Drug-induced AV block / bradyarrhythmia in polypharmacy

HIGH-YIELD Appears 1×

Teaching point

Second-degree (2:1) AV block in a polypharmacy patient is usually caused by AV-nodal blocking drugs: beta-blockers, digoxin, and rate-limiting calcium-channel blockers (verapamil/diltiazem). Identify the negatively chronotropic agent.

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