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Updated: Sep 20, 2026

Assessing Endothelial Vasodilator Function with the Endo-PAT 2000
Published on: October 15, 2010
[Relationship between changes of endothelial vasodilator function, vascular and cardiac structure and derangements of
Insights
Blood pressure rhythm impacts heart and vessel health. Normalizing 24-hour blood pressure (BP) rhythm improves hypertension treatment outcomes and reverses structural changes.
Area of Science:
- Cardiovascular Medicine
- Hypertension Research
- Vascular Biology
Context:
- Essential hypertension affects cardiovascular structure and function.
- 24-hour blood pressure (BP) rhythm is a key indicator of cardiovascular health.
- Abnormal BP rhythm (non-dipping) is linked to adverse outcomes.
Purpose:
- To investigate the relationship between 24-hour BP rhythm and cardiac/vascular structure and function.
- To evaluate the impact of antihypertensive therapy on BP rhythm and cardiovascular parameters.
Summary:
- Patients with essential hypertension were classified as dippers or non-dippers based on 24-hour BP monitoring.
- Non-dippers exhibited impaired endothelium-dependent vasodilation, increased left ventricular mass, and thicker carotid artery walls compared to dippers.
- A linear correlation was observed between BP rhythm alterations and cardiovascular structural/functional changes.
Impact:
- Findings highlight the significance of BP rhythm in hypertension management.
- Normalization of 24-hour BP rhythm during therapy correlates with improved regression of cardiovascular abnormalities.
- This study provides insights into personalized hypertension treatment strategies focusing on BP rhythm.
Aim:
To assess relationship between 24-hour blood pressure (BP) rhythm and structural and functional state of the heart and blood vessels.
Material And Methods:
Echocardiography, sonography of carotid artery intima-media, and assessment of endothelium dependent (flow mediated) and endothelium independent (nitroglycerine) brachial artery vasodilatation were used in the study of 83 patients with stage I-II essential hypertension (mean age 49.2+/-6.2 years). Seventy four patients received indapamide and enalapril for 24 weeks.
Results:
According to results of 24-hour BP monitoring the patients were divided into 2 groups with normal (dippers) and abnormal (non-dippers) BP rhythm. Non-dippers compared with dippers had more pronounced lowering of endothelium-dependent autoregulation of arterial tone, bigger left ventricular mass thicker carotid artery wall. Linear correlation was found between changes of 24-hour BP rhythm and structural and functional parameters of the heart and vessels. More pronounced regression of their derangements occurred during antihypertensive therapy in those patients in whom normalization of 24-hour rhythm was achieved.
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