Prognostication of Poor Survival After Cardiac Resynchronization Therapy

Area of Science:

• Cardiology
• Medical Devices
• Heart Failure Management

Background:

• Cardiac resynchronization therapy (CRT) is a key treatment for heart failure (HF).
• A significant portion of patients (approximately one-third) do not benefit from CRT or experience adverse outcomes.
• Identifying preimplantation factors predicting CRT outcomes is crucial for patient selection and management.

Purpose of the Study:

• To investigate preimplantation clinical, electrocardiographic, and echocardiographic factors associated with survival after CRT.
• To identify predictors of poor outcomes in patients undergoing CRT.

Main Methods:

• Retrospective unicenter study of 183 consecutive patients receiving CRT.
• Analysis of baseline demographic, clinical, electrocardiographic, and echocardiographic data.
• Multivariate and univariate Cox regression analyses were used to assess survival predictors.

Main Results:

• The study found that an ischemic origin of heart failure (HF) was a significant predictor of worse survival (aHR 15.235, p=0.009).
• Reduced tricuspid annular plane systolic excursion (TAPSE) <15.5 mm was associated with adverse outcomes (HR 5.019, p=0.012).
• Post-implantation use of antiplatelet agents, statins, and nitrates also showed associations with poorer survival.

Conclusions:

• Ischemic etiology of heart failure is a significant factor linked to worse survival post-CRT.
• Decreased TAPSE is also identified as a predictor of poor survival in CRT recipients.
• These findings may aid in refining patient selection and post-CRT management strategies.