a geriatrician and the GP. It usually includes a medication review, blood tests, an ECG and sometimes heart or lung assessment, and may overlap with a falls assessment, a postural blood pressure check, a capacity assessment, and conversations about advance care planning where relevant.
Follow-up & long-term care
Follow-up depends on the plan. Optimisation and tests are completed before surgery, and the agreed plan is shared with the surgeon, anaesthetist and GP. If you proceed, the geriatric team may stay involved during recovery to help prevent and manage problems and support rehabilitation. If you choose an alternative, your ongoing care is arranged accordingly.
- Keep long-term conditions well controlled in the run-up to surgery
- Maintain activity and good nutrition to support recovery
- Continue any agreed optimisation, such as iron for anaemia
- Re-assess fitness if surgery is delayed or health changes
- Keep the recovery and rehabilitation plan ready for after the operation
Repeat, follow-on and what comes next
- Fitness can change, so the assessment may need updating if surgery is delayed.
- Optimisation may need more than one round before the person is ready.
- The plan, including anaesthetic choice, may be revised as new information emerges.
- If recovery is harder than hoped, rehabilitation plans are adjusted rather than fixed.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A clear, individual risk picture and written plan shared with the person, surgeon, anaesthetist and GP.
- Optimisation completed before surgery, with someone responsible for it.
- A plan to prevent and manage delirium, with familiar routines and support.
- A rehabilitation and discharge plan prepared in advance, including equipment and support.
- Continued geriatric input during recovery where helpful, and a named contact.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- The seniority and experience of the clinician and whether a geriatrician is involved
- Whether the assessment is in clinic or at home
- How many tests are needed, such as blood tests, ECG or heart and lung assessment
- The complexity of the person's health and number of conditions
- Whether optimisation, such as treating anaemia, is included
- The detail of the written report and coordination with the surgical team
- Any follow-up reviews before or after surgery
- The clinician's fee and whether geriatric input is included
- Which tests are included and which are charged separately
- Whether optimisation before surgery is included
- Whether a written report and coordination with the surgeon and anaesthetist are included
- Whether follow-up before or after surgery is included
- What happens, and any cost, if surgery is delayed for further optimisation
- The cancellation policy
On the NHS? Pre-operative assessment is a standard part of NHS surgical care, with specialist services for older patients in many hospitals; private assessment is available before private surgery.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Giving generic risk figures rather than the person's individual risk.
- Not discussing delirium, loss of independence or realistic recovery.
- Failing to present 'not operating' or a smaller procedure as serious options.
- Assuming an older person cannot weigh up the decision — capacity is presumed and decision-specific.
- Not planning recovery and rehabilitation as part of the consent conversation.
Marketing red flags
- Promising a 'quick' or 'simple' recovery regardless of age or frailty.
- Pushing surgery without an honest discussion of alternatives.
- Downplaying the risk of confusion or loss of independence.
- Skipping proper optimisation to operate sooner.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- What are my individual risks from this operation, and how do they compare with not operating?
- What can be done to optimise my health and lower my risk before surgery?
- How likely am I to become confused (delirium) afterwards, and how will that be prevented?
- What does recovery realistically look like for someone like me, including my independence?
- What are the alternatives to surgery, and what would they involve?
- Who will look after me during recovery, and what is the rehabilitation plan?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my test, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this test not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Why does an older person need a more detailed pre-op assessment?
Could the assessment conclude that I should not have surgery?
What is delirium and why does it come up?
Will my operation be delayed?
What happens to my medicines around surgery?
Is this available on the NHS?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: Centre for Perioperative Care & BGS — Perioperative care of people living with frailty CPOC–BGS Frailty Guideline 2021 (PDF) British Geriatrics Society — Perioperative care (POPS) BJA Education — Preoperative assessment of the older patient NICE NG45 — Routine preoperative tests for elective surgery
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
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