What is Heart Failure?

Less blood can enter your heart, and the blood pressure in your lungs goes up. When you have diabetes, high blood pressure, or other heart and bloo...

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Heart Rate

When your heart speeds up, like when you exercise, your blood vessels should expand to let more blood pass through. One way to get a rough estimate...

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What is Edema?

This swelling in the arms and legs is most often caused by damage to your lymph nodes, tissues that help filter germs and waste from your body. Whe...

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