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• W1571310342 abstract "Despite the clinical importance of pulse-wave velocity (PWV), there are no standards for accurate carotid-radial pulse-wave measurement in uremic patients with respect to carotid-femoral measurement. We assessed the reproducibility of PWV values using the carotid-radial PWV measurement. We have measured the carotid-femoral PWV and carotid-radial PWV with an automated system (Pulse Pen, DiaTecne) using 2 different blind operators in 105 hemodialysis (HD) patients. The carotid-femoral waveforms were acquired by the first blind operator simultaneously with 2 pressure-sensitive transducers and the transit time of the pulse was calculated using the system software. Similarly, the second blind operator acquired the carotid-radial waveforms. The two operators performed 2 consecutive measurements from the same subject, in a random order. In fact, after the first operator had completed 2 consecutive measurements from 1 subject, all of the sensors were detached, and the second operator attached sensors again to the same subject. The measurements were performed during interval of a midweek dialysis-free day. To evaluate the reproducibility of the system, both within-observer and between-observer analyses were performed. We studied 105 dialysis patients (HD) and 20 controls. All HD patients had three dialysis sessions lasting at least 4 h/wk. A total of 28 patients (26.7%) had diabetic nephropathy. The mean age of HD was 64.6 ± 16.1 years, the body weight was 71.1 ± 15.1 kg, and the height was 164.6 ± 6.1 cm. All population studied is referral at a tertiary care from at least 6 months (mean 11.1 ± 2.1 months). A total of 45% of patients are smokers or ex-smokers. The PWV of carotid-femoral is 8.58 ± 3.99 and the PWV of carotid-radial is 8.70 ± 4.01 m/sec, respectively, by the first and the second operator; the difference of PWV (femoral-radial measure) is -0.037 ± 0.99 m/sec. The linear correlation of carotid-femoral vs. carotid-radial PWV measurements is the highest (R(2) =0.90). The results regarding reproducibility, including mean differences and standard deviations, standard errors, and correlation coefficients were analyzed for each regional PWV value for the between-observer and within-observer studies. All of the measurements showed significant correlation coefficients, ranging from 0.94 to 0.98. The reproducibility of regional PWV values for 2 consecutive measurements from the same subject was also analyzed using Bland-Altman plots, with the reproducibility expressed as the mean difference and 2 standard deviations between the measurements obtained by the 2 operators during carotid-femoral and carotid-radial measurements. Carotid-radial PWV measurement provides an accurate analysis with a high reproducibility with respect to carotid-femoral PWV measurement, and it can be used for arterial stiffness analysis in hemodialysis patients." @default.
• W1571310342 created "2016-06-24" @default.
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• W1571310342 date "2010-10-01" @default.
• W1571310342 modified "2023-10-05" @default.
• W1571310342 title "Reproducibility of regional pulse-wave velocity in uremic subjects" @default.
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• W1571310342 doi "https://doi.org/10.1111/j.1542-4758.2010.00471.x" @default.
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