What is the most common cause of cardiac arrest in adults?

The most common cause of cardiac arrest in adults is coronary artery disease. This condition leads to the narrowing or blockage of the coronary arteries due to the accumulation of fatty deposits, which can reduce blood flow to the heart muscle. When the heart does not receive enough oxygen-rich blood, it can result in life-threatening arrhythmias or ineffective pumping of the heart, often culminating in cardiac arrest.

Coronary artery disease is particularly prevalent in adults due to factors such as age, high blood pressure, high cholesterol, diabetes, smoking, and poor lifestyle choices, which further contribute to its incidence. The understanding of these risk factors is essential for preventing cardiac events and managing conditions effectively. Other options, while they can contribute to cardiovascular issues, are less prevalent as direct causes of cardiac arrest in the adult population.