Diastolic heart failure (Diastolic Heart Failure, DHF) refers to the ventricular systolic function was normal or mildly reduced circumstances, ventricular muscle relaxation and compliance decreased ventricular filling and reduce filling pressures, leading to pulmonary circulation and systemic circulation of a clinical syndrome.
DHF is a heart failure caused by ventricular diastolic dysfunction and ventricular insufficiency. Ventricular diastolic dysfunction can be a diastolic dysfunction that slows or incomplete ventricular filling and / or ventricular filling disorder due to poor ventricular compliance and limited expansion. In order to increase the filling of the ventricles, a series of symptoms resulting from increased pulmonary venous pressure are required to increase the pressure of the venous return. So, from a pathophysiological point of view, diastolic heart failure is a compensatory state of the left ventricle that requires normal left ventricular filling and heart volume by increasing left ventricular filling pressure. The hemodynamic features include left ventricular volume decrease and diastolic end pressure elevation, with normal or mild reduction of LVEF.
The clinical manifestation of diastolic dysfunction is similar to that of systolic dysfunction, and it is difficult to differentiate clinically.
1, typical symptoms: symptoms of tired heart palpitations, varying degrees of difficulty breathing. There are signs of jugular venous distention, liver, pulmonary edema, two bottom rales, alternating pulse, diastolic gallop and fourth heart sound. Severe left ventricular diastolic dysfunction affects the right ventricle through the interventricular septum, resulting in diastolic dysfunction of the right ventricle, which produces the same symptoms and signs as those with systolic dysfunction.
2, the chest X-ray examination: pulmonary venous pressure rise Takami upper lung texture enhancement, lung texture fine, lung shadow expand. Pulmonary edema showed Kerler line. The pulmonary edema is seen as a cloudy or cloudy image of increased density.
3 、 electrocardiogram examination: U diastolic wave is seen in patients with partial diastolic dysfunction.
DHF is a heart failure caused by ventricular diastolic dysfunction and ventricular insufficiency. Ventricular diastolic dysfunction can be a diastolic dysfunction that slows or incomplete ventricular filling and / or ventricular filling disorder due to poor ventricular compliance and limited expansion. In order to increase the filling of the ventricles, a series of symptoms resulting from increased pulmonary venous pressure are required to increase the pressure of the venous return. So, from a pathophysiological point of view, diastolic heart failure is a compensatory state of the left ventricle that requires normal left ventricular filling and heart volume by increasing left ventricular filling pressure. The hemodynamic features include left ventricular volume decrease and diastolic end pressure elevation, with normal or mild reduction of LVEF.
1, typical symptoms: symptoms of tired heart palpitations, varying degrees of difficulty breathing. There are signs of jugular venous distention, liver, pulmonary edema, two bottom rales, alternating pulse, diastolic gallop and fourth heart sound. Severe left ventricular diastolic dysfunction affects the right ventricle through the interventricular septum, resulting in diastolic dysfunction of the right ventricle, which produces the same symptoms and signs as those with systolic dysfunction.
2, the chest X-ray examination: pulmonary venous pressure rise Takami upper lung texture enhancement, lung texture fine, lung shadow expand. Pulmonary edema showed Kerler line. The pulmonary edema is seen as a cloudy or cloudy image of increased density.
3 、 electrocardiogram examination: U diastolic wave is seen in patients with partial diastolic dysfunction.
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