Why the study?
Circulating Ang-2 levels are elevated in obstructive CAD, but its association with coronary microvascular dysfunction in patients without obstructive CAD was unclear.
Are higher serum Ang-2 levels associated with impaired coronary flow reserve in patients with angina without obstructive CAD?
Population
125 patients with angina in the absence of obstructive CAD
Comparison
Impaired CFR (CFR <2.5) vs preserved CFR (CFR ≥2.5)
Design
Cross-sectional study
Authors
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Supports Ang-2 as a hypothesis-generating CMD biomarker in nonobstructive angina; should not yet change practice.
Are higher serum Ang-2 levels associated with impaired coronary flow reserve in patients with angina without obstructive CAD?
Higher serum Ang-2 levels are independently associated with coronary microvascular dysfunction in patients with angina but no obstructive CAD, suggesting a potential biomarker for this condition.
Chen et al. (2020) studied this question.
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