heart disease patients

Mechanical valves are made of artificial materials, biological valves made from natural materials, usually from the pig's pericardium or the pericardium.

The results of the American scientists' study published in the September 4 issue of The Lancet show that in hospitals, only doctors need to extend breathing time for a few more

Australian scientists have invented a new device, which can help transfer energy to pacemakers without the need for a charging cable.