His heart had pumped too much blood through them at top pressure.

It means the heart can't pump enough blood to meet the body's needs.

They provide little help if the heart is pumping almost nothing at all, he said.

A large, powerful heart could pump a lot of blood.

Her heart pumped something like fear, even at the memory.

"But the heart itself is pumping right along, and I think it's doing well."

"In some patients, the rate at which their heart can pump blood has almost doubled."

My heart was still pumping, and I struggled to remember.

Then, your heart can pump more blood with each heartbeat.

My heart was pumping so hard that I felt actual physical pain.