What is the purpose of using a hard surface when performing CPR?

Using a hard surface when performing CPR is crucial for enhancing the effectiveness of compressions. When chest compressions are initiated, the force exerted needs to be transmitted directly to the heart to create effective blood circulation. A soft surface, such as a bed or couch, can absorb some of the force from compressions, reducing their depth and effectiveness. This can compromise hemodynamic performance during a cardiac arrest situation.

In addition to providing an optimal surface for the compressions, a hard surface also allows for proper positioning, enabling rescuers to achieve the required depth and rate of compressions without hindrance. This is why responders are urged to move the victim to a hard, flat surface if possible, especially in emergency situations where time and effectiveness are critical.

While elements such as comfort for the victim, risk of injury, and the use of an AED may relate to the overall CPR process, they do not directly address the primary goal of maximizing the mechanical effectiveness of compressions in supporting circulation during cardiac arrest.