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Updated: Jun 23, 2026
09:46
Imaging In-Stent Restenosis: An Inexpensive, Reliable, and Rapid Preclinical Model
Published on: September 14, 2009
Lipid-rich plaque and myocardial perfusion after successful stenting in patients with non-ST-segment elevation acute
Atsushi Tanaka1, Toshio Imanishi, Hironori Kitabata
1Department of Cardiovascular Medicine, Wakayama Medical University, 811-1, Kimiidera Wakayama, Japan. m4497147@msic.med.osaka-cu.ac.jp
European Heart Journal
|April 23, 2009
Summary
Optical coherence tomography (OCT) can predict the no-reflow phenomenon in patients with non-ST-segment elevation acute coronary syndrome (NSTEACS). Lipid content in culprit plaques, identified by OCT, is a key factor in microcirculation damage post-percutaneous coronary intervention (PCI).
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Imaging
Background:
- Recent guidelines suggest early invasive strategies for non-ST-segment elevation acute coronary syndrome (NSTEACS).
- However, the benefit of very early intervention remains uncertain, potentially due to the no-reflow phenomenon.
- The no-reflow phenomenon can limit the effectiveness of early reperfusion therapies.
Purpose of the Study:
- To investigate the utility of optical coherence tomography (OCT) in predicting the no-reflow phenomenon in NSTEACS patients.
- To identify plaque characteristics associated with no-reflow after percutaneous coronary intervention (PCI).
Main Methods:
- 83 NSTEACS patients undergoing OCT and primary stenting were analyzed.
- Patients were categorized into no-reflow (n=14) and reflow (n=69) groups based on post-stent TIMI flow.
- Thin-cap fibroatheroma (TCFA) was defined by lipid content >90 degrees and cap thickness <70 microm.
Main Results:
- TCFA was significantly more frequent in the no-reflow group (50% vs. 16%, P=0.005).
- The frequency of no-reflow increased with larger lipid arc size in culprit plaques.
- Lipid arc size was an independent predictor of no-reflow (OR 1.018, P=0.01).
Conclusions:
- OCT is a valuable tool for predicting no-reflow post-PCI in NSTEACS.
- Plaque lipid content is crucial in microcirculatory damage following PCI for NSTEACS.
- OCT aids in risk stratification for PCI in NSTEACS patients.
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