[Heart Failure in Patients With Preserved Ejection Fraction - Pumping Heart Failure?]

Area of Science:

• Cardiology
• Internal Medicine
• Physiology

Background:

• Chronic heart failure (CHF) is a clinical syndrome characterized by organ and system hypoperfusion.
• This hypoperfusion results from various causes of circulatory pumping inadequacy.
• Diastolic heart failure, a specific form of CHF, warrants particular attention due to its complex etiology.

Purpose of the Study:

• To analyze literature data on chronic heart failure, with a focus on diastolic heart failure.
• To highlight indexed cardiac output (CO) as a more integrated characteristic of CHF than ejection fraction.
• To explore therapeutic strategies for diastolic heart failure, particularly those addressing metabolic imbalances.

Main Methods:

• Literature review and analysis of existing data on chronic heart failure.
• Examination of etiological factors contributing to diastolic heart failure.
• Evaluation of the role of cardiac output and ejection fraction in assessing CHF severity.

Main Results:

• Reduced cardiac output (CO) is a universal finding in heart failure, regardless of origin, leading to diminished tissue oxygen and substrate supply.
• The distinction between systolic and diastolic CHF is considered a conventional concept, with CO being a more integrated measure.
• The diverse causes of heart failure with preserved ejection fraction complicate hemodynamic management with standard drug regimens.

Conclusions:

• Normalization of the balance between oxygen/substrate delivery and tissue metabolic demand may be a pivotal therapeutic strategy for diastolic heart failure.
• Indexed cardiac output (CO) serves as a more comprehensive quantitative marker for CHF than ejection fraction.
• Addressing the underlying metabolic demands is essential for effective treatment of various forms of diastolic heart failure.