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Pre-operative assessment


Guy's Hospital

Phone: 020 7188 4222

Address: pre-assessment clinic (within diabetes clinic), 3rd floor, Southwark Wing, Guy's Hospital, Great Maze Pond, London SE1 9RT

Map to pre-operative clinic at Guy's Hospital (PDF 2.13MB)

St Thomas' Hospital

Phone: 020 7188 7188 ext 53165 or 53164

Address: ground floor, Gassiot House, St Thomas' Hospital, Westminster Bridge Road, London SE1 7EH

Map to pre-operative clinic at St Thomas' Hospital (PDF 1.96MB)

Open: Monday to Friday, 9am to 5pm


We'll assess your general health and fitness by carrying out tests and investigations.

This pre-operative assessment is done at a nurse-led clinic. If you have more complex medical conditions you may be seen in a clinic led by an anaesthetic consultant.

Before your appointment

Please complete the online pre-operative assessment form which we'll send you. When you have completed the form, we'll contact you with an appointment date and time.

What to expect at your appointment

You'll be asked to complete a health questionnaire. This includes questions about:

  • your past and present health
  • previous operations
  • medicines you take

A nursing assistant, nurse or anaesthetist will check your general health and fitness. This could include:

  • checking your blood pressure, pulse, temperature, height and weight
  • a physical examination to listen to your heart and lungs. You may need to partially undress and lie down on the examination couch
  • an electrocardiogram (ECG) to record the rate, rhythm and electrical activity of your heart. This is a simple test that takes about 5 minutes and does not cause any discomfort
  • a swab to check for MRSA bacteria that can cause infections. You'll need any infections treated before you can have surgery

Please ask us if you would prefer to see female or male health professional.

After the first assessment, we may need to carry out further tests including:

  • blood tests
  • photographs
  • X-rays
  • cardiopulmonary exercise test (CPET)
  • echocardiogram

After your appointment

Your surgical speciality will contact you to let you know the outcome of your assessment.