1.   High blood pressure means the heart is straining to pump blood.

2.   The valves in the heart control how quickly the blood is pumped around the body.

3.   The function of the heart is to pump blood through the body.

4.   Your heart pumps blood all over your body.

5.   At the same time, they would be hooked up to machine that would fill their lungs with air and pump blood through their arteries.

6.   Blood is pumped through a heart-lung machine during that period.

7.   A damaged heart does not pump enough blood to the lungs for oxygenation, Kiley said.

8.   But the swelling prevented the heart from contracting sufficiently to pump blood.

9.   But the oversized, misshapen heart cannot pump blood efficiently, and the struggle may turn into a vicious cycle of deterioration.

10.   But the rest of these patients need some kind of total heart replacement, because neither side of their hearts pumps sufficient blood.