Residual pressure gradient across the implanted stent: An important factor of post-PCI physiological results

Yoshiaki Kawase, Masanori Kawasaki, Jun Kikuchi, Tetsuo Hirata, Syuuichi Okamoto, Toru Tanigaki, Hiroyuki Omori, Hideaki Ota, Munenori Okubo, Hiroki Kamiya, Akihiro Hirakawa, Hitoshi Matsuo

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Background: Instantaneous wave-free ratio (iFR) has the potential to improve the accuracy of the prediction of the physiological result of percutaneous coronary intervention (PCI). The aim of this study was to evaluate the accuracy of iFR to predict the final physiological results following PCI, and investigate the factors for failed prediction. Methods: In 73 lesions, iFR pullback recordings were measured and comparisons were made between the predicted improvement following PCI and the observed result. Results: iFR predicted–observed difference was 0.036 ± 0.037. Multivariate analysis showed residual iFR pressure gradient across the implanted stent (odds ratio, 2.329; 95% confidence interval, 1.408–3.853; p = 0.0010) as an independent risk factor for error in iFR prediction. Conclusions: iFR predicted–observed difference was 0.036 ± 0.037. Residual in-stent iFR pressure gradient following PCI is the only independent risk factor for failed prediction.

Original languageEnglish
Pages (from-to)458-463
Number of pages6
JournalJournal of cardiology
Volume71
Issue number5
DOIs
Publication statusPublished - 05-2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

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