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.
Coronary Artery Bypass Grafting. Coronary artery bypass grafting (CABG) is a type of surgery called revascularization, used to improve blood flow to the heart in people with severe coronary artery disease (CAD). During CABG, a healthy artery or vein from another part of the body is connected, or grafted, to the blocked coronary artery.