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 (CABG) is a type of surgery that uses arteries or veins from other areas in your body to bypass your narrowed coronary arteries. CABG can improve blood flow to your heart, relieve chest pain, and possibly prevent heart attack. Bypass grafting also can be used for leg arteries.