A slow heartbeat may not always raise immediate concern, but in many people, it signals an underlying heart rhythm disorder known as bradycardia. Defined as a resting heart rate of fewer than 60 beats ...
Transthyretin amyloid cardiomyopathy (ATTR-CM) is a condition that makes the heart stiff and less flexible, making it harder for the heart to pump. ATTR-CM doesn't always cause symptoms. When it does, ...
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