What is the main cause of cardiac arrest in adults?

The main cause of cardiac arrest in adults is coronary artery disease. This condition leads to the blockage of blood flow to the heart muscle due to the buildup of plaque in the coronary arteries, which can result in ischemia (lack of blood flow) or an acute myocardial infarction (heart attack). When the heart muscle does not receive enough oxygen-rich blood, it can become damaged, resulting in electrical disturbances and ultimately leading to cardiac arrest.

Understanding coronary artery disease as the predominant cause helps underscore the importance of addressing risk factors such as hypertension, high cholesterol, smoking, obesity, and diabetes, which contribute to the progression of this disease. Moreover, recognizing the link between coronary artery disease and cardiac arrest emphasizes the need for preventive measures like lifestyle changes and medical interventions to reduce the risk of heart-related emergencies in adults.