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. 2009 Feb 3;23(7):507–515. doi: 10.1002/clc.4960230709

Intravascular ultrasound predictors of major adverse cardiac events in patients with unstable angina

Mariann Gyongyosi 1,✉, Paul Yang 1, Ali Hassan 1, Hans Domanovits 2, Anton Laggner 2, Franz Weidinger 3, Dietmar Glogar 3
PMCID: PMC6654996  PMID: 10894439

Abstract

Background: Intravascular ultrasound (IVUS) predictors of native culprit lesion morphology for occurrence of major adverse cardiac events (MACE) have not been reported. Moreover, the published data on IVUS predictors of restenosis include patients with stable and unstable angina, although the development and progression of atherosclerosis related to unstable coronary syndrome is different from that of stable angina.

Hypothesis: This study investigated whether IVUS‐de‐rived qualitative and quantitative parameters of native (prean‐gioplastic) plaque morphologic features can predict major adverse cardiac events in patients with unstable angina.

Methods: Clinical (age, gender, coronary risk factors), qualitative and quantitative angiographic (lesion localization, morphology, pre‐ and postangioplastic minimal lumen diameter, reference diameter, and percent diameter stenosis), and IVUS variables (soft/fibrocalcific plaque, calcification, presence of thrombus or plaque disruption, different types of arterial remodeling, pre‐ or postangioplastic minimal lumen, external elastic membrane and plaque cross‐sectional area, and plaque burden of the target lesion and reference segments) were analyzed by regression analyses using the Cox model, assuming proportional hazards.

Results: Of 60 consecutively enrolled patients, 21 suffered from MACE, while 39 remained event‐free during the follow‐up period. Multivariate regression analyses revealed that the presence of adaptive remodeling [p = 0.0177, risk ratio (RR) = 3.108, with 95% confidence interval (CI) = 1.371—8.289] and the preangioplastic lumen cross‐sectional area (p = 0.0130, RR = 0.869, with 95% CI = 0.667—0.913) are independent predictors of MACE during follow‐up, as is postangioplastic angiographic minimal lumen diameter (p = 0.0330, RR = 0.715 with 95% CI = 0.678—0.812).

Conclusions: Adaptive remodeling and preangioplastic lumen cross‐sectional area determined by IVUS and postangioplastic minimal lumen diameter calculated by quantitative angiography are significant independent predictors of time‐dependent MACE in patients with unstable angina.

Keywords: coronary artery disease, unstable coronary syndrome, coronary angiography, intravascular ultrasound, remodeling, angina pectoris

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