Comparison of two instruments measuring carotid-femoral pulse wave velocity: Vicorder versus SphygmoCor

Leeuwen-Segarceanu, Elena M. van; Tromp, Wilma F.; Bos, Willem Jan W.; Vogels, O.J.M.; Groothoff, Jaap W.; Lee, Johanna H. van der

doi:10.1097/hjh.0b013e32833a8b83

Cited by 46 publications

(35 citation statements)

References 15 publications

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“…A number of comparative and validation studies have already been performed using different settings. 19,21 The aim of the present work was to provide comparative values for PWV in children, teenagers and young adults across a broad spectrum of PWV using PP, SC and VIC devices adhering to or surpassing the pediatric portion of the guidelines proposed. 29 The applanation tonometry devices PP and SC are invasively validated.…”

Section: Discussionmentioning

confidence: 99%

“…21 These authors referred to technical difficulties especially with the use of the carotid cuff as well as lack of experience or previous descriptions of the use of the VIC, which may have contributed to the results of their study. In the study herein, we did not meet specific difficulties with the VIC device such that the standard deviations of the differences between the devices compared were in a much narrower range (0.71-0.75 m s À1 , see also Table 2).…”

Section: Discussionmentioning

confidence: 99%

“…10 A multitude of various methods and techniques have been used to assess PWV in adults such as applanation tonometry, 11,12 ultrasound, 13,14 methods using mechanotransducers 15 and computerized oscillometry; 16 furthermore, a number of comparative studies with diverging results have been published concerning the comparability of the different methods. [17][18][19][20][21] Instruments based on the principle of applanation tonometry (PulsePen (PP) (DiaTecne, Milan, Italy) and Sphygmocor (SC) (AtCor, Sydney, Australia) have been extensively used. They are easily applied in adults and children and have a fair reproducibility.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of pulse wave velocity in children and young adults: a comparative study using three different devices

et al. 2011

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To estimate the value of pulse wave velocity (PWV) in pediatric cardiovascular disease, prospective studies are needed. Various instruments based on different measurement principles are proposed for use in children, hence the need to test the comparability of these devices in this younger population. The objective of this study was to compare PWV measured by oscillometry (Vicorder (VIC)) with the gold standard of applanation tonometry (PulsePen (PP), Sphygmocor (SC)). PWV was measured in 98 children and young adults (age: 16.7(6.3-26.6) years (median(range)) with the above three devices at the same visit under standardized conditions. Mean PWV measured by VIC was significantly lower than that measured by SC and PP. There was no difference following path length correction of the VIC measurement (using the distance between the jugular notch and the center of the femoral cuff), (PP: 6.12(1.00), SC: 5.94(0.91), VIC: 6.14(0.75) m s À1 ). Velocities measured by the three devices showed highly significant correlations. Bland-Altman analysis revealed excellent concordance between all three devices, however, there was a small but significant proportional error in the VIC measurements showing a trend toward lower PWV measured by VIC at higher PWV values. Our study provides data on the three most frequently used instruments in pediatrics. Following path length correction of the VIC, all three devices provided comparable results. Thus, our work allows extrapolating data between previously established normal PWV values for children and forthcoming studies using these instruments to assess children at long-term risk of cardiovascular disease. The small proportional error of VIC needs additional technical development to improve the accuracy of the measurements.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Measurement of pulse wave velocity in children and young adults: a comparative study using three different devices

et al. 2011

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“…It is considered to be less time-consuming and less operator-skill dependent. The reproducibility of the Vicorder has been assessed in comparison with the more established SphygmoCor system in healthy subjects 9,12 and in children. 13,14 However, to date, there are no studies in the literature comparing between the two devices in the context of peripheral arterial disease (PAD).…”

Section: Introductionmentioning

confidence: 99%

The Vicorder device compared with SphygmoCor in the assessment of carotid–femoral pulse wave velocity in patients with peripheral arterial disease

et al. 2012

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To assess the reliability and reproducibility of the Vicorder's carotid-femoral pulse wave velocity (cfPWV) measurements in patients with peripheral arterial disease (PAD) and to compare between cfPWV measurements obtained using the Vicorder with those obtained using the SphygmoCor device as a reference. Some 30 patients with PAD (23 men, mean age 64.9±7.5) underwent cfPWV measurement twice by a single investigator during one visit using the Vicorder and the SphygmoCor according to the manufacturer's instructions. Intra-rater reproducibility for each device was assessed using intraclass correlation coefficients (ICC) and Bland-Altman method. The latter was also used to compare between the two devices. The mean difference (s.d.) between repeated measurements was 0.03±0.92 m s(-1), P=0.85 and 0.01±0.54 m s(-1), P=0.91 for the SphygmoCor and Vicorder, respectively. Measurements of cfPWV were highly reproducible using both devices (ICC=0.94 and 0.92, for the Vicorder and SphygmoCor, respectively). Limits of Agreement using the Bland-Altman method were -1.07 to 1.09 m s(-1) and -1.79 to 1.85 m s(-1) for the Vicorder and the SphygmoCor, respectively. Bland-Altman plots indicated that 90% of the cfPWV measurements using the Vicorder and 93% of the measurements using the SphygmoCor fell within two s.d.s of the mean difference. Transit time (TT) differed significantly between the two devices (mean difference 30±9.2 m s, P<0.001), with the Vicorder recording higher values. Nevertheless, the two devices recorded nearly similar cfPWV measurements (mean difference -0.69±1.6 m s(-1), P=0.02) with 97% of cfPWV values falling within two s.d. values of the mean difference on Bland-Altman plot. Both devices generated highly reproducible cfPWV measurements in patients with PAD and were in good agreement when compared with each other. However, the discrepancy in TT between the two devices lead to the Vicorder producing lower values of cfPWV at high values produced by the SphygmoCor.

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“…The Vicorder® device can provide carotid femoral PWV though use of cuffs on the neck and leg. Early assessment has provided results that are more variable than standard techniques [4,67].…”

Section: Brachial Cuffmentioning

confidence: 99%

Noninvasive Studies of Central Aortic Pressure

O’Rourke

Adji

2011

Curr Hypertens Rep

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Our purpose is to review noninvasive methods for measuring central arterial pressure. Indices of central arterial pressure measured from central aortic and peripheral arterial waveforms have shown value in predicting cardiovascular events and death, as well as in guiding therapeutic management. This article reviews noninvasive techniques of measuring central arterial pressure that have been validated against intra-arterial pressure. This paper explains methods to derive central (aortic and carotid) pressure from radial and brachial sites. It focuses on specific issues of brachial calibration applied to carotid pressure waveforms, which were regarded as a surrogate of aortic pressures used in three major studies (Framingham, Asklepios, and Australian National Blood Pressure 2 studies). We explain why radial-based methods are superior to carotid-based methods for estimating central pressure. Physiological principles of pressure measurement need be satisfied to ensure accurate recording.

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Comparison of two instruments measuring carotid-femoral pulse wave velocity: Vicorder versus SphygmoCor

Abstract: The LoA of both instruments exceed a value of 1.5 m/s. The LoA of the Vicorder PWVcf measurements are considered too wide for using this technique reliably in adults or in children.

Cited by 46 publications

References 15 publications

Measurement of pulse wave velocity in children and young adults: a comparative study using three different devices

Measurement of pulse wave velocity in children and young adults: a comparative study using three different devices

The Vicorder device compared with SphygmoCor in the assessment of carotid–femoral pulse wave velocity in patients with peripheral arterial disease

Noninvasive Studies of Central Aortic Pressure

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