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

D. Zheng, Luigi Y. Di Marco, A. Murray

Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

1 Citation (Scopus)
130 Downloads (Pure)


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.
Original languageEnglish
Title of host publicationComputing in Cardiology
Number of pages4
ISBN (Electronic)978-1-4673-2077-1
ISBN (Print)978-1-4673-2076-4
Publication statusPublished - 2012
Externally publishedYes
EventComputing in Cardiology Conference 2012 - Krakow, Poland
Duration: 9 Sep 201212 Sep 2012

Publication series

ISSN (Print)0276-6574
ISSN (Electronic)2325-8853


ConferenceComputing in Cardiology Conference 2012

Bibliographical note

Since volume 33 (2006), CinC has been an open-access publication, in which copyright in each article is held by its authors, who grant permission to copy and redistribute their work with attribution, under the terms of the Creative Commons Attribution License.


  • Blood pressure
  • Manuals
  • Pressure measurement
  • Biomedical measurements
  • Accuracy
  • Medical services
  • Polynomials


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