Document Detail

The association between plaque characterization by CT angiography and post-procedural myocardial infarction in patients with elective stent implantation.
MedLine Citation:
PMID:  20129526     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: This study sought to evaluate the association between volumetric characterization of target lesions by multidetector computed tomography (MDCT) angiography and the risk of post-procedural myocardial injury after elective stent implantation. BACKGROUND: Previous reports have shown that plaque characterization of the target lesion may provide useful information for stratifying the risk of coronary stenting. METHODS: A total of 189 consecutive patients were enrolled; they underwent elective stent implantation after volumetric plaque analysis with 64-slice MDCT. Each plaque component and lumen (filled with dye) was defined as follows: 1) low-attenuation plaque (LAP) (<50 HU); 2) moderate-attenuation plaque (MAP) (50 to 150 HU); 3) lumen (151 to 500 HU); and 4) high-attenuation plaque (HAP) (>500 HU). The volume of each plaque component in the target lesion was calculated using Color Code Plaque. Post-procedural creatine kinase-MB isoform and troponin-T (TnT) at 18 h after percutaneous coronary intervention were also evaluated. RESULTS: The volumes of LAP (87.9+/-94.8 mm3 vs. 47.4+/-43.7 mm3, p<0.01) and MAP (111.6+/-77.5 mm3 vs. 89.8+/-67.1 mm3, p<0.05) were larger in patients with post-procedural myocardial injury (defined as positive TnT) than in those with negative TnT. The volumes of LAP and MAP and fraction of LAP in total plaque (LAP volume/total plaque volume) correlated with biomarkers; the MAP fraction was inversely correlated with biomarkers. The volume of LAP was an independent predictor of positive TnT after adjusting for patient background, conventional IVUS parameters, and procedural factors. CONCLUSIONS: Post-procedural myocardial injury was associated with the volume and fraction of LAP as detected by MDCT. The volume of LAP was an independent predictor of positive TnT. Plaque analysis by MDCT would be a useful method for predicting post-procedural myocardial injury after percutaneous coronary intervention.
Tadayuki Uetani; Tetsuya Amano; Ayako Kunimura; Soichiro Kumagai; Hirohiko Ando; Kiminobu Yokoi; Tomohiro Yoshida; Bunichi Kato; Masataka Kato; Nobuyuki Marui; Michio Nanki; Tatsuaki Matsubara; Hideki Ishii; Hideo Izawa; Toyoaki Murohara
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Publication Detail:
Type:  Comment; Journal Article     Date:  2010-01-12
Journal Detail:
Title:  JACC. Cardiovascular imaging     Volume:  3     ISSN:  1876-7591     ISO Abbreviation:  JACC Cardiovasc Imaging     Publication Date:  2010 Jan 
Date Detail:
Created Date:  2010-02-04     Completed Date:  2010-04-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101467978     Medline TA:  JACC Cardiovasc Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  19-28     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.
Department of Cardiology, Chubu Rosai Hospital, and Department of Internal Medicine, Aichi-Gakuin School of Dentistry, Nagoya, Japan.
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MeSH Terms
Angioplasty, Transluminal, Percutaneous Coronary / adverse effects*,  instrumentation*
Biological Markers / blood
Chi-Square Distribution
Coronary Angiography / methods*
Coronary Stenosis / radiography*,  therapy*
Creatine Kinase, MB Form / blood
Linear Models
Logistic Models
Middle Aged
Myocardial Infarction / blood,  etiology*,  radiography
Predictive Value of Tests
Prospective Studies
Risk Assessment
Risk Factors
Severity of Illness Index
Time Factors
Tomography, X-Ray Computed*
Treatment Outcome
Troponin T / blood
Reg. No./Substance:
0/Biological Markers; 0/Troponin T; EC Kinase, MB Form
Comment On:
JACC Cardiovasc Imaging. 2010 Jan;3(1):29-31   [PMID:  20129527 ]

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