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Pulse Wave Velocities Derived From Cuff Ambulatory Pulse Wave Analysis.

Joseph E Schwartz1,2, Peter U Feig3, Joseph L Izzo4

  • 1From the Department of Psychiatry and Behavioral Health, Renaissance School of Medicine, Stony Brook School of Medicine, NY (J.E.S.).

Hypertension (Dallas, Tex. : 1979)
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Ambulatory oscillometric pulse wave velocity (oPWV) is strongly correlated with age and systolic blood pressure (SBP). These factors explain nearly all oPWV variation, suggesting limited independent predictive value for cardiovascular risk beyond these measures.

Keywords:
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Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering
  • Clinical Diagnostics

Background:

  • Pulse wave velocity (PWV) measures arterial stiffness, a key cardiovascular risk factor.
  • Ambulatory oscillometric PWV (oPWV) is a non-invasive method to assess arterial stiffness.
  • Understanding oPWV determinants is crucial for accurate cardiovascular risk assessment.

Purpose of the Study:

  • To investigate the relationship between ambulatory oPWV and its primary correlates: age and brachial systolic blood pressure (SBP).
  • To determine the extent to which age and SBP explain the variability in oPWV.
  • To compare the relationship of oPWV with carotid-femoral PWV (cfPWV) after accounting for age and SBP.

Main Methods:

  • Analysis of 7284 ambulatory oPWV and SBP readings from 234 participants using the Mobil-O-Graph device.
  • Utilized mixed linear models to estimate oPWV based on age and ambulatory SBP.
  • Measured carotid-femoral PWV (cfPWV) for comparative analysis.

Main Results:

  • Age and SBP together accounted for 99.1% of the total variance in oPWV.
  • Age uniquely explained 75% and SBP uniquely explained 20% of oPWV variation.
  • The correlation between oPWV and cfPWV decreased significantly after controlling for age and SBP, indicating shared variance.

Conclusions:

  • Ambulatory oPWV measured by the Mobil-O-Graph is predominantly determined by age and SBP.
  • The association between oPWV and cfPWV is largely explained by their common dependence on age and SBP.
  • Further research into other hemodynamic variables from oscillometric analysis is warranted.