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Comparison of Coronary Intimal Plaques by Optical Coherence Tomography in Arteries With Versus Without Internal Running Vasa Vasorum Comparison of plaque characteristics in narrowings with ST-elevation myocardial infarction (STEMI), non-STEMI/unstable angina pectoris and stable coronary artery disease (from the ADAPT-DES IVUS Substudy) Novel percutaneous interventional therapies in heart failure with preserved ejection fraction: an integrative review Atrial Fibrillation and the Prognostic Performance of Biomarkers in Heart Failure Heart failure with preserved ejection fraction: from mechanisms to therapies Colchicine Reduces Cardiovascular Events in Chronic Coronary Disease Comprehensive comparative effectiveness and safety of first-line antihypertensive drug classes: a systematic, multinational, large-scale analysis Machine Learning Using CT-FFR Predicts Proximal Atherosclerotic Plaque Formation Associated With LAD Myocardial Bridging

Original Research2017 May 15;119(10):1512-1517.

JOURNAL:Am J Cardiol. Article Link

Comparison of Coronary Intimal Plaques by Optical Coherence Tomography in Arteries With Versus Without Internal Running Vasa Vasorum

Amano H, Koizumi M, Okubo R et al. Keywords: OCT; internal running vasa vasorum; plaque vulnerability; blood flow

ABSTRACT


It has been reported that the internal running vasa vasorum (VV) was associated with plaque vulnerability, and microchannels in optical coherence tomography (OCT) are consistent pathologically with VV. We investigated plaque vulnerability and incidence of slow flow during percutaneous coronary intervention of the internal longitudinal running VV. Subjects were 71 lesions that underwent OCT before percutaneous coronary intervention. Internal running VV was defined as intraplaque neovessels running from the adventitia to plaque. Lesions with internal running VV were found in 47% (33 of 71). Compared with lesions without internal running VV, lesions with internal running VV showed significantly higher incidence of intimal laceration (64% [21 of 33] vs 16% [6 of 38], p <0.001), lipid-rich plaque (79% [26 of 33] vs 26% [10 of 38], p <0.001), plaque rupture (52% [17 of 33] vs 13% [5 of 38], p <0.001), thin-cap fibroatheroma (58% [19 of 33] vs 11% [4 of 38], p <0.001), macrophage accumulation (61% [20 of 33] vs 26% [10 of 38], p = 0.004), intraluminal thrombus (36% [12 of 33] vs 3% [1 of 38], p <0.001), and slow flow after stent implantation (42% [14 of 33] vs 13% [5 of 38], p = 0.007). The multivariable analysis showed that internal running VV was an independent predictor of slow flow after stent implantation (odds ratio 4.23, 95% confidence interval 1.05 to 17.01, p = 0.042). In conclusion, compared with those without, plaques with internal running VV in OCT had high plaque vulnerability with more intimal laceration, lipid-rich plaque, plaque rupture, thin-cap fibroatheroma, macrophage accumulation, and intraluminal thrombus, and they had high incidence of slow flow after stent implantation.