bifurcation

(redirected from Bifurcations)
Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.

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

/bi·fur·ca·tion/ (bi″fer-ka´shun)
1. a division into two branches.
2. the point at which division into two branches occurs.
Enlarge picture
Carotid bifurcation: the site of division of the common carotid artery into the external and internal carotid arteries.

bifurcation

[bī′fərkā′shən]
Etymology: L, bis + furca, fork
a splitting into two branches, such as the trachea, which branches into the two bronchi.

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.

bifurcation

division from a common origin into two equal parts, e.g. the division of a blood vessel into two equal-sized vessels

bi·fur·ca·tion

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

bifurcation (bī´furkā´shən),

n the division of a tooth's roots into two parts or branches.

bifurcation

1. a division into two branches.
2. the point at which division into two branches occurs.

tracheal bifurcation
termination of the trachea, where it divides into two principal bronchi.
References in periodicals archive ?
There were 518 patients with bifurcation lesions that needed SB protection within 26 months.
These included a highly significant difference in binary in-stent restenosis at the bifurcation lesion (6.
In Section 2, the conditions for the emergence of Neimark-Sacker bifurcation are reviewed.
In this section, we suppose that system (3) undergoes a Hopf bifurcation from equilibrium [E.
After the second stage, a bifurcation model formed around this material must be separated.
Seventy-five CBCT scans previously diagnosed with bifurcation of the mandibular canal were obtained from the database of two private dental radiology clinics located in the cities of Sao Paulo, SP, and Joinville, SC, Brazil.
Bifurcation theory has been widely used to investigate dynamic behaviours of nonlinear components, and to make analytical answers on formation of synchronous resonance, dynamical behaviour of induction machines, chaotic oscillations and Ferro resonance oscillations phenomenon in electrical engineering.
Antares is a main vessel stent that is designed to adapt to a broad variety of bifurcation lesions and coronary anatomies to produce predictable results during provisional stenting.
Despite so much literature on the experiments and modelling of bifurcation behaviour of the NO-CO reaction on Pt catalysts, several questions are unanswered.
After a brief introduction motivating the use of bifurcation theory in economics and a mathematical review that nicely balances the non-specialist's needs for both accessibility and rigor, Rosser's book goes on to cover the broad scope of applications.
the leading developer of stents designed to treat bifurcation lesions, today announced an initial closing of an aggregate $24 million financing.