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[Baroreflex sensitivity and vascular involvement in hypertension]

J P Siché1, M Chevallier, F Tremel

  • 1Service de médecine interne et cardiologie, CHU Grenoble.

Archives Des Maladies Du Coeur Et Des Vaisseaux
|August 1, 1995
PubMed
Summary

Baroreflex sensitivity (BRS) is inversely related to arterial stiffness, measured by pulse wave velocity (PWV). This association highlights potential vagal alterations in hypertensive individuals impacting cardiovascular health.

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Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering
  • Hypertension Research

Context:

  • Arterial stiffness, assessed via pulse wave velocity (PWV), is a key indicator of cardiovascular risk.
  • Baroreflex sensitivity (BRS) plays a crucial role in regulating blood pressure.
  • Understanding the interplay between BRS and arterial distensibility is vital for managing hypertension.

Purpose:

  • To investigate the relationship between baroreflex sensitivity (BRS) and arterial distensibility using continuous blood pressure and PWV measurements.
  • To evaluate ambulatory blood pressure and its correlation with BRS and arterial stiffness.
  • To determine if these relationships are independent of age and mean blood pressure.

Summary:

  • This study measured blood pressure and carotid-femoral pulse wave velocity (PWV) in 73 subjects to assess baroreflex sensitivity (BRS).

Related Experiment Videos

  • Significant inverse correlations were found between PWV and BRS (r = -0.59 and -0.41, p < 0.01).
  • The relationship between PWV and BRS was independent of age and blood pressure for the PS+/RR+ sequence, suggesting vagal alterations in hypertensive patients.

    • Impact:

    • The findings suggest that impaired baroreflex sensitivity is linked to increased arterial stiffness, particularly in hypertensive individuals.
    • This research provides insights into the mechanisms underlying cardiovascular dysfunction in hypertension.
    • The results emphasize the importance of assessing both BRS and arterial stiffness for comprehensive cardiovascular risk evaluation.