Heart Health Medical Reference

Find out the differences between arteries, veins, and capillaries and the role they play in your body.

Pneumopericardium is when you have gas or air in the sac around your heart. Learn about the causes, symptoms, and treatment options for this condition today.

Myocardial contusion is a bruise to the heart muscle. Learn about the causes, symptoms, and treatment options for this condition today.

Find out the differences between arteries and veins and discover the roles of each.

The location of the popliteal pulse is behind your knee. Learn more about what causes it, what to expect, and more.

Learn more about dextrocardia and its different types, symptoms, and effects on health.

Heart rate variability is the time between each heartbeat. Find out what affects your HRV, and the importance of tracking your HRV.

Cardiac output is defined as the amount of blood your heart pumps. Learn about the normal output rate, how it's measured, and causes of low cardiac output.

Ejection fraction measures the amount of blood pumped out of your heart’s lower chambers, or ventricles. Learn more about how ejection fraction is measured, normal ejection fraction percentages, low and high ejection fraction measurements, and how low ejection fraction is treated.

Orthostatic hypotension or postural hypotension can make you feel lightheaded or dizzy when standing up. Here's what causes it and how to manage it.

If you have a leaky heart valve, you may have surgery to repair or replace it. WebMD tells you what to expect.

Learn about two devices -- an ICD and pacemaker -- that can help you keep your heart beating correctly.

WebMD helps you understand the conditions that affect your heart and the habits that can help prevent or manage them.

Find out how to keep your numbers in check

WebMD provides information about the anatomy of the carotid artery. Find a picture, definition, and conditions that affect the artery.

WebMD provides a diagram and medical information about the anatomy of the arteries.

WebMD offers questions to ask your doctor about low blood pressure, or hypotension.

WebMD explains the causes, symptoms, and treatments for mitral valve prolapse.

A leaky heart valve may cause no problems or it may signify congestive heart failure. WebMD takes a look at the causes, symptoms, and treatments for a leaky heart valve.

WebMD describes the anatomy of human blood including what makes up our blood and how circulation works.

WebMD's Aorta Anatomy Page provides a detailed image and definition of the aorta. Learn about its function and location as well as conditions that affect the aorta.

WebMD's Heart Anatomy Page provides a detailed image of the heart and provides information on heart conditions, tests, and treatments.

WebMD looks at the herb astragalus root and whether or not it offers any specific heart benefits.

WebMD examines the use of arginine (L-arginine) to improve heart health. Find out where it comes from, if supplementation works, and its possible side effects.

They call HDL cholesterol your "good" cholesterol for a reason. Here are tips from WebMD for increasing your level of HDL cholesterol and boosting heart health.