Pre-Angioplasty Instantaneous Wave-Free Ratio Pullback Provides Virtual Intervention and Predicts Hemodynamic Outcome for Serial Lesions and Diffuse Coronary Artery Disease

被引：104

作者：

Nijjer, Sukhjinder S. ^{[1
]}

Sen, Sayan ^{[1
]}

Petraco, Ricardo ^{[1
]}

Escaned, Javier ^{[2
]}

Echavarria-Pinto, Mauro ^{[2
]}

Broyd, Christopher ^{[1
]}

Al-Lamee, Rasha ^{[1
]}

Foin, Nicolas ^{[1
]}

Foale, Rodney A. ^{[1
]}

Malik, Iqbal S. ^{[1
]}

Mikhail, Ghada W. ^{[1
]}

Sethi, Amarjit S. ^{[1
]}

Al-Bustami, Mahmud ^{[1
]}

Kaprielian, Raffi R. ^{[1
]}

Khan, Masood A. ^{[1
]}

Baker, Christopher S. ^{[1
]}

Bellamy, Michael F. ^{[1
]}

Hughes, Alun D. ^{[3
]}

Mayet, Jamil ^{[1
]}

Francis, Darrel P. ^{[1
]}

Di Mario, Carlo ^{[4
]}

Davies, Justin E. R. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, London, England

[2] Hosp Clin San Carlos, Cardiovasc Inst, Madrid, Spain

[3] UCL, Inst Cardiovasc Sci, London, England

[4] Univ London Imperial Coll Sci Technol & Med, Royal Brompton Hosp, NIHR, Cardiovasc Biomed Res Unit, London, England

来源：

JACC-CARDIOVASCULAR INTERVENTIONS | 2014年 / 7卷 / 12期

关键词：

coronary physiology; instantaneous wave-free ratio; percutaneous coronary intervention; pressure wire; FRACTIONAL FLOW RESERVE; ADENOSINE INFUSION IMPLICATIONS; MYOCARDIAL BLOOD-FLOW; INTRAVENOUS ADENOSINE; DIAGNOSTIC-ACCURACY; BALLOON ANGIOPLASTY; STENOSIS SEVERITY; PRESSURE; IFR; VALIDATION;

D O I：

10.1016/j.jcin.2014.06.015

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

OBJECTIVES The aim of this study was to perform hemodynamic mapping of the entire vessel using motorized pullback of a pressure guidewire with continuous instantaneous wave-free ratio (iFR) measurement. BACKGROUND Serial stenoses or diffuse vessel narrowing hamper pressure wire-guided management of coronary stenoses. Characterization of functional relevance of individual stenoses or narrowed segments constitutes an unmet need in ischemia-driven percutaneous revascularization. METHODS The study was performed in 32 coronary arteries with tandem and/or diffusely diseased vessels. An automated iFR physiological map, integrating pullback speed and physiological information, was built using dedicated software to calculate physiological stenosis severity, length, and intensity (DiFR/mm). This map was used to predict the best-case post-percutaneous coronary intervention (PCI) iFR (iFR(exp)) according to the stented location, and this was compared with the observed iFR post-PCI (iFR(obs)). RESULTS After successful PCI, the mean difference between iFRexp and iFRobs was small (mean difference: 0.016 +/- 0.004) with a strong relationship between Delta iFR(exp) and Delta iFR(obs) (r = 0.97, p < 0.001). By identifying differing iFR intensities, it was possible to identify functional stenosis length and quantify the contribution of each individual stenosis or narrowed segment to overall vessel stenotic burden. Physiological lesion length was shorter than anatomic length (12.6 +/- 1.5 vs. 23.3 +/- 1.3, p < 0.001), and targeting regions with the highest iFR intensity predicted significant improvement post-PCI (r = 0.86, p < 0.001). CONCLUSIONS iFR measurements during continuous resting pressure wire pullback provide a physiological map of the entire coronary vessel. Before a PCI, the iFR pullback can predict the hemodynamic consequences of stenting specific stenoses and thereby may facilitate the intervention and stenting strategy. (C) 2014 by the American College of Cardiology Foundation.

引用

页码：1386 / 1396

页数：11

共 21 条

[21] Myocardial perfusion imaging by single-photon emission tomography (MPI SPECT) versus Instantaneous wave-free ratio (IFR) for assessment of functional significance of intermediate coronary artery lesions
Osama Ahmed Amin
Yasser Ahmed Abdel Hady
Mohammad Ahmad Nour El-Din Esmail
The Egyptian Heart Journal, 71

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