Related Experiment Video
Updated: Apr 15, 2026
Non-invasive Assessment of Microvascular and Endothelial Function
Published on: January 29, 2013
Capillary rarefaction as an index for the microvascular assessment of hypertensive patients
Areti Triantafyllou1, Panagiota Anyfanti, Athina Pyrpasopoulou
13rd Department of Internal Medicine, Papageorgiou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Insights
Capillary rarefaction, a microvascular change, shows promise as an early marker for cardiovascular risk in patients with arterial hypertension. This review explores its potential for identifying high-risk individuals.
Area of Science:
- Cardiovascular Medicine
- Microcirculation Research
- Hypertension Diagnostics
Background:
- Arterial hypertension is a major global cause of cardiovascular disease and target organ damage.
- Microvascular alterations due to sustained high blood pressure are increasingly recognized as early prognostic markers.
- Dermal capillaries offer an accessible in vivo window into human microcirculation.
Purpose of the Study:
- To review the current evidence on capillary rarefaction in hypertension.
- To highlight capillaroscopy as a diagnostic tool for microvascular changes.
- To discuss the prognostic value of capillary rarefaction in hypertensive patients.
Main Methods:
- Literature review of studies investigating capillaroscopy in hypertension.
- Analysis of findings related to microvascular alterations in hypertensive individuals.
- Synthesis of evidence on capillary rarefaction as a prognostic marker.
Main Results:
- Capillary rarefaction is a common finding in the microvasculature of hypertensive patients.
- Capillaroscopy is emerging as a valuable method for assessing microvascular status in hypertension.
- Early identification of capillary rarefaction may aid in risk stratification.
Conclusions:
- Capillary rarefaction is a promising indicator of microvascular damage in hypertension.
- Capillaroscopy offers a non-invasive approach to evaluate hypertensive patients' cardiovascular risk.
- Further research is warranted to fully establish capillary rarefaction's role in managing hypertension.
Abstract:
Arterial hypertension represents a leading cause of cardiovascular mortality and morbidity worldwide through its detrimental effects on target organs. Therefore, the early identification and appropriate management of high-risk patients emerges as extremely important. Given that the microvasculature is subject to a series of morphological and functional changes under the continuous effect of high blood pressure, research over the last years has gradually moved toward the identification of specific microcirculatory alterations that may serve as early prognostic markers of cardiovascular risk. Dermal capillaries represent an "open window" for the in vivo study of human microcirculation that has been long used mainly for the study of rheumatic diseases. However, capillaroscopy has been relatively understudied and only recently applied in the field of hypertension. Capillaroscopy represents a forthcoming promising estimate of the microvascular status in hypertensive patients, with capillary rarefaction representing the most typical finding. The present review aims at summarizing available evidence and the main findings, as well as the premises and promises, of capillary rarefaction as a tool for evaluating patients with hypertension.
More Related Videos
05:17A Reproducible Computerized Method for Quantitation of Capillary Density using Nailfold Capillaroscopy
Published on: October 27, 2015
07:18Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography
Published on: February 18, 2022
Related Concept Videos
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
01:28Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
01:21Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
01:30Hypertension III: Clinical Manifestations and Diagnostic Studies
01:27Assessment of the Cardiovascular System III: Palpation
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above...
01:17Measurement of Blood Pressure