Bypass
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  Bypass



Bypass

   A surgical procedure designed to increase blood flow to an organ or extremity that has narrowing or blockage of the blood supplying artery. Examples include coronary artery bypass surgery, aortic replacement, ABI (aorta-bi-iliac), ABF (aorto-bi-femoral), and femoral-popliteal bypass)

RELATED TERMS
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Blood
The life-maintaining fluid which is made up of plasma, red blood cells (erythrocytes), white blood cells (leukocytes), and platelets; blood circulates through the body's heart, arteries, veins, and capillaries; it carries away waste matter and carbon dioxide, and brings nourishment, electrolytes, hormones, vitamins, antibodies, heat, and oxygen to the tissues.

Organ
A structural unit of an animal or plant that serves a specific function.

Extremity
The extremities in medical language are not freezing cold or scorching heat but rather the uttermost parts of the body. The extremities are simply the hands and feet.

Artery
A blood vessel that carries blood from the heart to the body.

Bypass
A surgical procedure designed to increase blood flow to an organ or extremity that has narrowing or blockage of the blood supplying artery. Examples include coronary artery bypass surgery, aortic replacement, ABI (aorta-bi-iliac), ABF (aorto-bi-femoral), and femoral-popliteal bypass)

Surgery
Treating diseases or other medical conditions by operating on a patient to remove or repair parts of the body.

Aortic
Pertaining to the aorta, the largest artery in the body.



SIMILAR TERMS
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Bypass, cardiopulmonary
Bypass of the heart and lungs as, for example, in open heart surgery. Blood returning to the heart is diverted through a heart-lung machine (a pump-oxygenator) before returning it to the arterial circulation. The machine does the work both of the heart (pump blood) and the lungs (supply red blood cells with oxygen).



PREVIOUS AND NEXT TERMS
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Breathing Tube (endotracheal tube)
A temporary tube put into the nose or mouth. Anesthesia or air and oxygen pass through the tube allowing artificial breathing.

Bruit
An abnormal sound heard when a stethoscope is placed over an artery.


Most commonly affects the small and medium sized arteries, veins, and nerves. The arteries of the arms and legs become narrowed or blocked, causing lack of blood supply (ischemia) to the fingers, hands, toes and feet.

Bundle Branch
The electrical impulses travel down a normal pathway through the heart. From the SA node, the impulse travels to the AV node. Then it goes to the bundle of His. The bundle divides into a right bundle and the left bundle. The bundles take the impulse through the ventricles (bottom chambers) to cause them to contract.

Bundle Branch Block
Normally, the electrical impulse travels down both the right and left bundle branches at the same speed and the ventricles contract at the same time. If there is a block in one of the branches, it is called a bundle branch block. A bundle branch block causes one ventricle to contract just after the other ventricle.

Bypass

B variant GM2-gangliosidosis
See: Tay-Sachs disease.

B virus
An infectious agent commonly found among macaque monkeys, including rhesus macaques, pig-tailed macaques, and cynomolgus monkeys. Monkeys infected with this virus usually have no or mild symptoms. In humans, however, B virus infection can result in a fatal encephalomyelitis. B virus disease in humans is extremely rare, but often fatal -- an estimated 80% of untreated patients die of complications associated with the infection.

B(a)P
Benzo(a)pyrene.

B-type natriuretic peptide
A 32-amino-acid polypeptide secreted by the ventricles of the heart in response to excessive stretching of myocytes (heart muscles cells) in the ventricles. The levels of B-type natriuretic peptide (BNP) are elevated in patients with left ventricular dysfunction. BNP levels correlate with both the severity of symptoms and the prognosis in congestive heart failure.

B burgdorferi
"Short for Borrelia burgdorferi, the cause of Lyme disease. Once the full name of a bacterium has been given, it is customary to refer to it in its short form. For example, ""Borrelia burgdorferi...is responsible for Lyme disease, which can lead to debilitating symptoms in humans....Estimates from prior studies of ticks infected with B. burgdorferi in Mendocino County are higher."" See also: Borrelia."

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