Major geographical features of Botswana. The Kalahari a waterless place, a vast arid to semi-arid area in Southern Africa covering much of Botswana and parts of Namibia and South Africa.
Medical Definition of bypass. : a surgically established shunt cardiopulmonary bypass of blood from the right atrium to the aorta; also : a surgical procedure for the establishment of a shunt âWhen a bypass is performed on more than one coronary artery or branch, the number of times (double, triple, etc.) is often specified. bypass.
Heart bypass surgery, also called coronary artery bypass graft (CABG) surgery, is a treatment for coronary artery disease or atherosclerosis. Heart bypass surgery involves the creation of a new route for blood to flow around narrowed or blocked coronary arteries. Your coronary arteries are the blood vessels that supply your heart muscle with blood. The newly created route is made with a graft. A graft is a healthy blood vessel taken from other places in your body. Atherosclerosis is a common cause of narrowed or blocked coronary arteries.