Nam CW, Hur SH, Koo BK, Doh JH, Cho YK, Park HS, Yoon HJ, Kim H, Chung IS, Kim YN, Fearon WF, Tahk SJ, Kim KB. Fractional flow reserve versus angiography in left circumflex ostial intervention after left main crossover stenting.
Korean Circ J 2011;
41:304-7. [PMID:
21779282 PMCID:
PMC3132691 DOI:
10.4070/kcj.2011.41.6.304]
[Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2010] [Revised: 09/03/2010] [Accepted: 10/14/2010] [Indexed: 12/17/2022] Open
Abstract
Background and Objectives
Discrepancy between angiographic percent (%) diameter stenosis and fractional flow reserve (FFR) exists in non-left main bifurcation lesions. The aim of this study was to compare angiographic stenosis severity and FFR in jailed ostial left circumflex artery (LCX) lesions after left main (LM)-to-left anterior descending artery (LAD) crossover stenting.
Subjects and Methods
Twenty-nine (n=29) patients with distal LM or ostial LAD lesions treated by LM-to-LAD crossover stenting were consecutively enrolled. After successful stenting, FFR was measured at the jailed LCX. Additional intervention was performed in lesions with FFR <0.8.
Results
The mean reference diameter of LCX was 3.1±0.4 mm, and percent diameter stenosis after crossover stenting was 56±21%. Angiographically significant stenosis (>50%) at the ostial LCX occurred in 59% (17/29) of cases. Among them, only five (29%) lesions had functional significance, and underwent additional procedure. During follow-up, three patients in the deferral group and two patients in the additional intervention group had target lesion revascularization.
Conclusion
There was a discrepancy between angiographic percent diameter stenosis and FFR in jailed LCX lesions after LM crossover stenting.
Collapse