reperfusion arrhythmia
Cardiac rhythm disturbances occurring immediately following restoration of blood flow to previously ischemic myocardium during acute coronary intervention.
Full Definition
Reperfusion arrhythmias are cardiac rhythm disturbances that occur when blood flow is restored to ischemic myocardium during primary percutaneous coronary intervention or thrombolytic therapy. These arrhythmias result from the sudden restoration of oxygen and nutrients to damaged cardiac tissue, causing cellular electrophysiologic instability. Common reperfusion arrhythmias include accelerated idioventricular rhythm, ventricular tachycardia, and occasionally ventricular fibrillation. While often transient and self-limiting, these arrhythmias can be life-threatening and require immediate recognition and appropriate management. Paradoxically, their occurrence may indicate successful reperfusion of the affected vessel.
Usage
Usage note: Document timing relative to reperfusion intervention to clarify the arrhythmia mechanism.
In Context
- "The patient developed transient reperfusion arrhythmias immediately following balloon inflation, indicating successful vessel opening." — Cardiac catheterization report
- "Reperfusion arrhythmias should be distinguished from primary ischemic arrhythmias in procedural documentation." — Clinical documentation guideline