Cardiomyopathy is the abnormal enlargement of the heart due to the organ's inability to pump blood efficiently. As a result, the kidneys cannot filter blood properly, causing fluid retention that leads to congestion and swelling, especially in the arms and legs. Cardiomyopathy may not have any symptoms, or they may be mistaken for other issues. As the condition worsens, individuals can experience shortness of breath and fatigue and develop an arrhythmia that causes extrasystole heartbeats, dizziness, and fainting.
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