Clinical implications of coronary pressure measurement after stent implantation
Tóm tắt
This study investigated the effect of fractional flow reserve (FFR) after stent implantation on clinical outcomes. Pressurewire measurements and follow-up data were obtained after stent implantation. Regarding the end point, target lesion revascularization (TLR) occurred in 11 patients (15.9 %). Patients with TLR had higher frequencies of multiple stenting (54.5 vs. 19.0 %, p = 0.01), lower post-interventional FFRs (0.84 vs. 0.88, p = 0.01), and longer stent lengths (42.20 vs. 27.69 mm, p = 0.01) than patients without TLR. The post-interventional FFR cutoff for TLR was 0.79, although this value had a weak discriminatory ability. However, multivariate analysis did not show any significant independent predictors of TLR (odds ratio 6.33; confidence interval 0.75–53.4, p = 0.09). Post-interventional FFR values were not significantly associated with TLR when a sub-analysis was performed in patients who underwent only drug-eluting stent (DES) implantation. It was difficult to achieve post-interventional FFRs of 0.9 or greater. DES implantation eliminated the effect of post-interventional FFR on TLR. Post-interventional FFR was not able to predict TLR in the present study.
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Tài liệu tham khảo
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