1. Predictors for functionally significant in-stent restenosis: an integrated analysis using coronary angiography, IVUS, and myocardial perfusion imaging
- Author
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Soo-Jin, Kang, Young-Rak, Cho, Gyung-Min, Park, Jung-Min, Ahn, Seung-Bong, Han, Jong-Young, Lee, Won-Jang, Kim, Duk-Woo, Park, Seung-Whan, Lee, Young-Hak, Kim, Cheol Whan, Lee, Seong-Wook, Park, Gary S, Mintz, and Seung-Jung, Park
- Subjects
Male ,Tomography, Emission-Computed, Single-Photon ,Chi-Square Distribution ,Hemodynamics ,Myocardial Perfusion Imaging ,Middle Aged ,Coronary Angiography ,Coronary Vessels ,Multimodal Imaging ,Severity of Illness Index ,Coronary Restenosis ,Logistic Models ,Percutaneous Coronary Intervention ,Predictive Value of Tests ,Risk Factors ,Coronary Circulation ,Multivariate Analysis ,Odds Ratio ,Humans ,Female ,Stents ,Ultrasonography, Interventional ,Aged - Abstract
The aim of this study was to assess the clinical and morphological predictors for functionally significant in-stent restenosis (ISR).Although they have been studied de novo in native coronary artery lesions, the relationships between clinical and morphological characteristics and the hemodynamic significance of ISR are not well understood.In 175 patients with ISR of a single coronary artery (angiographic stenosis50%), we compared quantitative coronary angiography and intravascular ultrasound (IVUS) with stress myocardial single-photon emission computed tomography (SPECT). A positive SPECT was a reversible perfusion defect in the territory of the ISR artery.Overall, 103 (59%) patients had a positive SPECT. In-segment IVUS minimal lumen area (MLA) was significantly smaller in lesions with positive SPECT compared with negative SPECT (1.7 ± 0.5 mm(2) vs. 2.4 ± 0.8 mm(2), p0.001). Stent underexpansion (minimal stent area5.0 mm(2)) was more common in the positive SPECT group than in the negative SPECT group (52% vs. 32%, p = 0.010). A positive SPECT was seen in 54% (65 of 121) of focal ISR lesions compared with 70% (38 of 54) of multifocal or diffuse ISR lesions as assessed by IVUS (p = 0.039). Independent determinants for a positive SPECT were diabetes (odds ratio [OR]: 2.41; 95% confidence interval [CI]: 1.02 to 5.68; p = 0.046), in-segment angiographic diameter stenosis (OR: 1.06; 95% CI: 1.03 to 1.09; p0.001), in-segment IVUS-MLA (OR: 0.30; 95% CI: 0.14 to 0.63; p = 0.001), stent underexpansion (minimal stent area5.0 mm(2)), (OR: 2.91; 95% CI: 1.19 to 7.07; p = 0.019), proximal location of the IVUS-MLA (OR: 4.62; 95% CI: 1.75 to 12.18; p = 0.002), and a multifocal or diffuse ISR pattern (OR: 2.50; 95% CI: 0.99 to 6.28; p = 0.050). An in-segment angiographic diameter stenosis ≥69.5% (72% sensitivity, 74% specificity, area under the curve = 0.793) and an IVUS-MLA ≤1.9 mm(2) (67% sensitivity, 75% specificity, area under the curve = 0.756) best predicted a positive SPECT; however, the overall diagnostic accuracies were only 73% and 70%, respectively.In lesions with ISR, neither angiography nor IVUS accurately predicted an abnormal SPECT.
- Published
- 2013