Document Detail


Comparison of coronary calcium in stable angina pectoris and in first acute myocardial infarction utilizing double helical computerized tomography.
MedLine Citation:
PMID:  9468066     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Although coronary calcium is invariably associated with atherosclerosis, its role in the pathogenesis of acute and chronic coronary syndromes remains unclear. Utilizing double helical computerized tomography we evaluated the coronary calcium patterns in 149 patients: 47 with chronic stable angina (SAP) compared with 102 patients surviving a first acute myocardial infarction (AMI). Prevalence of coronary calcium was 81% among the AMI patients and 100% in the stable angina patients. The 547 calcific lesions identified in the AMI patients and the 1,242 lesions in the stable angina patients were categorized into 3 groups according to their extent: mild, intermediate, and extensive. The age-adjusted percentages of the highest level of calcification among AMI versus stable angina patients were: mild 18% vs 3%, intermediate 49% vs 18%, and extensive lesions 33% vs 79%, respectively (p < 0.01). In the AMI group, 73 culprit arteries were identified: 16 (22%) had no calcium detected, whereas 30 (41%) had mild lesions, 20 (27%) had intermediate forms, and only 7 (10%) had extensive lesions. The age-adjusted mean of the natural logarithm transformation of total calcium scores +1 was significantly lower in patients with AMI than in those with SAP (4.1 [95% confidence interval 3.7 to 4.4) vs 5.3 [95% confidence interval 4.8 to 5.8]). Thus, double helical computerized tomography demonstrates that extensive calcium characterizes the coronary arteries of patients with chronic stable angina, whereas a first AMI most often occurs in mildly calcified or noncalcified culprit arteries.
Authors:
J Shemesh; C I Stroh; A Tenenbaum; H Hod; V Boyko; E Z Fisman; M Motro
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The American journal of cardiology     Volume:  81     ISSN:  0002-9149     ISO Abbreviation:  Am. J. Cardiol.     Publication Date:  1998 Feb 
Date Detail:
Created Date:  1998-02-26     Completed Date:  1998-02-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0207277     Medline TA:  Am J Cardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  271-5     Citation Subset:  AIM; IM    
Affiliation:
Cardiac Rehabilitation Institute, the Chaim Sheba Medical Center, affiliated with the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Hashomer, Israel.
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MeSH Terms
Descriptor/Qualifier:
Aged
Angina Pectoris / pathology*,  radiography
Calcinosis / radiography*
Calcium / analysis*
Coronary Angiography
Coronary Vessels / chemistry*,  pathology
Female
Humans
Male
Middle Aged
Myocardial Infarction / pathology*,  radiography
Tomography, X-Ray Computed / methods*
Chemical
Reg. No./Substance:
7440-70-2/Calcium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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