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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medically reviewed by WellAlly Editorial TeamLast reviewed October 19, 2026Editorial policy
First Aid21 min read

How to Perform Hands-Only CPR on an Adult in an Emergency

Published: October 19, 2026Updated: October 19, 2026

Hands-only CPR is a life-saving technique used when an adult suddenly collapses due to cardiac arrest outside of a hospital setting. By providing continuous, high-quality chest compressions without rescue breaths, you can keep oxygenated blood circulating to the brain and heart until emergency medical services arrive. Taking immediate action can double or even triple a person's chances of survival.

Quick Summary

In an adult emergency, immediately call 911 and push hard and fast in the center of the chest at 100 to 120 beats per minute until professional help arrives.

Important Medical Disclaimer

This guide is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult with qualified healthcare providers for medical concerns.

Step-by-Step Guide

1

Check the Scene and Assess Responsiveness

Verify that the immediate environment is safe for you and the victim before approaching. Tap the person firmly on their shoulders and shout, "Are you okay?" to check for a reaction. Quickly scan their face and chest for signs of normal breathing or movement for no more than 10 seconds.

Important: Do not delay CPR if the person is only gasping or making abnormal snoring sounds; agonal gasps are a sign of cardiac arrest, not normal breathing.

2

Call 911 and Retrieve an AED

If the person does not respond and is not breathing normally, call 911 immediately or point directly at a specific bystander and tell them to call. If someone else is present, instruct them to find and bring an automated external defibrillator (AED) right away. Put your phone on speaker so the emergency dispatcher can assist you while you position yourself.

3

Position the Person on a Firm Surface

Ensure the person is lying flat on their back on a hard, level surface such as the floor or ground. Performing compressions on a soft mattress or couch absorbs the force and prevents effective blood flow. Kneel close beside the person's chest so you can position your upper body directly over theirs.

4

Place Your Hands in the Center of the Chest

Place the heel of one hand directly on the center of the person's bare chest, along the lower half of the breastbone between the nipples. Place your other hand on top of the first and interlock your fingers, keeping your fingers pulled up off the ribcage. Lock your elbows straight and position your shoulders directly over your hands.

Important: Avoid pressing on the lower tip of the breastbone (the xiphoid process) or the ribs, as this can cause internal injury.

5

Deliver Hard and Fast Chest Compressions

Push down hard and fast, compressing the chest at least 2 inches (5 to 6 cm) deep with each stroke. Allow the chest to fully recoil back to its normal position between compressions without taking your hands off the skin. Maintain a steady tempo of 100 to 120 beats per minute, which matches the rhythm of the song "Stayin' Alive."

Important: Do not lean your body weight on the chest between compressions, because the heart needs full chest recoil to refill with blood.

6

Attach and Use an AED as Soon as Available

If an AED arrives, power it on immediately and follow the spoken and visual directions without delay. Expose the person's bare chest, dry it if wet, and apply the adhesive pads precisely where indicated on the diagrams. Stand clear and ensure no one touches the person while the AED analyzes the rhythm or delivers an indicated shock, then resume compressions immediately.

Important: Never touch the patient while the AED is analyzing the heart rhythm or administering an electrical shock.

7

Continue Compressions Until Relieved

Continue continuous chest compressions until professional emergency responders arrive and take over, or until an AED prompts you to stop. If another bystander is trained, switch roles every 2 minutes with minimal interruption to prevent rescuer fatigue. Stop compressions only if the person shows definite signs of life, such as opening their eyes, speaking, or breathing normally.

Frequently Asked Questions

Why is mouth-to-mouth rescue breathing not required for hands-only CPR?
When an adult collapses suddenly from cardiac arrest, their lungs and bloodstream still contain several minutes of oxygen. Continuous chest compressions are more effective than stopping compressions to give rescue breaths because they keep that residual oxygen circulating to vital organs without interruption.
Could I break the person's ribs while doing chest compressions?
Yes, cracked ribs or cartilage damage can occur during high-quality CPR, but cardiac arrest is fatal without intervention. Broken bones can heal, but brain damage and death happen within minutes without blood flow; never decrease your compression depth out of fear of causing injury.
What should I do if the person makes irregular gasping noises?
Treat gasping as a lack of breathing. These sounds are called agonal gasps and are a reflexive brainstem response that frequently occurs during cardiac arrest. You must start hands-only CPR immediately if the person is unresponsive and gasping.
Can I be sued for performing CPR on a stranger?
In most jurisdictions, Good Samaritan laws protect bystanders who provide emergency medical assistance in good faith. As long as you act voluntarily, without gross negligence, and do not expect compensation, you are legally protected.
  1. 1
    CDCSource
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    Mayo ClinicSource
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    NIH MedlinePlusSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed October 19, 2026. · Read our editorial policy