bifurcation


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Related to bifurcation: Bifurcation theory, Bifurcation diagram

bifurcation

 [bi-fur-ka´shun]
1. a division into two branches, such as a blood vessel, or a tooth that has two roots.
Bifurcatio aortae (aortic bifurcation), showing the branching of the abdominal aorta into the common iliac arteries, and from there to the internal and external iliac arteries. From Dorland's, 2000.
2. the site of such a division.

bi·fur·ca·tion

(bī'fŭr-kā'shŭn), [TA]
A forking; a division into two branches.
Synonym(s): bifurcatio [TA]

bifurcation

Theoretical medicine
A point in a dynamic system in which there is an abrupt change in the system’s behaviour; bifurcations occurs when 1+ of a system’s parameters reach a critical value. A change in the stability or types of solutions which occur as a parameter is varied in a dissipative dynamic system; the change can be seen as a bifurcation point in a graph of the parameter being varied vs one of the properties of the solutions.
 
Vox populi
A splitting into 2 parts.

Clinical trials
BIFURCATION
Evaluation of the Cypher sirolimus-eluting stent in the treatment of patients with bifurcation. A trial comparing the use of either one drug-eluting stent in the main branch and provisional stenting in the side branch or definitive stents in both vessels.
 
Results
Major acute cardiac events and target vessel revascularisation in CABG patients was 19% in stent + provisional stent patients and 14% in stent + PTCA (definitive) patients.

Logistics
Randomised, multicentre, US; 86 patients

bi·fur·ca·tion

(bī'fŭr-kā'shŭn) [TA]
A forking; a division into two branches.

bifurcation

A fork or double prong. Bifurcations are very common in blood vessels and in the bronchial ‘tree’ of the lungs. At a bifurcation the sum of the cross-sectional area of the two branches usually exceeds that of the parent branch. Since this happens many times, there is a progressive increase in the unit volume of the system.

bi·fur·ca·tion

(bī'fŭr-kā'shŭn) [TA]
A forking; a division into two branches.
References in periodicals archive ?
Nijmeijer, Dynamics and Bifurcation of Non-Smooth Mechanical Systems, vol.
But the propagation direction of the gas explosion shock wave along the roadway may be reversed during the disaster and the shock wave does not propagate in the direction of wind flow, so the bifurcation angles more than 90 degrees of the experimental pipe for the gas explosion shock wave experiment was set up to simulate the actual situation in the mine roadway.
In the clinical case series, a statistically significant negative correlation was observed between bifurcation length and spread above the bifurcation (p = 0.01), such that a shorter bifurcation length correlated with a greater degree of local anesthetic extension proximal to the bifurcation.
If Fold bifurcation occurs at the equilibrium point of (11), the following conditions must be satisfied:
First let [gamma] = 0.1 and [beta] = 0.2,0.25,0.3, respectively; then three ([alpha], e1) 2D bifurcation diagrams are shown in Figures 4, 5, and 6.
Changing q from 0.984 to 0.988, we can see that there is a steady-state periodic EMR with period 2T indicated in Figures 4(c) and 4(d), which also is observed from the bifurcation diagram in Figure 2.
He said that bifurcation would put the district on the way to development as it has doubled the number of tehsils to four from two while it also create new jobs and development opportunities for the neglected and remote district.
Level and angle of basilar artery bifurcation. Most (164; 94.8 %) terminated at the ponto-mesencephalic junction.
Mehran Khorsandi is an interventional cardiologist who experienced great frustration in using stents to treat bifurcation lesions.
MULTAN:Multan Electric Power Company (MEPCO) has completed bifurcation and
MULTAN -- Multan Electric Power Company (MEPCO) has completed bifurcation and upgradation work of two feeders to ensure provision of electricity with best voltage.