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.
In heart bypass surgery, a blood vessel from another part of the body is used to create a detour around a blockage in an artery so blood and oxygen can reach the heart. It might be used to treat coronary artery disease after other treatments, such as medication or angioplasty, have been tried.