Heart failure with normal left ventricular ejection fraction

Area of Science:

• Cardiology
• Heart Failure Research
• Clinical Pathophysiology

Background:

• Approximately 50% of heart failure patients exhibit preserved left ventricular ejection fraction (HFNEF).
• HFNEF is increasingly recognized as a heterogeneous condition, not a singular entity.
• Existing research often treats HFNEF as a uniform group, potentially obscuring diverse underlying mechanisms.

Purpose of the Study:

• To critically review and synthesize current data on the pathophysiology of HFNEF.
• To contextualize these findings within a new diagnostic algorithm for HFNEF.
• To explore potential future therapeutic strategies based on mechanistic insights.

Main Methods:

• Comprehensive literature review of studies on HFNEF pathophysiology.
• Analysis of echocardiographic measures and biomarkers commonly used in HFNEF diagnosis.
• Integration of pathophysiologic data with diagnostic and therapeutic considerations.

Main Results:

• HFNEF encompasses multiple distinct pathophysiologic pathways.
• Echocardiographic measures and biomarkers show variable utility in differentiating HFNEF subtypes.
• Mechanistic understanding is crucial for developing targeted therapies.

Conclusions:

• HFNEF is a complex syndrome with diverse underlying mechanisms requiring tailored approaches.
• A refined diagnostic algorithm incorporating mechanistic insights is proposed.
• Future therapies should target specific pathophysiologic pathways within the HFNEF spectrum.