During CPR, what is a critical factor for effectiveness?

Maintaining proper technique and rhythm during CPR is essential for its effectiveness. Proper technique ensures that chest compressions are delivered at the correct depth and rate, which is typically 100 to 120 compressions per minute. Compressions need to be hard and fast, allowing the heart to refill properly between compressions, thereby facilitating effective blood circulation to vital organs.

The rhythm is crucial because inconsistent compressions can lead to inadequate blood flow, diminishing the chances of survival for the person experiencing cardiac arrest. Proper technique not only maximizes the efficiency of each compression but also reduces the risk of injury to the person receiving CPR, making it safer and more effective.

In contrast, using excessive force can lead to rib fractures or injury, which may complicate the situation instead of helping. Performing rescue breaths alone is not optimal when chest compressions should be prioritized, especially in adult cases of cardiac arrest. Additionally, limiting the number of compressions would reduce the overall blood flow to the heart and brain, significantly decreasing the likelihood of a successful resuscitation.