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As the heart muscle, or myocardium, has to pump against the ever-increasing
resistance caused by the narrowed vessels, it too eventually becomes
damaged. The abrupt interruption of blood flow and thus oxygen supply
that occurs in a heart attack likewise damages the heart muscle.
The consequences of this damage to the heart muscle are known as
chronic
heart failure. The greater the damage to the heart muscle, the
less blood the heart is able to pump. |
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