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Understanding Heart Disease

Clip Number: 3 of 37
Presentation: Angioplasty With Possible Stent
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Reviewed By: Arthur Schoenstadt, MD
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Now that you have seen how a healthy heart works, we will discuss the different heart diseases that can affect your heart valves, your coronary arteries and the pumping ability of your heart.
Heart valves are made of thin flaps of tissue that open and close to let blood through. Sometimes valves will stenose, or narrow. When this happens, blood is forced through a smaller opening than normal. Less blood circulates through the heart and to the rest of the body.
Another problem related to valves is called incompetence, also called regurgitation or leakage. This occurs when a valve does not close properly, allowing blood to leak backwards.
While there are four valves in the heart, during a cardiac catheterization, your doctor is only able to look at two of them, the aortic and the mitral.
Heart disease in the coronary arteries occurs when they become clogged from a buildup of cells, fat and cholesterol. This buildup is called plaque. As the inside of the coronary arteries gather plaque and narrow, they restrict the flow of blood and oxygen to the heart muscle.
Without proper blood and oxygen, the heart muscle eventually weakens and deteriorates. This decreases the heart's ability to pump normally.
When you are doing an activity that requires physical effort, your heart muscle demands more blood and oxygen. But, if the coronary arteries are narrowed or blocked, valves are not functioning properly, or the heart is not pumping effectively, this need cannot be met. As a result, you may experience symptoms such as angina, or chest pain, irregular heartbeats, and shortness of breath. These symptoms may indicate heart disease, which can lead to a stroke, heart attack or even heart failure.

Angioplasty With Possible Stent


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