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Updated: Aug 9, 2026

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Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
Published on: October 22, 2014
[Blood viscosity in ischemic heart disease]
Summary
Blood viscosity (BV) is elevated in patients with ischemic heart disease (IHD), including unstable angina (UA) and acute myocardial infarction (MI). This elevation occurs independently of hematocrit, suggesting other factors contribute to increased BV in IHD patients.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Biophysics
Context:
- Ischemic heart disease (IHD) is a significant health concern.
- Blood viscosity (BV) is a critical hemorheological parameter.
- Understanding factors influencing BV in IHD is crucial for patient management.
Purpose:
- To measure and compare venous and arterial blood viscosity in patients with IHD.
- To correlate blood viscosity with coronary risk factors and clinical parameters.
- To investigate the independence of elevated BV from hematocrit in IHD.
Summary:
- Venous and arterial blood viscosity were measured in 25 IHD patients (10 UA, 15 MI) and 100 controls.
- Elevated BV was observed in both UA (4.03 cP) and MI (3.65 cP) groups compared to controls (2.70 cP).
- BV remained elevated independently of hematocrit, suggesting roles for plasmatic viscosity and platelet aggregation.
Impact:
- Highlights elevated blood viscosity as a potential biomarker in IHD.
- Suggests further investigation into non-hematocrit related factors affecting BV in IHD.
- Provides insights into hemorheological alterations in cardiovascular disease.
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