DocumentCode :
1584646
Title :
Cuff-less and Noninvasive Measurements of Arterial Blood Pressure by Pulse Transit Time
Author :
Poon, C.C.Y. ; Zhang, Y.T.
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin
fYear :
2006
Firstpage :
5877
Lastpage :
5880
Abstract :
The current blood pressure (BP) measurement devices are mostly built on the principle of auscultation, oscillometry or tonometry, all of which use an inflatable cuff to occlude or unload the artery. The need of a cuff in these devices limits the further reduction in size and power consumption, and restricts the frequency and ease of their usage. Therefore, this study aims to develop a cuff-less and noninvasive technique for measuring BP by pulse transit time. The technique was evaluated on 85 subjects, aged 57plusmn29 yrs., including 36 males and 39 hypertensives, over an average period of 6.4 wks. A total of 999 pairs of systolic BP (SBP) and diastolic BP (DBP) estimations were made. The average of BP readings reported by an experienced registered nurse and those obtained from a clinically approved automatic BP meter was used as reference. It is found that the estimated SBP and DBP differed from the reference BP by 0.6plusmn9.8 mmHg and 0.9plusmn5.6 mmHg respectively. When compared to the AAMI requirement (5plusmn8 mmHg for both SBP and DBP estimation), the results suggest that the cuff-less technology has great potential to be developed into wearable devices that are useful in self BP monitoring for home healthcare and eventually in clinical diagnosis
Keywords :
biomedical equipment; blood pressure measurement; blood vessels; patient diagnosis; patient monitoring; 28 to 86 yr; artery; auscultation; clinical diagnosis; cuff-less arterial blood pressure measurements; diastolic BP; home healthcare; oscillometry; pulse transit time; systolic BP; tonometry; wearable devices; Arterial blood pressure; Arteries; Biomedical monitoring; Blood pressure; Current measurement; Energy consumption; Frequency; Noninvasive treatment; Pressure measurement; Pulse measurements;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
Type :
conf
DOI :
10.1109/IEMBS.2005.1615827
Filename :
1615827
Link To Document :
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