Document Detail


Comparison of Noninvasive Assessments of Central Blood Pressure Using General Transfer Function and Late Systolic Shoulder of the Radial Pressure Wave.
MedLine Citation:
PMID:  23999585     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Central systolic blood pressure (cSBP) can be derived by the general transfer function of the radial pressure wave, as used in the SphygmoCor device, or by regression equation from directly measured late systolic shoulder of the radial pressure wave (pSBP2), as used in the Omron HEM-9000AI device. The aim of this study was to compare the SphygmoCor estimates of cSBP with 2 estimates of cSBP provided by the Omron HEM-9000AI (cSBP, pSBP2) in a large cohort of the white population.
METHODS: In 391 patients aged 52.3±13.5 years (46% men) from the Czech post-MONICA Study, cSBP was measured using the SphygmoCor and Omron HEM-9000AI devices in random order.
RESULTS: Omron cSBP and pSBP2 were perfectly correlated (r = 1.0; P < 0.0001). There was a strong correlation (r = 0.97; P < 0.0001) between Omron and SphygmoCor cSBP estimates, but Omron estimate was 13.1±4.7mm Hg higher than SphygmoCor cSBP. On the other hand, Omron pSBP2 strongly correlated with SphygmoCor cSBP (r = 0.97; P < 0.0001) and was 1.7±4.2mm Hg lower than SphygmoCor cSBP. In multivariable analysis, anthropometric and cardiovascular risk factors explained only 10% of the variance of the cSBP difference between devices while explaining 52% of the systolic blood pressure amplification variance.
CONCLUSIONS: Estimation of cSBP based on the late systolic shoulder of the radial wave provides a comparable accuracy with the validated general transfer function. When comparing Omron HEM-9000AI and SphygmoCor estimates of cSBP, Omron pSBP2 should be used. The difference between both devices in cSBP may be explained by differences in calibration.
Authors:
Peter Wohlfahrt; Alena Krajcoviechová; Jitka Seidlerová; Otto Mayer; Jan Filipovsky; Renata Cífková
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-9-2
Journal Detail:
Title:  American journal of hypertension     Volume:  -     ISSN:  1941-7225     ISO Abbreviation:  Am. J. Hypertens.     Publication Date:  2013 Sep 
Date Detail:
Created Date:  2013-9-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8803676     Medline TA:  Am J Hypertens     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Center for Cardiovascular Prevention, Charles University in Prague, First Faculty of Medicine, and Thomayer Hospital, Prague, Czech Republic.
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