Final answer:
The correct steps for CPR on an adult are to check for responsiveness, call 911, begin chest compressions, and give rescue breaths, with chest compressions at a rate of 100 to 120 per minute. Training is vital to ensure the technique is performed correctly, as improper application can lead to severe injuries.
Step-by-step explanation:
Performing CPR (cardiopulmonary resuscitation) correctly is critical to potentially save a life during a cardiac emergency. For adults, the steps for a single provider performing CPR are as follows: First, check for responsiveness by tapping the person and shouting. If there is no response, call 911 and, if available, get an automated external defibrillator (AED). Next, begin chest compressions by placing the heel of one hand on the center of the person's chest (between the nipples) and your other hand on top, pushing down at least 5 cm (2 inches) deep at a rate of 100 to 120 compressions per minute. After every 30 compressions, provide two rescue breaths by tilting the person's head back, lifting the chin, pinching the nose shut, and making a seal over their mouth with yours. With multiple providers, one rescuer performs chest compressions while the other prepares for rescue breaths or operates the AED as soon as it's available.
Proper training is essential because incorrect technique can cause severe injuries. The technique requires the rescuer to compress the chest between the T4 and T9 vertebral levels, thus avoiding damage to the xiphoid process and organs.