Premature ventricular contractions (PVCs) are extra, abnormal heartbeats caused by ectopic foci within the ventricles. PVCs are very common and most individuals are asymptomatic, but select patients may present with symptoms such as dizziness or palpitations. Typical ECG findings of PVCs include broad QRS complexes, compensatory pauses, and axis deviation, and may be random or have consistent patterns, such as couplets or bigeminy. Most patients do not require treatment. However, any underlying condition, e.g., myocarditis, must be managed appropriately. Patients with frequent PVCs that cause significant symptoms should receive antiarrhythmic drugs or possibly catheter ablation, as they are at risk for sudden cardiac death.
- Evaluate suspected patients with ECG
- If confirmed, rule out underlying disease (e.g., echocardiography, exercise treadmill stress test) with further procedures
- Common characteristics
- Possible additional characteristics