What is the minimum coronary perfusion pressure required for a successful outcome during cardiac arrest?

The minimum coronary perfusion pressure required for a successful outcome during cardiac arrest is recognized as being around 15 mmHg. This pressure is crucial because it reflects the driving force for blood flow to the coronary arteries, ensuring that the heart muscle receives adequate oxygen and nutrients during cardiopulmonary resuscitation (CPR).

When this perfusion pressure is maintained at or above 15 mmHg, it helps sustain myocardial viability, thereby improving the chances of successful defibrillation and a return to spontaneous circulation. Maintaining adequate coronary perfusion is vital during the intervals of chest compressions, as it allows for sufficient blood flow to the heart and brain, significantly affecting the overall survival rates and favorable neurological outcomes in pediatric patients experiencing cardiac arrest.

In the context of this question, the other options indicate pressures that are generally considered too low (10 mmHg) or beyond the threshold needed for effective perfusion (20 mmHg and 25 mmHg). These higher pressures are not necessary for the primary goal of ensuring sufficient perfusion during cardiac arrest.