A 74-year-old woman presents to the ED with an irregular pulse and bradycardia.What is causing her bradycardia?
a-Atrial fibrillation
b-Extrasystole
c-Second degree AV block, type 1 (Wenckebach)
d-Second degree AV block, type 2 (Non-Wenckebach)
e-Third degree AV block
