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Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
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Multiple complex coronary atherosclerosis in diabetic patients with acute myocardial infarction: a three-vessel

Masashi Fukunaga1, Kenichi Fujii, Tsuyoshi Nakata

  • 1Cardiovascular Division, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, Japan.

Eurointervention : Journal of Europcr in Collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology
|December 21, 2012
PubMed

Insights

Diabetic patients with acute myocardial infarction (AMI) have similar vulnerable plaques in culprit lesions but more non-culprit lesions. Optical coherence tomography (OCT) revealed differences in thin-cap fibroatheroma (TCFA) distribution between diabetic and non-diabetic individuals.

Area of Science:

  • Cardiovascular Medicine
  • Interventional Cardiology
  • Diabetology

Background:

  • Acute myocardial infarction (AMI) is primarily caused by thin-cap fibroatheroma (TCFA) disruption and thrombosis.
  • Diabetic patients face increased cardiovascular event mortality, suggesting potential differences in vulnerable plaque characteristics.
  • Optical coherence tomography (OCT) is a key imaging modality for assessing coronary plaque morphology.

Purpose of the Study:

  • To investigate the incidence and characteristics of vulnerable plaques in diabetic versus non-diabetic patients with AMI.
  • To compare the prevalence of thin-cap fibroatheromas (TCFAs) and plaque ruptures using OCT in these patient groups.

Main Methods:

  • Optical coherence tomography (OCT) imaging was performed on all three major coronary arteries of 70 AMI patients (48 non-diabetic, 22 diabetic).
  • Thin-cap fibroatheroma (TCFA) was defined by lipid-rich plaque and a fibrotic cap thickness <65 µm.
  • Plaque rupture was identified by a cavity in contact with the lumen and a residual fibrous cap.

Main Results:

  • A total of 68 plaque ruptures and 162 TCFAs were identified across all patients.
  • The incidences of plaque rupture and TCFA at culprit lesions were comparable between diabetic and non-diabetic groups.
  • Thin-cap fibroatheromas (TCFAs) were significantly more frequent in non-culprit lesions of diabetic patients compared to non-diabetic patients.

Conclusions:

  • Vulnerable plaque prevalence in culprit lesions does not differ significantly between diabetic and non-diabetic AMI patients.
  • Diabetic patients with AMI exhibit a higher frequency of vulnerable plaques in non-culprit coronary artery lesions.
Abstract

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