Someone is unconscious: what to do, step by step

First aid. Below: what to do right away, what next, when to call 112 and what to avoid. The same instructions are in the free SurvivalZone app and work without internet.

Open in the app (works offline)

First, right now

Make sure the scene is safe for you.
Check for a response (shout, tap their shoulders) and check breathing for no more than 10 seconds.
Not breathing normally? Call 112 on speaker and start chest compressions straight away.

Then

Push hard and fast in the centre of the chest: 100–120 times a minute, 5–6 cm deep.
If you are trained: 30 compressions and 2 rescue breaths. If not: compressions only, without stopping.
Have someone bring an AED defibrillator and switch it on. It tells you what to do.
Breathing? Put them in the recovery position on their side and keep checking their breathing until help arrives.

When to call 112

Always, when someone is unconscious.

What not to do

Don't stop compressions until someone takes over or the paramedics arrive.
Don't give an unconscious person anything to drink.

Keep it on your phone

SurvivalZone is a free app for every emergency, with no account and no app store. It works without internet and shows the nearest shelters and help points, local radio, a 72-hour plan and a mountain trip planner.

Open the SurvivalZone app

Other scenarios

Sources

ERC first aid and resuscitation guidelines (European Resuscitation Council)

Official sources are checked automatically every day. Last check: 2026-10-18.

General guidance only; it does not replace the emergency services. If a life is in danger, call 112.