Answer to Pathology MCQ 484

The Correct Answer is B

Sudden cardiac death (SCD) is an unexpected death due to cardiac causes occurring in a short time period (generally within 1 h of symptom onset) in a person with known or unknown cardiac disease in whom no previously diagnosed fatal condition is apparent. Most cases of SCD are related to cardiac arrhythmias. Approximately half of all cardiac deaths can be classified as SCDs. SCD occurs as the first expression of cardiac disease in many individuals presenting as out-of-hospital patients with cardiac arrest. According to the American Heart Association, more than 680 people experience sudden death each day in the United States. That is over 350,000 each year.

Sudden cardiac death (SCD) continues to be challenging problem for several decades due to the high mortality rate (85 to 90%) observed in out of hospital arrests. Also more than 50% of SCD are due to the ventricular tachyarrhythmia without myocardial infarction (MI). Although more than 80% of SCD events occur in individuals with coronary artery disease (CAD), evidence of acute MI is far less common.

Category: Pathology MCQs