3 doctors weighed in:

Why is the pain of angina brought on by exercise and stress?

3 doctors weighed in
Dr.

In brief: Reduced blood flow

If you have angina, one or more of your heart (coronary) arteries is narrowed.
This causes a reduced blood supply to your heart muscle. When your heart works harder (when you walk fast or climb stairs and your heart rate increases) your heart muscle needs more blood and oxygen. If the extra blood that your heart needs cannot get past the narrowed coronary arteries, the heart responds with pain

In brief: Reduced blood flow

If you have angina, one or more of your heart (coronary) arteries is narrowed.
This causes a reduced blood supply to your heart muscle. When your heart works harder (when you walk fast or climb stairs and your heart rate increases) your heart muscle needs more blood and oxygen. If the extra blood that your heart needs cannot get past the narrowed coronary arteries, the heart responds with pain
Dr.
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Dr. Stephen Southard
Internal Medicine
1 doctor agrees

In brief: Because

Angina is related to impaired blood flow.
At rest the heart is better able to tolerate "clogged" pipes but it doesn't require a high flow rate. Under stress, like exercise, "clogged" pipes are a problem. Because of obstructions, the flow can't appropriately increase even though the heart require more blood flow/nutrients. The lack of nutrients damages the cells of the heart and leads to pain.

In brief: Because

Angina is related to impaired blood flow.
At rest the heart is better able to tolerate "clogged" pipes but it doesn't require a high flow rate. Under stress, like exercise, "clogged" pipes are a problem. Because of obstructions, the flow can't appropriately increase even though the heart require more blood flow/nutrients. The lack of nutrients damages the cells of the heart and leads to pain.
Dr. Stephen Southard
Dr. Stephen Southard
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Dr. Aaron Milstone
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