ventricular ectopy burden
Quantitative measure of premature ventricular contractions during ambulatory monitoring, used to assess arrhythmic risk in athletes.
Full Definition
Ventricular ectopy burden represents the percentage or absolute number of premature ventricular contractions (PVCs) detected during ambulatory electrocardiographic monitoring, typically expressed as a percentage of total heartbeats over 24 hours. In sports cardiology, ectopy burden helps stratify risk for exercise-related arrhythmic events and guides decisions regarding athletic participation. Generally, burdens exceeding 10-20% warrant detailed evaluation for underlying structural heart disease. The assessment includes analysis of ectopy morphology, complexity, and relationship to exercise, as suppression of PVCs during exercise may indicate benign etiology.
Usage
Usage note: Express as percentage when possible; distinguish from simple ectopy frequency in clinical reports.
In Context
- "Holter monitoring revealed a ventricular ectopy burden of 15%, prompting further structural cardiac assessment." — Ambulatory monitoring report
- "The athlete's ventricular ectopy burden decreased during exercise, suggesting benign etiology." — Sports cardiology evaluation