Heart failure

Heart failure Heart failure (HF), often referred to as congestive heart failure (CHF), is when the heart is unable to pump sufficiently to maintain blood flow to meet the body’s needs.[9][10][11] Signs and symptoms commonly include shortness of breath, excessive tiredness, and leg swelling.[2] The shortness of breath is usually worse with exercise, while lying down, and may wake the person at night.[2] A limited ability to exercise is also a common feature.[12] Chest pain, including angina, does not typically occur due to heart failure.[13] Common causes of heart failure…

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Sickle cell anemia

Overview Normal red blood cells and sickle cells Sickle cell anemia Sickle cell anemia is an inherited form of anemia — a condition in which there aren’t enough healthy red blood cells to carry adequate oxygen throughout your body. Normally, your red blood cells are flexible and round, moving easily through your blood vessels. In sickle cell anemia, the red blood cells become rigid and sticky and are shaped like sickles or crescent moons. These irregularly shaped cells can get stuck in small blood vessels, which can slow or block…

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