How should you perform chest compressions on an adult?

Performing chest compressions on an adult effectively requires the use of two hands placed one on top of the other, which is the correct approach. This technique allows for greater force and depth in compressions, which are crucial in resuscitating an individual in cardiac arrest. The appropriate hand positioning creates a stable surface and ensures that the compressions are delivered directly to the center of the chest, specifically over the lower half of the sternum.

Two-handed compressions not only provide the necessary depth but also help to maintain proper rhythm and speed, ideally at a rate of 100 to 120 compressions per minute. This method is more effective than using one hand, as it can be challenging to generate sufficient pressure and maintain the correct technique with just a single hand.

Using a fist to compress the abdomen or applying soft pressure on the sternum would be ineffective in this emergency medical situation, as these methods do not provide the high-quality compressions needed to circulate blood effectively during cardiac arrest. Proper training and techniques are essential to ensure the best possible outcomes during resuscitation efforts.