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Updated: Mar 1, 2026

Non-invasive Assessment of Microvascular and Endothelial Function
Published on: January 29, 2013
Evaluation of Microvascular Disease and Clinical Outcomes
Christopher J Broyd1, Mauro Echavarria-Pinto1, Enrico Cerrato1
1Cardiovascular Institute, Hospital Clínico San Carlos, Madrid 28040, Spain.
Insights
Assessing coronary microcirculatory dysfunction, crucial for cardiac health prognosis, has been challenging. This review explores methods to evaluate this dysfunction and its clinical impact.
Area of Science:
- Cardiology
- Physiology
- Medical Diagnostics
Background:
- Coronary microcirculatory dysfunction is prevalent in various heart conditions and impacts patient outcomes.
- Clinical assessment of coronary microcirculation has been limited due to inadequate diagnostic tools.
- Dysfunction can stem from structural changes, dysregulation, hypersensitivity, or external compression.
Purpose of the Study:
- To review current methods for assessing coronary microcirculation.
- To correlate assessment tools with the underlying causes of microcirculatory dysfunction.
- To discuss the prognostic information provided by these assessment tools.
Main Methods:
- Review of existing literature on coronary microcirculation assessment techniques.
- Categorization of methods based on the suspected etiology of dysfunction.
- Analysis of prognostic data associated with different assessment modalities.
Main Results:
- Several tools exist to interrogate coronary microcirculation, but their clinical application is inconsistent.
- The choice of assessment method should be guided by the suspected cause of microcirculatory impairment.
- Different methods offer varying degrees of prognostic insight.
Conclusions:
- Improved methods for assessing coronary microcirculation are needed for routine clinical practice.
- Tailoring assessment strategies to specific causes of dysfunction can enhance diagnostic accuracy.
- Understanding the prognostic implications of microcirculatory assessment is vital for patient management.
Abstract:
Although coronary microcirculatory dysfunction occurs in numerous cardiac conditions and influences prognosis, it has been largely ignored in clinical practice due to the lack of adequate methods for its assessment. Microcirculatory dysfuntion may result from a variety of causes, including structural remodelling (arterioles or capillaries), dysregulation (paradoxical arteriolar vasoconstriction), hypersensitivity to vasoactive factors or adrenergic drive, and extravascular compression of collapsable elements. Thus, the selection of a method to interrogate coronary microcirculation should be based on the suspected cause of dysfunction. This article reviews such assessment tools and their prognostic information.
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