Which action is appropriate when performing CPR on an adult?

The correct action when performing CPR on an adult is to push hard and fast at a rate of 100-120 compressions per minute. This guideline is based on extensive research that indicates this compression rate significantly improves blood flow to the heart and brain during a cardiac arrest. Maintaining a strong and rapid rhythm helps to circulate the oxygenated blood effectively until professional emergency services can take over, thereby increasing the chances of survival.

Additionally, chest compressions should be performed with adequate depth (about 2 inches) to ensure effectiveness. The emphasis on both the speed and depth of compressions plays a crucial role in CPR, as it maximizes the delivery of oxygen to vital organs, particularly if the heart is in a state of failing to pump blood effectively.

The use of one hand for chest compressions, a slower compression rate, or altering the rescue breaths in an inconsistent manner does not align with the current CPR guidelines, which stress the need for continuous, high-quality compressions to ensure the best outcomes for individuals experiencing cardiac arrest.