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How to do the secondary survey

Dr Lynn Thomas, OStJ, BSc, MB.BS, MA, FRCPClinically reviewed: 28/04/2025

After performing a primary survey and dealing with any life-threatening conditions, you can move on to the secondary survey.

What is the secondary survey?

The secondary survey is a methodical check to assess a responsive casualty for any other injuries or illnesses.

What to do

  1. 1

    Once you have completed a primary survey and treated any life-threatening conditions, move on to a secondary survey.

    Ask a responsive casualty and those around them questions about any incident that may have occurred. Your aim is to find out more about the casualty’s history, signs, and symptoms. If possible, take note of their answers.

    • Leave the casualty in the position you found them in until you are satisfied that it is safe to move them into a position more suitable for their injury or illness.

  2. 2

    History – find out more about the casualty’s history. Use the mnemonic AMPLE as an easy reminder. Look out for any medical warning jewellery which may provide information their medical history or any allergies.

    • Allergy – do they have any allergies? For example, nuts or any medication such as penicillin or aspirin.

    • Medication – are they taking any medication?

    • Previous medical history – do they suffer from any medical conditions, such as diabetes, epilepsy, or heart disease? Have they had any previous injuries or surgery?

    • Last meal – when did they last eat or drink?

    • Event history – what happened and where? Is the incident due to an illness or an accident? Ask any people nearby what happened and look for any clues that may give you more information.

  3. 3

    Signs – look, listen, feel and smell for any signs of injury such as swelling, deformity, bleeding, discolouration or any unusual smells. When checking them you should always compare the injured side of the body with the uninjured side. Are they able to perform normal functions such as standing or moving their limbs? As you check, make a note of any superficial injuries to treat once you’ve finished your examination.

  4. 4

    Symptoms – ask the casualty short, simple questions about any symptoms and sensations they may be feeling. They should answer in as much detail as possible. For example, ask them:

    • Do you have any pain?

    • Where is the pain?

    • When did the pain start?

    • Can you describe the pain? Is it constant or irregular, sharp or dull?

    • Is the pain made worse by movement or breathing?

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