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Pathophysiology
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===Heart failure=== The [[pathophysiology of heart failure]] is a reduction in the efficiency of the heart muscle, through damage or overloading. As such, it can be caused by a wide number of conditions, including myocardial infarction (in which the heart muscle is [[ischemia|starved of oxygen]] and dies), hypertension (which increases the force of contraction needed to pump blood) and [[amyloidosis]] (in which misfolded proteins are deposited in the heart muscle, causing it to stiffen). Over time these increases in workload will produce changes to the heart itself.
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