NDLI: Blood pressure difference between the measurements taken during cuff inflation and deflation

Content Provider	IEEE Xplore Digital Library
Author	Dingchang Zheng Di Marco, L.Y. Murray, A.
Copyright Year	2012
Description	Author affiliation: Medical Physics, Newcastle University, Newcastle upon Tyne, UK (Dingchang Zheng; Di Marco, L.Y.; Murray, A.)
Abstract	There is little quantitative clinical data available to support blood pressure measurement accuracy during cuff inflation. This study aimed to provide these data. Manual auscultatory systolic and diastolic blood pressures (SBP and DBP) were obtained from 15 subjects during cuff inflation and deflation. During the measurement, the oscillometric cuff pressure was inflated and deflated linearly at the same rate of 2–3 mmHg/s, and was recorded digitally for off-line analysis. Automated mean arterial pressures (MAPs) were then determined from both cuff inflation and deflation, corresponding to the cuff pressures at the peak of the 6th order polynomial model envelope fitted to the sequence of oscillometric pulse amplitudes. The manual SBP, manual DBP and automated MAP measured during cuff inflation and deflation were finally compared. The manual SBP measured during cuff inflation was significantly lower by 4.3 mmHg (mean±SD: 110.6±9.7 vs 114.9±9.0) than that measured during cuff deflation (P<0.001). However, the manual DBP from cuff inflation was significantly higher by 3.0 mmHg (76.7±7.8 vs 73.6±7.2) than that from cuff deflation (P<0.01), and the automated MAP from cuff inflation was also significantly higher by 4.5 mmHg (88.3±7.4 vs 83.9±8.7) (P<0.01). In conclusion, this study quantitatively showed that blood pressures measured during cuff inflation and deflation were different.
Starting Page	729
Ending Page	732
File Size	196313
Page Count	4
File Format	PDF
ISBN	9781467320764
ISSN	2325887X
e-ISBN	9781467320771
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-09
Publisher Place	Poland
Access Restriction	Subscribed
Rights Holder	Creative Commons Attribution License 2.5 (CCAL)
Subject Keyword	Blood pressure Manuals Pressure measurement Biomedical measurements Accuracy Medical services Polynomials
Content Type	Text
Resource Type	Article
Subject	Computer Science Cardiology and Cardiovascular Medicine

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