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Updated: Jul 6, 2026

Measuring the Carotid to Femoral Pulse Wave Velocity (Cf-PWV) to Evaluate Arterial Stiffness
Published on: May 3, 2018
Effects of arterial stiffness, pulse wave velocity, and wave reflections on the central aortic pressure waveform
Wilmer W Nichols1, Scott J Denardo, Ian B Wilkinson
1Division of Cardiovascular Medicine, Department of Medicine, University of Florida College of Medicine, Gainesville, FL 32610, USA. nichoww@medicine.ufl.edu
Insights
Systolic and pulse blood pressure (BP) are key cardiovascular risk predictors in adults over 50. Central BP measurement offers a more accurate cardiovascular risk assessment than brachial BP.
Area of Science:
- Cardiovascular Medicine
- Vascular Physiology
- Hypertension Research
Background:
- Brachial systolic and pulse blood pressures (BPs) are established predictors of cardiovascular events in individuals over 50.
- Increased arterial stiffness, due to arterial wall degeneration and hyperplasia, is the primary driver of elevated systolic and pulse BP.
- Central blood pressure (BP) is increasingly recognized as a superior predictor of cardiovascular risk compared to brachial BP.
Purpose of the Study:
- To highlight the significance of central blood pressure (BP) as a predictor of cardiovascular risk.
- To explain the physiological mechanisms linking arterial stiffness, wave reflection, and blood pressure measurement.
- To underscore the limitations of brachial BP measurements in reflecting the true impact of vasoactive drugs on cardiovascular load.
Main Methods:
- Review of existing literature on arterial stiffness, wave reflection, and BP measurement techniques.
- Analysis of the physiological effects of arterial stiffness on central and brachial BP.
- Evaluation of the impact of vasoactive drugs on arterial hemodynamics and wave reflection patterns.
Main Results:
- Increased arterial stiffness augments central systolic pressure through enhanced wave reflection, increasing left ventricular afterload.
- Vasoactive drugs primarily affect muscular artery stiffness, influencing wave reflection and pulse wave velocity.
- The reduction in systolic BP achieved by vasodilators is underestimated when measured peripherally (brachial artery) compared to centrally.
Conclusions:
- Central BP measurement provides a more accurate assessment of cardiovascular risk and drug efficacy than brachial BP.
- Understanding wave reflection dynamics is crucial for interpreting BP measurements and cardiovascular risk.
- Therapeutic strategies targeting arterial stiffness and wave reflection may offer improved cardiovascular protection.
Abstract:
Brachial systolic and pulse blood pressures (BPs) are better predictors of adverse cardiovascular (CV) events than diastolic BP in individuals older than 50 years. The principal cause of increased systolic and pulse BP is increased stiffness of the elastic arteries as a result of degeneration and hyperplasia of the arterial wall. Recent studies have shown that central BP, the pressure exerted on the heart, brain, and kidneys, is a better predictor of CV risk than brachial BP. As stiffness increases, reflected wave amplitude increases and augments pressure in late systole, producing an increase in left ventricular afterload and myocardial oxygen demand. Vasoactive drugs have little direct effect on large human elastic arteries but can markedly modify wave reflection by altering stiffness of the muscular arteries and changing pulse wave velocity of the reflected wave from the periphery to the heart. Vasodilators decrease the amplitude and increase the travel time (or delay) of the reflected wave, causing a generalized decrease in systolic BP. The decrease in systolic BP brought about by this mechanism is grossly underestimated when systolic BP is measured in the brachial artery.
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