TY  - BOOK
AU  - Ben-Dor, Itsik
AU  - Pichard, Augusto D
AU  - Waksman, Ron
TI  - Optimal intravascular ultrasound criteria for defining the functional significance of intermediate coronary stenosis: an international multicenter study
SN  - 0008-6312
PY  - 2014///
KW  - *Coronary Stenosis/us [Ultrasonography]
KW  - *Registries
KW  - *Ultrasonography, Interventional/st [Standards]
KW  - Aged
KW  - Asian Continental Ancestry Group
KW  - Coronary Stenosis/co [Complications]
KW  - Coronary Vessels/us [Ultrasonography]
KW  - European Continental Ancestry Group
KW  - Female
KW  - Fractional Flow Reserve, Myocardial
KW  - Humans
KW  - Male
KW  - Middle Aged
KW  - Myocardial Ischemia/et [Etiology]
KW  - MedStar Heart & Vascular Institute
KW  - Journal Article
KW  - Multicenter Study
KW  - Research Support, Non-U.S. Gov't
N1  - Available online through MWHC library: 2007 - present (after 1 year), Available in print through MWHC library: 1999 - 2006
N2  - CONCLUSION: In this pooled analysis, an IVUS MLA of 2.75 mm(2) was the BCV to define the functional significance of intermediate coronary stenosis. However, when IVUS MLA is used to determine the functional significance, both the lesion and patient characteristics should be considered; METHODS: Eleven centers worldwide were invited to provide their clinical, IVUS and fractional flow reserve (FFR) data. A total of 881 lesions were enrolled; OBJECTIVE: We aimed to assess the ideal cut-off value of minimal lumen area (MLA) by intravascular ultrasound (IVUS) and its diagnostic performance to predict ischemia, using a large-scale, pooled analysis; RESULTS: Angiographic % diameter stenosis (r = -0.373, p < 0.0001) and IVUS MLA (r = 0.289, p < 0.0001) correlated with FFR. Best cut-off value (BCV) of IVUS MLA to define the functional significance (FFR <0.8) was 2.75 mm(2) (AUC 0.646, 95% CI 0.609-0.684). When the diagnostic performance of IVUS MLA was tested according to the lesion location, BCV could be found only in lesions in the proximal artery and the mid-left anterior descending artery. Interestingly, Asians (n = 623) and Westerners (n = 258) showed different demographic and lesion characteristics as well as different BCVs to define ischemia. The BCV for the proximal/mid-left anterior descending artery lesions was 2.75 mm(2) (AUC 0.688, 95% CI 0.635-0.742) in Asians and 3.0 mm(2) (AUC 0.695, 95% CI 0.605-0.786) in Westerners
UR  - http://dx.doi.org/10.1159/000356480
ER  -