Abstract:
OBJECTIVES:This study was designed to evaluate whether calcium deposition in the coronary arteries is related to atherosclerotic plaque burden and narrowing of the arterial lumen. BACKGROUND:Many studies have recently documented the feasibility of electron beam computed tomography to detect and quantify coronary artery calcification in patients. Although these studies suggest a general relation between calcification and severity of coronary artery disease, the value of coronary calcium in defining atherosclerotic plaque and coronary lumen narrowing is unclear. Previous pathologic comparisons have failed to detail such a relation in identical histologic sections. This finding may be due to atherosclerotic remodeling. METHODS:A total of 37 nondecalcified coronary arteries were processed, sectioned at 3-mm intervals (723 sections) and evaluated by computer planimetry and densitometry. RESULTS:A significant relation between calcium area and plaque area was found on a per-heart basis (n = 13, r = 0.87, p < 0.0001), per-artery basis (left anterior descending coronary artery [LAD]: n = 13, r = 0.89, p < 0.0001; left circumflex coronary artery [LCx]: n = 11, r = 0.7, p < 0.001; right coronary artery [RCA]: n = 13, r = 0.89, p < 0.0001) and per-segment basis (n = 723, r = 0.52, p < 0.0001). In contrast, a poor relation existed between residual histologic lumen area and calcium area for individual hearts (r = 0.48, p = NS), individual coronary arteries (LAD: r = 0.59, p = NS; LCx: r = 0.10, p = NS; RCA: r = 0.59, p = NS) and coronary segments (r = 0.07, p = NS). Longitudinal changes in external elastic lamina areas were highly correlated with changes in plaque area values (r = 0.60, p < 0.0001), whereas lumen area did not correlate with plaque size change (r = 0.01, p = NS). CONCLUSIONS:Coronary calcium quantification is an excellent method of assessing atherosclerotic plaque presence at individual artery sites. Moreover, the amount of calcium correlates with the overall magnitude of atherosclerotic plaque burden. This study suggests that the remodeling phenomenon is the likely explanation for the lack of a good predictive value between lumen narrowing and quantification of mural calcification.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Sangiorgi G,Rumberger JA,Severson A,Edwards WD,Gregoire J,Fitzpatrick LA,Schwartz RSdoi
10.1016/s0735-1097(97)00443-9subject
Has Abstractpub_date
1998-01-01 00:00:00pages
126-33issue
1eissn
0735-1097issn
1558-3597pii
S0735-1097(97)00443-9journal_volume
31pub_type
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journal_title:Journal of the American College of Cardiology
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abstract:OBJECTIVES:The aim of this study was to investigate whether multiple biomarkers contribute to improved coronary heart disease (CHD) risk prediction in post-menopausal women compared with assessment using traditional risk factors (TRFs) only. BACKGROUND:The utility of newer biomarkers remains uncertain when added to pr...
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doi:10.1016/j.jacc.2007.04.059
更新日期:2007-08-14 00:00:00
abstract::To clarify the role of serotonin in eliciting myocardial ischemia, the effects of serotonin on coronary vasculature and cardiac performance were examined in anesthetized open chest dogs. Without coronary stenosis, intracoronary infusion of serotonin (0.001 to 1.0 micrograms/kg per min) for 40 s caused dose-dependent i...
journal_title:Journal of the American College of Cardiology
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doi:10.1016/0735-1097(89)90201-5
更新日期:1989-08-01 00:00:00
abstract:OBJECTIVES:Our goals were to examine late clinical outcome in a cohort of patients who electively received Palmaz-Schatz intracoronary stents, to identify specific predictors of outcome and to determine the time course of the development of ischemic cardiac events after stenting. BACKGROUND:Short-term results of Palma...
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更新日期:2020-05-05 00:00:00
abstract::To identify predictors of the success or failure of medical therapy in chronic recurrent sustained ventricular tachycardia, univariate and multivariate statistical techniques were used to retrospectively analyze data in 84 patients with this arrhythmia. By univariate analysis, four factors were associated with success...
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doi:10.1016/s0735-1097(83)80066-7
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abstract:OBJECTIVES:We sought to determine whether the introduction of these agents had altered the outcome of dilated cardiomyopathy (DC) in childhood. BACKGROUND:Pediatric DC has a poor prognosis. Angiotensin-converting enzyme inhibitors (ACEIs) and beta-adrenergic receptor blockers (BBs) improve survival in adults with DC, ...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2009.11.059
更新日期:2010-03-30 00:00:00
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更新日期:2006-11-07 00:00:00
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更新日期:2005-04-05 00:00:00
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doi:10.1016/j.jacc.2005.08.060
更新日期:2006-01-17 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/0735-1097(90)90621-u
更新日期:1990-03-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1992-11-15 00:00:00
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pub_type: 杂志文章
doi:10.1016/0735-1097(89)90021-1
更新日期:1989-12-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(96)00573-6
更新日期:1997-03-15 00:00:00
abstract:BACKGROUND:Microvascular dysfunction plays an important role in the pathogenesis of heart failure with preserved ejection fraction (HFpEF). However, no mechanistic link between systemic microvasculature and congestion, a central feature of the syndrome, has yet been investigated. OBJECTIVES:This study aimed to investi...
journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/j.jacc.2020.10.022
更新日期:2020-12-15 00:00:00
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pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1016/j.jacc.2007.01.099
更新日期:2007-07-31 00:00:00
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更新日期:2019-11-26 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究
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更新日期:2003-02-19 00:00:00
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journal_title:Journal of the American College of Cardiology
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doi:10.1016/s0735-1097(84)80155-2
更新日期:1984-12-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jacc.2018.07.075
更新日期:2018-10-16 00:00:00
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journal_title:Journal of the American College of Cardiology
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doi:10.1016/s0735-1097(00)01182-7
更新日期:2001-03-01 00:00:00
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journal_title:Journal of the American College of Cardiology
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更新日期:2003-08-20 00:00:00
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更新日期:1994-12-01 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(02)01834-x
更新日期:2002-05-15 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.jacc.2018.11.051
更新日期:2019-03-05 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章
doi:10.1016/s0735-1097(96)00481-0
更新日期:1997-02-01 00:00:00