Heart Disease Medical Reference

The Lazarus phenomenon is when a person who seems to be dead shows signs of life again. How does it happen? And is it always reported?

What affects your body going into shock? While there are different types of shock, they occur because your blood flow is disrupted.

Myoglobin is a protein that helps store oxygen in your muscle tissues. Learn about normal levels of myoglobin and what it means to have high amounts in your blood.

Find out what you need to know about anasarca. Learn about its causes, symptoms, diagnosis, and treatment.

Find out what you need to know about restenosis, and discover what causes it, how it's treated, and how it may affect health.

Learn about vasospasm, including how narrowed arteries cause cerebral vasospasm, coronary artery vasospasm, and Raynaud syndrome.

Learn what Swan-Ganz catheter is and how it is used to monitor, test, and treat various heart issues.

Coronary artery spasms are a medical condition where your artery temporarily either blocks off or decreases blood flow to your heart. Learn about what brings them on, how they're treated, and more.

Learn more about sick sinus syndrome, how it impacts your health, and what to do to treat and prevent it.

Non-ST Segment Elevation Myocardial Infarction is a type of heart attack. Learn about the causes, symptoms, and treatment options for this condition today.

A MUGA scan is a test that shows how much blood your heart pumps with each heartbeat. Learn about how it works, what happens during the test, and more.

Learn what an aortobifemoral bypass is, why you might need one, and more.

Learn about agonal breathing and discover what to do when it happens.

If you have a bundle branch block, it may cause a glitch in the electrical impulses that make your heart beat.

Learn what subacute bacterial endocarditis is, what causes it, and how it's treated.

Learn more about the different types of tests that can help your doctor diagnose a heart condition.

Heart palpitations can happen for many reasons. Learn how to know when a fluttering or pounding heart is an emergency.

Heart beating too fast? It could be atrioventricular reentrant tachycardia (AVRT), a condition caused by an extra connection between the upper and lower chambers of your heart. Find out what causes it and how to treat it.

Get the facts on a heart rhythm condition called catecholaminergic polymorphic ventricular tachycardia (CPVT), including its causes, diagnosis, and treatment.

Stokes-Adams syndrome is a condition where you suddenly feel faint and can lose consciousness. It’s caused by a change in your heart rate.

In a normal heart rhythm, your heartbeat is steady and even. But sometimes, an extra heartbeat can disrupt the rhythm. A pattern of three beats is called trigeminy, and it happens in many healthy people.

Paroxysmal supraventricular tachycardia is when the upper chambers of your heart has a faster than average heart rate. Learn more about this condition and its treatment.

Junctional tachycardia occurs when your heart rate is faster than normal due to an issue in the upper and lower heart chambers. Learn about this condition and its treatment today.

Does your heart seem to beat fast for no reason? You might have inappropriate sinus tachycardia. Learn more about this condition and when to get treatment.

Find out what might trigger an ectopic beat -- also called an early, missed, or extra heartbeat -- and how you can treat it.