The pathophysiology of diastolic heart failure
نویسندگان
چکیده
Whilst resting disturbances of both diastolic and long-axis systolic function are observed in patients with heart failure who have normal left ventricular ejection fraction, recent evidence suggests that dynamic disturbances in cardiac function occur during exercise. A paradoxical slowing of left ventricular active relaxation during exercise limits cardiac filling and therefore stroke volume and appears to be due to the combination of cardiac energetic impairment and disturbed ventricular-vascular coupling.
منابع مشابه
Similarities and Differences between the Pathogenesis and Pathophysiology of Diastolic and Systolic Heart Failure
Pathophysiology of heart failure has been considered to be a damaged state of systolic function of the heart followed by a state of low cardiac output that is, systolic heart failure. Even if systolic function is preserved, left ventricular filling in diastole can be impeded and resulted in elevation of filling pressure and symptoms of heart failure. This kind of heart failure is called diastol...
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In contrast to systolic heart failure (SHF), for which knowledge of pathophysiology and therapy has advanced rapidly over the past decade, little is known about diastolic heart failure (DHF). The article by van Heerebeek et al1 in this issue of Circulation that describes an abnormal distribution of titin isoforms in DHF may herald a new approach to understanding the pathophysiology of this synd...
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