Relation Between Ventricular Premature Complexes and Incident Heart Failure.

Area of Science:

• Cardiology
• Epidemiology
• Heart Failure Research

Background:

• Ventricular premature complexes (VPCs) are recognized but their role in heart failure (HF) development is not fully understood.
• Identifying patient subgroups prone to HF from VPCs is crucial for risk stratification and clinical management.

Purpose of the Study:

• To investigate the association between VPCs and incident systolic heart failure (HF).
• To identify interactions between VPCs and known cardiovascular risk factors in predicting HF.
• To determine if VPCs are a significant cause of "idiopathic" HF.

Main Methods:

• Utilized the California Healthcare Cost and Utilization Project database (2005-2009).
• Identified patients with VPCs and incident systolic HF using multivariable Cox proportional hazard models.
• Analyzed interactions between VPCs and risk factors like age, coronary artery disease, hypertension, diabetes, and atrial fibrillation.

Main Results:

• VPCs were diagnosed in 0.2% of 16.8 million hospitalizations; 1.2% developed systolic HF.
• VPCs were associated with a nearly twofold increased risk of systolic HF (HR 1.8).
• The strongest association was observed in younger patients (<65 years) without comorbidities, showing a sixfold increased HF risk (HR 6.5).

Conclusions:

• VPC diagnosis is an independent predictor of incident systolic HF.
• The risk of HF associated with VPCs is most pronounced in younger individuals lacking other cardiovascular risk factors.
• VPCs may represent a significant, potentially reversible, cause of heart failure previously attributed to idiopathic factors.