Can you please explain what is cholesterol/high-density lipoprotein and the significance of a high HDL cholesterol value? What about non-HDL cholesterol? I have had cholesterol tests for ...

As a whole, cocaine-associated electrocardiographic abnormalities are well described in the literature (primarily in the form of observational studies, small controlled studies and case reports ...

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Ejection fraction (EF) measures how well the heart pumps blood. A normal EF is 55% to 70%, meaning the heart pumps out at least half of the blood in its left ventricle with each beat. An EF below 50% ...

Sudden cardiac arrest symptoms include sudden loss of consciousness, responsiveness, breathing, and pulse. This may be preceded by dizziness, shortness of breath, a racing heartbeat, or abnormal ...