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Published on: 3/4/2026
How to perform CPR, step by step: ensure the scene is safe, check responsiveness and breathing, call emergency services, start hands-only chest compressions in the center of the chest at 100 to 120 per minute at least 2 inches deep with full recoil, and use an AED as soon as available; add rescue breaths only if trained.
There are several factors to consider. See below to understand more about child and infant differences, choking relief, the 30:2 ratio, when to stop, legal protections, preparedness, emotional aftercare, and when to speak with a doctor, which can affect your next steps.
It's normal to feel scared in a medical emergency. Many people worry they'll "do it wrong." But when someone's heart stops or they stop breathing, doing something is far better than doing nothing. Knowing how to perform CPR (cardiopulmonary resuscitation) can double or even triple a person's chance of survival.
This guide explains how to perform CPR in clear, simple steps based on medically approved recommendations. No complicated medical language—just what you need to know to act confidently.
CPR is a life-saving technique used when someone:
CPR keeps blood and oxygen moving to the brain and vital organs until emergency medical professionals arrive. Brain damage can begin within minutes when oxygen stops flowing. Acting quickly truly matters.
You do not need to be perfect. You just need to begin.
Before starting CPR:
If they do not respond:
If the person is not breathing normally (gasping does not count as normal breathing), start CPR right away.
If you are untrained or unsure about rescue breaths, hands-only CPR is highly effective.
Push hard and fast.
Do not stop unless:
Continuous chest compressions are the most important part of how to perform CPR.
If you are trained and feel confident, you can add rescue breaths.
If the chest does not rise:
Then continue compressions.
An AED is designed for public use. It gives voice instructions and will not shock unless needed.
If an AED is available:
AEDs dramatically improve survival when used quickly.
The steps are similar, but there are important differences.
If you are not trained, still perform chest compressions. Doing something is better than doing nothing.
Choking can lead to a lack of oxygen. Signs include:
If the person can cough, encourage coughing.
If they cannot breathe or speak:
To better understand the warning signs and symptoms of Asphyxiation, you can use a free AI-powered symptom checker that provides medically-reviewed information about breathing emergencies and oxygen deprivation.
However, if someone is not breathing, do not delay—call emergency services immediately.
Broken ribs can happen. Survival is more important than an intact rib. Chest compressions must be deep enough to move blood.
Doing CPR imperfectly is better than not doing it at all.
Good Samaritan laws in many areas protect people who provide emergency help in good faith.
If a person is unconscious and not breathing normally, CPR is appropriate.
Continue CPR until:
Knowing how to perform CPR is powerful. But being prepared is even better.
Consider:
Emergencies rarely give warnings. Preparation reduces panic.
If you perform CPR:
If someone survives after CPR, they will require immediate hospital care to determine the cause of cardiac arrest or breathing failure.
If you or someone you care for has:
You should speak to a doctor about prevention and emergency planning.
Any situation that could be life-threatening or serious deserves medical evaluation. Never rely solely on online information when immediate care may be required.
Learning how to perform CPR is not about being perfect. It's about being willing to act.
In an emergency:
Those simple steps can save a life.
You don't need medical school. You don't need special equipment. You just need the courage to begin.
If you haven't already, consider taking a CPR class soon. It turns fear into confidence—and confidence into action.
And remember: in any situation involving collapse, breathing problems, or possible asphyxiation, call emergency services immediately and speak to a doctor about anything that could be life threatening or serious.
Your willingness to act could mean everything to someone else.
(References)
* Panchal AR, Bartos JA, Cabañas JG, Donnino MW, Drennan IR, Grossestreuer AV, Halverson JJ, Hopkins E, Leary M, Link MS, McMullan PW Jr, Mosesso VN Jr, O'Neil EE, Rossano JW, Schmidt MR, Shuster M, Stubbs BA, Thornton T, Wells M, White LJ, Hazinski MF. Part 3: Adult Basic and Advanced Life Support: 2020 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation. 2020 Oct 20;142(16_suppl_2):S366-S468. doi: 10.1161/CIR.0000000000000916. PMID: 33080064.
* Ringh M, Rosenqvist M, Johansson P, Herlitz J, Westman J, Svensson L, et al. Fear of harming the patient and legal aspects of bystander cardiopulmonary resuscitation. Resuscitation. 2017 Jan;110:1-5. doi: 10.1016/j.resuscitation.2016.10.007. Epub 2016 Oct 18. PMID: 27769970.
* Ong ME, Choo SW, Poh BY, Pek PP, Tham LP, Chia P, et al. Hands-only cardiopulmonary resuscitation for adult out-of-hospital cardiac arrest: A systematic review and meta-analysis. Resuscitation. 2021 Mar;160:13-22. doi: 10.1016/j.resuscitation.2021.01.002. Epub 2021 Jan 14. PMID: 33454477.
* Perkins GD, Couper K, Smyth M, Quinn T, Nolan JP. The role of the first responder in the chain of survival. Resuscitation. 2017 Jan;110:11-12. doi: 10.1016/j.resuscitation.2016.09.020. Epub 2016 Sep 28. PMID: 27693527.
* Hasselqvist-Ax I, Riva E, Herlitz J, Rosenqvist M, Hollenberg J, Nordberg P, et al. Early cardiopulmonary resuscitation and defibrillation by bystanders increase survival in out-of-hospital cardiac arrest. Circulation. 2015 Mar 24;131(14):1257-65. doi: 10.1161/CIRCULATIONAHA.114.013565. Epub 2015 Jan 21. PMID: 25605634.
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