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Measurement of central systolic blood pressure by pulse volume plethysmography with a noninvasive blood pressure monitor.

Abstract：

BACKGROUND:Central systolic blood pressure (SBP) can be estimated by an oscillometric method developed from a pulse volume plethysmography (PVP) device. The present study applied this novel method to a noninvasive blood pressure monitor (NBPM). METHODS:We enrolled 50 patients (37 men, age range 30-84 years) referred for cardiac catheterization. Invasive right brachial and central aortic pressures (using a dual-sensor pressure catheter), and noninvasive left brachial SBP and diastolic blood pressure (DBP), and PVP waveform (using a customized NBPM) were simultaneously recorded. Central SBP was estimated by analysis of the PVP waveform calibrated to the noninvasive SBP and DBP, using both the original (CSBP-O) and the newly generated (CSBP-N) regression equations. The reproducibility of the invasive central SBP by CSBP-O and CSBP-N was examined using the concordance correlation coefficient. RESULTS:Overall, the invasive central aortic SBP ranged 86-176 with a mean of 124 ± 21 mm Hg. The mean differences between the estimated and the invasive central SBP were -1.3 ± 6.7 mm Hg for CSBP-O and 0.0 ± 6.2 mm Hg for CSBP-N, respectively. The concordance correlation coefficients for CSBP-O and CSBP-N were 0.94 (95% confidence interval (CI): 0.93-0.94) and 0.95 (95% CI: 0.95-0.96), and both were significantly better than that for the noninvasive brachial SBP (0.87, 0.84-0.91) indicated by non-overlapping CIs. CONCLUSIONS:The PVP method for noninvasive estimation of central SBP can be applied to a commonly used NBPM. Whether the NBPM-derived central SBP is superior to the noninvasive brachial SBP in the prediction of cardiovascular risks remains to be investigated.

journal_name

Am J Hypertens

journal_title

American journal of hypertension

authors

Sung SH,Cheng HM,Chuang SY,Shih YT,Wang KL,Chen YH,Lin SJ,Yu WC,Chen CH

doi

10.1038/ajh.2011.259

subject

Has Abstract

pub_date

2012-05-01 00:00:00

pages

542-8

issue

5

eissn

0895-7061

issn

1941-7225

pii

ajh2011259

journal_volume

25

pub_type

杂志文章

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