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.
Bypass surgery is a procedure used to create new passages for blood flow that have been blocked by clogged heart arteries. Two of the coronary arteries are bypassed during double bypass surgery. Double bypass surgery involves two coronary arteries, but the procedure can also be done on three or four vessels of the heart.