With heart failure, the heart can't pump enough blood throughout the body. (health.com)
If the heart beats too slowly, the brain and body do not get enough blood flow and a variety of symptoms may result. (circ.ahajournals.org)
Because her high blood pressure had gone untreated for years, her heart muscle had been damaged and was now unable to pump enough blood for her body's needs. (discovermagazine.com)