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Heart failure with preserved ejection fraction (HFpEF) is a form of heart failure in which the ejection fraction – the percentage of the volume of blood ejected from the left ventricle with each heartbeat divided by the volume of blood when the left ventricle is maximally filled – is normal, defined as greater than 50%; [1] this may be measured by echocardiography or cardiac catheterization.
Heart failure, or formally cardiomyopathy, is the impaired function of the heart, and there are numerous causes and forms of heart failure. The causes of cardiomyopathy can be genetic, viral, or lifestyle-related. Key symptoms of cardiomyopathy include shortness of breath, fatigue, and irregular heartbeats.
The higher the BP, the greater is the chance of heart attack, heart failure, stroke, and kidney disease. For individuals 40–70 years of age, each increment of 20 mm Hg in systolic BP (SBP) or 10 mm Hg in diastolic BP (DBP) doubles the risk of CVD across the entire BP range from 115/75 to 185/115 mm Hg.”.
Studies showed tafamidis reduced mortality and hospitalization due to heart failure. [5] Previously, for variant ATTR amyloidosis, liver transplant was the only effective treatment. [5] New therapies include diflunisal, inotersen, and patisiran. Diflunisal binds to misfolded mutant TTR protein to prevent its buildup, like how tafamidis works.
Pulse pressure is calculated as the difference between the systolic blood pressure and the diastolic blood pressure. [3] [4]The systemic pulse pressure is approximately proportional to stroke volume, or the amount of blood ejected from the left ventricle during systole (pump action) and inversely proportional to the compliance (similar to elasticity) of the aorta.
This is followed by sudden cardiac death in the absence of treatment. [2] Ventricular fibrillation is initially found in about 10% of people with cardiac arrest. [1] Ventricular fibrillation can occur due to coronary heart disease, valvular heart disease, cardiomyopathy, Brugada syndrome, long QT syndrome, electric shock, or intracranial ...
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