Circulation. 2007;115:1823
doi: 10.1161/CIRCULATIONAHA.107.182499
(Circulation. 2007;115:1823.)
© 2007 American Heart Association, Inc.
Issue Highlights
An extract of the first 250 words of the full text is provided, because this article has no abstract.
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COMPARISON OF INTRAVASCULAR ULTRASOUND AND QUANTITATIVE CORONARY ANGIOGRAPHY FOR THE ASSESSMENT OF CORONARY ARTERY DISEASE PROGRESSION, by Berry et al.
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The assessment of coronary artery disease severity, progression,
and regression has historically been performed using quantitative
coronary angiography (QCA); it is well known, however, that
the degree of atherosclerotic plaque is underestimated by QCA.
In contrast, intravascular ultrasound has been shown to define
the plaque and its composition more accurately. It is not clear
how well serial intravascular ultrasound measurements compare
to serial QCA measurements. The study by Berry et al in this
issue of
Circulation compared intravascular ultrasound and QCA
at baseline and after 24 months in 525 and 432 patients, respectively.
A significant correlation was seen between baseline measures
of lumen dimensions using the 2 techniques, but weak correlations
between plaque volume and luminal narrowing were observed over
time. Disease progression by QCA was associated with a significant
increase in plaque volume on intravascular ultrasound, however.
While these techniques correlate with each other, the relationship
is not strong enough to consider them as equivalent. See p 1851
(editorial p 1824).
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A PROSPECTIVE STUDY OF TRANS FATTY ACIDS IN ERYTHROCYTES AND RISK OF CORONARY HEART DISEASE, by Sun et al.
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Studies have suggested that the type of fat consumed can contribute
to cardiovascular disease; specifically, intake of
trans fats
leads to increased vascular risk. Is it possible to measure
this risk from a blood-derived marker? In the current issue
of
Circulation, Sun and colleagues measured
trans fatty acids
from erythrocytes in selected participants from the Womens
Health Study. They found that higher total
trans fatty acid
content in erythrocytes was associated with an elevated risk
of developing coronary heart disease even after adjusting for
covariates. It
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