Related Experiment Videos
Exercise intolerance.
1Sections of Cardiology and Geriatrics, Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, USA.
Progress in Cardiovascular Diseases
|August 24, 2005
Summary
Patients with heart failure with normal ejection fraction (HFNEF) experience severe exercise intolerance. This condition is multifactorial, involving decreased diastolic compliance and other physiological changes, making it a key therapeutic target.
Area of Science:
- Cardiology
- Exercise Physiology
Background:
- Heart failure with normal ejection fraction (HFNEF) is characterized by severe chronic exercise intolerance.
- The underlying pathophysiology of this exercise limitation is not fully understood but is considered multifactorial.
Purpose of the Study:
- To explore the contributing factors to exercise intolerance in patients with HFNEF.
- To identify potential therapeutic targets for improving quality of life in these patients.
Main Methods:
- Review of current data and literature on HFNEF pathophysiology.
- Analysis of factors contributing to exercise intolerance in this patient population.
Main Results:
- Key contributors to exercise intolerance include decreased left ventricular (LV) diastolic compliance and aortic distensibility.
- Other significant factors identified are exaggerated exercise systolic blood pressure, chronotropic incompetence, anemia, and skeletal muscle remodeling.
Conclusions:
- Exercise intolerance in HFNEF is a complex condition influenced by multiple physiological abnormalities.
- Addressing these factors presents an attractive therapeutic strategy to improve patient quality of life.