Collateral circulation


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(Med. & Physiol.) circulation established through indirect or subordinate branches when the supply through the main vessel is obstructed.

See also: Collateral

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
There is a growing body of literature suggesting that patients with atherosclerotic middle cerebral artery (MCA) stenosis are at a higher risk of future ischemic stroke, and that the risk of future cerebral ischemic events would be low if the blood flow with unilateral MCA stenosis or occlusion is compensated by circle of Willis, or by the collateral circulation from cortical artery, otherwise, the patients would suffer from cerebral ischemia and anoxaemia.1-4
Ischemic buttock claudication is generally due to lesions of the common iliac or internal iliac vessels, especially if the collateral circulation is compromised (Hassen-Khodja et al., 1987).
In patients whose nutritional status is good, adequate collateral circulation is restored in 4 or 5 days.
Injury severity is inversely proportional to the mesenteric blood flow and is influenced by the number of vessels involved, systemic mean blood pressure, duration of ischemia, and collateral circulation.
Anomalous origin of the left coronary artery from the pulmonary artery in an adult with systemic collateral circulation to the left coronary artery.
Surgical repair remains the treatment of choice with a minimal failure rate.5 However, mortality after emergency surgery is as high as 40%, compared with negligible mortality after elective repair.6 Endovascular techniques have many possible advantages such as accurate localization of the aneurysm and easy assessment of collateral circulation.
The "telangiectatic spot" on the tongue almost vanished; CTA examination of case 2 indicated a smaller proximal hepatic artery and decreased or ceased hepatic artery collateral circulation. The Fli-EGFP zebrafish model manifested discontinuous vessel development and vascular occlusion (7 of 10 fishes), and the TGF-[sz]3 mRNA expression of five patients was lower after thalidomide therapy.
Extensive transpleural collateral circulation in the apices of the lung may mimic tuberculosis by producing an appearance known as pulmonary pseudofibrosis.
The proximal stenosis of left anterior descending branch was 50% and formed collateral circulation to the distal right coronary artery [Figure 1]b.
For extra-cardiac malformations, 12 patients were discovered to have pulmonary artery hypertension, 11 patients to have persistent ductus arteriosus [Figure 2], 6 patients to have bronchial artery dilation, 3 patients to have an aberrant right subclavian artery, 1 patient to have an isolated left subclavian artery [Figure 3], 1 patient to have aorta-pulmonary artery collateral circulation and 3 patients were identified having ascending aorta (AA)-descending aorta (DA) collateral circulation.
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