Which statement about atrial fibrillation is correct?
A)It is the most common genetic cardiac disorder worldwide.
B)A variety of different genes can contribute to its expression.
C)It is found exclusively in adults over 60 years old.
D)When severe, it leads to long QT syndrome.

Question

Quizplus · Accepted Answer

Mutations in many different genes can cause atrial fibrillation, which means that this arrhythmia has genetic heterogeneity. It is not related to long QT syndrome. Although it is seen more often in older adults, it can occur in children and can even be present at birth. The most common genetic cardiac disorder worldwide is familial hypertrophic cardiomyopathy, not atrial fibrillation.

Which Statement About Atrial Fibrillation Is Correct