Document Detail


Faster oscillometric manometry does not sacrifice the accuracy of blood pressure determination.
MedLine Citation:
PMID:  15199307     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Faster oscillometry enables one to track rapid pressure changes. We therefore examined whether it was possible to shorten the measurement time without sacrificing accuracy. We accelerated and linearized cuff deflation and determined systolic and diastolic pressure values by the appearance and disappearance of oscillometric waves based on the interpolated cuff pressure-oscillometric wave amplitude relationship. The accuracy of faster oscillometry was examined by comparing correlations between invasive radial and oscillometric brachial pressure with either the conventional or the faster oscillometry in 23 patients (32+/-16 measurement pairs). Faster oscillometry shortened the measurement time from 27.7+/-3.5 s to 17.1+/-2.6 s. Neither pressure levels nor heart rate altered the time required for measurement. Bland-Altman analysis indicated that mean and standard deviation of difference between oscillometric and invasive systolic pressure was comparable (conventional, 2.1+/-7.5 mmHg; faster, 1.4+/-7.3 mmHg) without correlations between difference and average of systolic pressure. Similar differences (conventional, 5.0+/-6.8 mmHg; faster, 4.9+/-5.8 mmHg) and lack of correlations were also found for diastolic pressure. In conclusion, we succeeded in shortening the oscillometric measurement time to approximately 60% of the original time without sacrificing accuracy. This was achieved by acceleration and linearization of cuff deflation and by interpolation of the relationship between cuff pressure and oscillometric wave amplitude.
Authors:
Masaru Sugimachi; Hirotsugu Okamoto; Sumio Hoka; Kenji Sunagawa
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Publication Detail:
Type:  Comparative Study; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Blood pressure monitoring     Volume:  9     ISSN:  1359-5237     ISO Abbreviation:  Blood Press Monit     Publication Date:  2004 Jun 
Date Detail:
Created Date:  2004-06-16     Completed Date:  2005-02-16     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9606438     Medline TA:  Blood Press Monit     Country:  England    
Other Details:
Languages:  eng     Pagination:  135-41     Citation Subset:  IM    
Affiliation:
Department of Cardiovascular Dynamics, National Cardiovascular Centre Research Institute, Suita, Osaka, Japan. sugimach@ri.ncvc.go.jp
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Aged
Aged, 80 and over
Algorithms
Blood Pressure
Blood Pressure Determination / instrumentation*,  standards
Data Collection
Equipment Design
Female
Heart Rate
Humans
Male
Manometry
Middle Aged
Oscillometry*
Pulse
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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