Related Experiment Video
Updated: Jul 14, 2026

Measuring the Carotid to Femoral Pulse Wave Velocity (Cf-PWV) to Evaluate Arterial Stiffness
Published on: May 3, 2018
Arterial stiffness, central blood pressures, and wave reflections in cardiomyopathy-implications for risk
Thomas Weber1, Johann Auer, Gudrun Lamm
1Cardiology Department, Klinikum Kreuzschwestern Wels, Austria.
Insights
In systolic heart failure patients, lower central pulse pressure and augmentation index indicate worse outcomes, contrary to general cardiovascular risk associations. Arterial function measures are influenced by left ventricular performance.
Area of Science:
- Cardiovascular physiology
- Arterial biomechanics
- Heart failure research
Background:
- Pulse pressure (PP), augmentation index (AIx), and pulse wave velocity (PWV) generally correlate with cardiovascular risk.
- However, in systolic heart failure, lower PP has been linked to poorer outcomes, suggesting a different relationship.
Purpose of the Study:
- To investigate the relationship between arterial function measures (central PP, AIx, PWV) and left ventricular performance in patients with cardiomyopathy (CMP).
- To compare these measures between CMP patients and healthy controls.
Main Methods:
- Applanation tonometry was used to assess central PP and AIx in 63 CMP patients and 126 matched controls.
- Aortic PWV was invasively measured in a subgroup of patients and controls.
- Ejection fraction (EF) was assessed as a measure of left ventricular performance.
Main Results:
- CMP patients had lower central PP and AIx compared to controls, despite similar age, gender, and brachial BP.
- Ejection fraction was significantly lower in CMP patients (29.9%) versus controls (72.2%).
- AIx was found to be an independent predictor of EF, and lower AIx values correlated with more advanced systolic dysfunction.
Conclusions:
- Central PP and AIx are influenced by left ventricular performance, particularly in systolic heart failure.
- Arterial stiffness measures like PWV may also be affected by ventricular function, contrary to general associations with cardiovascular risk.
Background:
In general, pulse pressure (PP), augmentation index (AIx), and pulse wave velocity (PWV) are directly and positively associated with cardiovascular risk. However, in patients with systolic heart failure, the opposite (ie, an association between a lower PP and a worse outcome) has been reported as well.
Methods And Results:
We assessed central PP and AIx, using applanation tonometry (SphygmoCor, AtCor Medical) in 63 patients with cardiomyopathy (CMP) and 126 controls, matched for age, gender, and brachial blood pressure (BP). All patients underwent coronary angiography for suspected coronary artery disease. In a subgroup (21 patients, 42 controls), we additionally measured aortic PWV invasively during catheter pullback. Mean age was 63.9 versus 64.1 years and ejection fraction (EF) was 29.9 versus 72.2% in patients versus controls, respectively. Calculated aortic systolic BP as well as invasively measured systolic BP was lower in patients versus controls. Central (but not peripheral) PP (33.8 versus 37.8 mm Hg, P = .01) and AIx (17.5 versus 23.3, P = .002) were lower and ejection duration was shorter (265 versus 314 ms, P < .00001) in patients as compared with controls. When we subdivided the CMP patients with respect to AIx, those with values below and equal to the median (median AIx = 17) had more advanced systolic dysfunction. In multiple regression analysis, EF was an independent predictor of AIx. PVW did not differ between CMP patients and controls (8.6 versus 8.2 m/s in patients versus controls, P = .43). Within the group of CMP patients, however, we observed a strong, positive correlation (r = 0.62, P = .003) between PWV and EF.
Conclusions:
Central PP, AIx, but also aortic PWV, key measures of arterial function, are susceptible to left ventricular performance.
Related Concept Videos
Cardiomyopathy IV: Restrictive Cardiomyopathy
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
Cardiomyopathy I: Introduction and Classification
Coronary Artery Disease I: Introduction
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation