What is the typical duration for CPR cycles?

The standard practice is to perform CPR for about 2 minutes before reassessing the patient. This allows trained rescuers to provide a consistent and effective rhythm of chest compressions and ventilation cycles. After 2 minutes, or roughly five cycles of 30 compressions followed by two breaths, it is essential to pause to evaluate the patient's response and reassess the situation. This reassessment is crucial as it helps determine whether interventions are making a difference, whether to continue CPR, or if there are indications for advanced life support measures.

In emergencies, efficiency and clarity in the action steps are vital, making the 2-minute interval practical for both rhythm and reassessment to ensure the highest chance of patient survival. The duration reflects current guidelines established by organizations such as the American Heart Association, which emphasize compressions alongside timely medical response.