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January 1, 2012Cardiology ResearchOpen Access

Relationship Between Brachial Artery Flow-Mediated Dilation, Carotid Artery Intima-Media Thickness and Coronary Flow Reserve in Patients With Coronary Artery Disease

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Key result

Coronary flow reserve was significantly lower in patients with coronary artery disease compared to controls (1.75 vs 2.40) and correlated significantly with carotid intima-media thickness (r = -0.403).

Why the study?

Does transthoracic coronary flow reserve correlate with brachial artery flow-mediated dilation and carotid intima-media thickness in patients with coronary artery disease?

Population

95 subjects, comprising 50 asymptomatic patients with coronary artery disease and 45 control subjects.

Comparison

Measurement of coronary flow reserve using… vs Control subjects without coronary artery disease.

Design

Cross-sectional

Authors

Ö Öz

Discussion

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Overview

May support CFR as surrogate for atherosclerosis burden in CAD; leaves open incremental value over IMT in prospective validation.

Study Design

Type

Cross-Sectional (n=95)

Multicenter

No

Structured PICO

Does transthoracic coronary flow reserve correlate with brachial artery flow-mediated dilation and carotid intima-media thickness in patients with coronary artery disease?

P
Population
95 subjects, comprising 50 patients with coronary artery disease and 45 controls, underwent noninvasive assessment of endothelial function and coronary flow reserve.
E
Exposure
Measurement of coronary flow reserve (CFR) using transthoracic second harmonic Doppler echocardiography, alongside brachial artery flow-mediated dilation (FMD) and carotid artery intima-media thickness (IMT).
C
Comparator
Control subjects without coronary artery disease.
O
Outcome
Correlation between coronary flow reserve (CFR), brachial artery flow-mediated dilation (FMD), and carotid artery intima-media thickness (IMT).surrogate

Main Result

Absolute Event Rate: 1.75% vs 2.4%

p-value: p=<0.001

Transthoracic coronary flow reserve correlates with established noninvasive markers of atherosclerosis (FMD and IMT), supporting its potential use as a surrogate for coronary atherosclerosis.

Limitations

  • The assessment of absolute blood velocity can be limited in some patients by the large incident angle between the Doppler beam and blood flow.
  • Discrimination between microvascular and macrovascular disease could not be made by CFR measurement alone.
  • Impossibility of discriminating pathological behaviour of CFR due to microvascular or epicardial stenosis represents a major limitation in the final diagnosis.

Cite This Study

 Öz (2012) conducted a cross-sectional in Coronary artery disease (n=95). Coronary artery disease vs. Control subjects without structural heart disease was evaluated on Coronary flow reserve (CFR) (p=<0.001). Coronary flow reserve was significantly lower in patients with coronary artery disease compared to controls (1.75 vs 2.40) and correlated significantly with carotid intima-media thickness (r = -0.403).

synapsesocial.com/papers/6a7dbe261693de70af99aa5ehttps://doi.org/10.4021/cr219w
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