A Client Is Admitted to the Emergency Department (ED) with New-Onset

A client is admitted to the emergency department (ED) with new-onset atrial fibrillation. Which cardiac rhythm history would be a contraindication for the use of a sodium channel blocker antidysrhythmic medication?

A) Occasional premature ventricular contractions (PVCs)
B) Multiple premature atrial contractions (PACs)
C) Elevated blood sugar
D) Second-degree AV block