coronary bypass


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Related to coronary bypass: Cardiac catheterization

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.

cor·o·nar·y by·pass

(kōr'ŏ-nār-ē bī'pas)
Vein grafts or other conduits shunting blood from the aorta to branches of the coronary arteries, to increase the flow beyond the local obstruction.
References in periodicals archive ?
A total of 150 patients undergoing elective coronary bypass graft (CABG) were studied comparatively, IMA (+- vein) 106 patients (71%) and vein graft only 44 patients (29%) (table-I).
Similarly, obesity is also considered an independent risk factor for mediastinitis.22 A study in Melbourne showed an odds ratio of 2.4 between individuals having a BMI greater than 30 and having post-operative deep sternal wound infection after coronary bypass surgery irrespective of the conduits used.23 In our study, of the 48 patients, 3 individuals had a BMI greater than 30 and none of those developed sepsis or wound infection after surgery (p =0.33).
The research demonstrates the potential for eventually growing tissue-engineered vessels (TEVs) out of stem cells harvested from the patients who need them, providing a desirable alternative to the venous grafts now routinely done in patients undergoing coronary bypass operations.
Coronary bypass surgery with internal-thoracic-artery grafts--effects on survival over a 15-year period.
Former Malaysian Prime Minister Mahathir Mohamad, who suffered two heart attacks in the past 10 months, is scheduled for a coronary bypass surgery Tuesday, a hospital statement said Monday.
Now researchers have hard evidence that it also curbs the risk of having a heart attack, stroke, coronary bypass, angioplasty, or other "cardiovascular event."
The study used patients who had undergone coronary bypass surgery 1-11 years prior to their enrollment.
Women who have suffered a heart attack are offered a procedure to open blocked arteries (such as coronary bypass or angioplasty) less often than men.
Researchers studied 57 patients who had undergone coronary bypass surgery one year earlier and who had not responded to the statin drug Zocor.
Food and Drug Administration (F.D.A.) to change the labeling in attempt to limit its use to people undergoing coronary bypass surgery at a high risk of blood loss.
Research: Seventy-two hypercholesterolemic patients (ages 43-71 years) were recruited after coronary bypass surgery and randomly divided into two experimental groups and one control group, each comprising 24 patients.
"Hardware and software developments combined with new contrast agents will certainly improve image quality, and the assessment of coronary bypass grafts by MR may therefore offer an attractive alternative to invasive angiography and MSCT in the future," he said.