jejunoileal bypass

(redirected from bowel bypass)

bypass

 [bi´pas″]
an auxiliary flow; a shunt; a surgically created pathway circumventing the normal anatomical pathway, such as in an artery or the intestine.
Bypass. Single artery bypass of an occluded right coronary artery. From Dorland's, 2000.
aortocoronary bypass coronary artery bypass.
aortofemoral bypass insertion of a vascular prosthesis from the aorta to the femoral artery to bypass atherosclerotic occlusions in the aorta and the iliac artery.
aortoiliac bypass insertion of a vascular prosthesis from the abdominal aorta to the femoral artery to bypass intervening atherosclerotic segments.
axillofemoral bypass insertion of a vascular prosthesis or section of saphenous vein from the axillary artery to the ipsilateral femoral artery to relieve lower limb ischemia in patients in whom normal anatomic placement of a graft is contraindicated, as by abdominal infection or aortic aneurysm.
axillopopliteal bypass insertion of a vascular prosthesis from the axillary artery to the popliteal artery to relieve lower limb ischemia in patients in whom the femoral artery is unsuitable for axillofemoral bypass.
cardiopulmonary bypass diversion of the flow of blood from the entrance to the right atrium directly to the aorta, usually via a pump oxygenator, avoiding both the heart and the lungs; a form of extracorporeal circulation used in heart surgery.
coronary bypass (coronary artery bypass) a section of saphenous vein or other conduit grafted between the aorta and a coronary artery distal to an obstructive lesion in the latter; called also aortocoronary bypass.
extra-anatomic bypass an arterial bypass that does not follow the normal anatomic pathway, such as an axillofemoral bypass.
extracranial/intracranial bypass anastomosis of the superficial temporal artery to the middle cerebral artery to preserve function or prevent stroke or death in patients with stenosis of the internal carotid or middle cerebral artery.
femorofemoral bypass insertion of a vascular prosthesis between the femoral arteries to bypass an occluded or injured iliac artery.
femoropopliteal bypass insertion of a vascular prosthesis from the femoral to the popliteal artery to bypass occluded segments.
gastric bypass see gastric bypass.
hepatorenal bypass insertion of a vascular prosthesis between the common hepatic artery and the renal artery, serving as a passage around an occluded segment of renal artery.
intestinal bypass (jejunoileal bypass) see intestinal bypass.
left heart bypass diversion of the flow of blood from the pulmonary veins directly to the aorta, avoiding the left atrium and the left ventricle.
partial bypass the deviation of only a portion of the blood flowing through an artery.
partial ileal bypass anastomosis of the proximal end of the transected ileum to the cecum, the bypass of the portion of the small intestine resulting in decreased intestinal absorption of and increased fecal excretion of cholesterol; sometimes used in treatment of hyperlipidemia.
right heart bypass diversion of the flow of blood from the entrance of the right atrium directly to the pulmonary arteries, avoiding the right atrium and right ventricles.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

je·ju·no·il·e·al by·pass

anastomosis of the upper jejunum to the terminal ileum for treatment of severe obesity.
Farlex Partner Medical Dictionary © Farlex 2012

je·ju·no·il·e·al by·pass

(jĕ-jū'nō-il'ē-ăl bī'pas)
Anastomosis of the upper jejunum to the terminal ileum for treatment of morbid obesity.
Synonym(s): bowel bypass.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

jejunoileal bypass

A surgical procedure for decreasing absorption of nutrients from the small intestine by anastomosing the proximal jejunum to the distal ileum. Although it can be used to treat obesity, jejunoileal bypass has been replaced by gastric bypass procedures because of the significant complications of jejunoileal bypass surgery.
See also: bypass
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Bowel bypass surgery, which involves shortening the small bowel to about 45 cm, is a modality of treatment for morbid obesity.
Bowel bypass surgery is a weight-reduction modality offered to morbidly obese patients.
Diagnoses of bowel bypass syndrome and cavitating pneumonia were made.
These qualitative and quantitative changes in the intestinal bacterial content of the bowel are considered to be the underlying cause of bowel bypass syndrome.
Pneumonia as a possible component of bowel bypass syndrome has not been mentioned or addressed in the medical literature.
Proposed treatments of bowel bypass syndrome have included low-dose steriods, tetracycline or minocycline, and sulfapyrazine or metronidazole.
The bowel bypass syndrome: a response to bacterial peptidoglycans.
Maintenance of weigh t loss in patients with body mass index > 60 kg/[m.sup.2]: importance of length of small bowel bypassed. Surg Obes Relat Dis 2008;4:404-6.
Much of the stomach is removed and part of the small bowel bypassed. Less radical is the 'gastric sleeve', which involves removing a large part of the stomach leaving a narrowed smaller stomach, restricting food intake and at the same time speeding the passage of food to the gut.