Application of the heart failure meta-score to predict prognosis in patients with cardiac resynchronization...

Area of Science:

• Cardiology
• Medical Prognostics

Background:

• The Heart Failure (HF) Meta-score's utility in predicting prognosis for primary prevention cardiac resynchronization defibrillators (CRT-D) patients is under investigation.
• Considering competing risks of appropriate defibrillator shock versus mortality is crucial for accurate prognostic assessment.

Purpose of the Study:

• To evaluate the performance of the HF Meta-score in predicting outcomes in patients with primary prevention CRT-D.
• To assess the score's ability to predict mortality and the combined endpoint of death or appropriate implantable cardioverter-defibrillator (ICD) shock.

Main Methods:

• Retrospective analysis of data from 648 consecutive patients across two centers.
• Utilized the Fine-Gray model for competing risk regression analysis.
• Primary endpoint: mortality; Secondary endpoint: time to first appropriate ICD shock or death without prior appropriate ICD shock.

Main Results:

• Over a median of 5.2 years, 237 patients died. Five-year mortality incidence ranged from 12% to 53% across HF Meta-score quintiles.
• The highest quintile showed a significantly higher mortality risk (HR 6.9) compared to the lowest.
• The HF Meta-score demonstrated excellent calibration and discrimination for mortality prediction (C-statistic 0.76 at 1-year, 0.71 at 5-year).

Conclusions:

• The HF Meta-score effectively predicts survival in heart failure patients treated with CRT-D for primary prevention.
• The score is valuable for identifying patients with a poor prognosis despite CRT-D implantation.