bifurcation lesion

bifurcation lesion

A term for an atherosclerotic lesion of the coronary arteries at a bifurcation.

Classification of bifurcation lesions
Y-shaped lesion
The angulation between side branch and main vessel is <70º; side branch access is usually easy, but plaque shift pronounced.

T-shaped lesion
Angle between side branch and main vessel is >70º; side branch access may be difficult, but plaque shift less pronounced.
 
Type 1–4 lesions
Type 1—True bifurcation lesion involving main vessel, proximal and distal to the side branch, and the ostium of the side branch.

Type 2—Bifurcation lesion involving main vessel proximal and distal to the side branch, but no involvement of side branch ostium.

Type 3—Bifurcation lesion involving main vessel proximal, but not distal to the side branch and without involvement of side branch ostium.
 
Type 4—Bifurcation lesion involving the distal main vessel and the ostium of the side branch.
      4a—Bifurcation lesion involving main vessel distal, but not proximal to the side branch and without involvement of side branch ostium.
      4b—Bifurcation lesion involving the side branch ostium only.
References in periodicals archive ?
The variables tested in the multivariable models included age, gender, hypertension, diabetes, hypercholesterolemia, previous cerebrovascular accident, current smoker, MI history, anterior MI, single-vessel disease, ostial lesion, bifurcation lesion, total occlusion, type B2 or C lesion, preprocedural TIMI flow grade, postprocedural TIMI flow grade, number of stents per patient, diameter of stent, total stent length, IABP support, and thrombus aspiration and were selected by forward stepwise method.
sup][1] Risk factors for SF include excessive tortuosity, angulation, bifurcation lesion or change in angulation following stent implantation of coronary vessels.
The study involved 178 consecutive patients who underwent percutaneous coronary intervention for a de novo bifurcation lesion treated with a Genous Stent and 465 consecutive patients treated with BMS.
In patients undergoing PCI-stenting, approximately one third have a bifurcation lesion.
The lower angiographic restenosis rate in the bifurcation lesion after culotte stenting as compared with TAP stenting was also associated with lower rate of target lesion revascularisation (TLR) in the first year after PCI.
In patients undergoing PCI-stenting, approximately one-third have a bifurcation lesion.
The usual angle of LAD and LCX is >90[degrees], whereas the angle between the main branch and the side branch in a non-LMCA bifurcation lesion is <90[degrees].
Background: The crush and the culotte stenting were both reported to be effective for complex bifurcation lesion treatment.
In our study, inclusion criteria were: (1) Patients with coronary bifurcation lesions undergoing PCI; and (2) the bifurcation lesion consists at least one major SB.
Five-year clinical follow-up of unprotected left main bifurcation lesion stenting: One-stent versus two-stent techniques versus double-kissing crush technique.
Figure 2] illustrates how the novel (NOV) technique is employed for measuring FFR in a patient with a bifurcation lesion.
A recent survey carried out on behalf of Cappella Medical and published in the May/June edition of Coronary Heart magazine, invited clinicians across Europe to share their views on the challenges and opportunities for improvement in the treatment of bifurcation lesion treatment (BLT).