Cardiopulmonary exercise testing for heart failure: pathophysiology and predictive markers.

Area of Science:

• Cardiology
• Exercise Physiology

Background:

• Heart failure (HF) is a major cause of morbidity and mortality, with HF with preserved ejection fraction (HFpEF) often underdiagnosed.
• HFpEF shares similar prevalence and adverse outcomes with HF with reduced ejection fraction.

Purpose of the Study:

• To review the pathophysiology of exercise intolerance in HF.
• To discuss the utility of cardiopulmonary exercise testing (CPET) in evaluating HFpEF.
• To highlight key CPET findings for assessing HF severity and prognosis.

Main Methods:

• Review of existing literature on HF pathophysiology and CPET.
• Discussion of cardiovascular and respiratory parameters measured during CPET.

Main Results:

• CPET is a reliable method for evaluating early and prognostic features of both HFpEF and HF with reduced ejection fraction.
• CPET findings correlate with the severity of exercise impairment and prognosis in HF patients.

Conclusions:

• CPET should be more widely applied in the early diagnosis and assessment of HFpEF.
• Understanding CPET findings is crucial for managing HF patients.