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Diastolic dysfunction in exercise and its role for exercise capacity.

A Barmeyer¹, K Müllerleile, K Mortensen

¹Department of Cardiology/Angiology, Center for Cardiology and Cardiovascular Surgery, University Hospital Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany. barmeyer@uke.uni-hamburg.de

Heart Failure Reviews

|September 2, 2008

Summary

This summary is machine-generated.

Diastolic dysfunction, common in older adults and those with heart conditions, reduces exercise capacity and can cause heart failure. Exercise training may improve capacity but rarely diastolic function itself.

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Area of Science:

Cardiology
Geriatrics
Internal Medicine

Background:

Diastolic dysfunction is prevalent in elderly individuals and patients with left ventricular hypertrophy, vascular disease, and diabetes mellitus.
It is associated with reduced exercise capacity and can manifest as congestive heart failure (CHF), particularly heart failure with normal ejection fraction (HFNEF) or diastolic heart failure (DHF).

Purpose of the Study:

To explore the pathophysiological mechanisms underlying reduced exercise capacity in diastolic dysfunction.
To investigate the impact of exercise training and pharmacological interventions on exercise capacity and diastolic function in affected patients.

Main Methods:

The study reviews pathophysiological alterations contributing to diastolic dysfunction and its clinical consequences.
It examines existing literature on the effects of exercise training and pharmacological treatments on patients with diastolic dysfunction.

Main Results:

Pathophysiological changes include slowed myocardial relaxation, reduced distensibility, elevated filling pressures, and decreased ventricular suction, limiting diastolic filling and cardiac output during exercise.
Exercise training can improve exercise capacity and prevent age-related diastolic function decline.
While exercise and medication can enhance exercise capacity in patients, significant improvement in diastolic function itself is observed in only a limited number of cases.

Conclusions:

Diastolic dysfunction significantly impairs exercise capacity due to specific pathophysiological alterations.
Exercise training is beneficial for improving exercise capacity in patients with diastolic dysfunction.
Therapeutic strategies should focus on enhancing exercise capacity, as direct improvement of diastolic function remains challenging.