How does an increased coronary perfusion pressure during CPR affect patient outcomes?

An increased coronary perfusion pressure during cardiopulmonary resuscitation (CPR) is crucial because it enhances blood flow to the heart muscle during chest compressions. This improved perfusion pressure helps ensure that the coronary arteries receive sufficient blood supply, thereby increasing the chances of restoring a perfusing rhythm during cardiac arrest. Higher coronary perfusion pressure is associated with better oxygen delivery to the heart tissue, which is essential for the recovery of myocardial function post-resuscitation.

When the heart muscle receives adequate blood flow and oxygenation, the likelihood of successful defibrillation increases, ultimately leading to better overall outcomes and higher rates of survival. This is why raising the chances of survival is directly linked to improved coronary perfusion pressure during CPR, making it the correct answer in this context.