Definition of CPR Cycle

CPR Cycle

A CPR cycle is one complete round of chest compressions followed by rescue breaths, performed in a defined ratio to sustain circulation and oxygen delivery during cardiac arrest. For adult CPR the standard ratio is 30 compressions to 2 breaths, while two-rescuer infant and child CPR uses 15 compressions to 2 breaths.

Rescuers repeat these cycles continuously, pausing only briefly for rhythm checks or AED analysis, and switching compressors roughly every two minutes (about five cycles) to prevent fatigue and maintain compression quality. Keeping the cycle uninterrupted is essential, because each pause causes blood flow and pressure to drop, reducing the likelihood of a successful resuscitation.

CPR Certification Labs provides hands-on, American Heart Association–aligned CPR, BLS, ACLS, and PALS certification training to help providers master these life-saving skills.

Medical Definition & Meaning

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What the AHA CPR Certification Course Includes

Comprehensive CPR Training for Adults, Children, and Infants

Our technology delivers immediate, actionable feedback that refines your skills in real time.

Proper Use of AED Devices for All Age Groups

Understand how to safely and effectively operate an Automated External Defibrillator (AED) for adults, children, and infants.

Airway Obstruction Relief and Heimlich Maneuver

Learn how to perform the Heimlich maneuver and clear airway obstructions caused by choking in both adults and infants.

Team-Based Multi-Rescuer CPR Techniques

Gain experience working as part of a team when more than one rescuer is available during an emergency.

Official American Heart Association CPR E-Card

Receive your AHA CPR Certification E-Card on the same day you complete the class and pass the exam.

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