Confounding physiologic parameters in pulse transit time monitoring of children

Foo, J. Y. A., Wilson, S. J., Williams, G. R, Harris, M-A. and Cooper, D. M (2005). Confounding physiologic parameters in pulse transit time monitoring of children. In: Prof. K.P. Adlassnig and Prof. M. Bracale, 3rd International Association of Science and Technology for Development (IASTED) International Conference on Biomedical Engineering (BioMed 2005). 3rd IASTED International Conference on Biomedical Engineering, Innsbruck, Austria, (345-348). 16-18 February 2005.


Author Foo, J. Y. A.
Wilson, S. J.
Williams, G. R
Harris, M-A.
Cooper, D. M
Title of paper Confounding physiologic parameters in pulse transit time monitoring of children
Conference name 3rd IASTED International Conference on Biomedical Engineering
Conference location Innsbruck, Austria
Conference dates 16-18 February 2005
Proceedings title 3rd International Association of Science and Technology for Development (IASTED) International Conference on Biomedical Engineering (BioMed 2005)
Place of Publication Calgary, Canada
Publisher ACTA Press
Publication Year 2005
Sub-type Fully published paper
ISBN 0-88986-476-4
Editor Prof. K.P. Adlassnig
Prof. M. Bracale
Volume 2005
Start page 345
End page 348
Total pages 4
Collection year 2005
Abstract/Summary Pulse Transit Time (PTT) measurement has showed potential in non-invasive monitoring of changes in blood pressure. In children, the common peripheral sites used for these studies are a finger or toe. Presently, there are no known studies conducted to investigate any possible physiologic parameters affecting PTT measurement at these sites for children. In this study, PTT values of both peripheral sites were recorded from 64 children in their sitting posture. Their mean age with standard deviation (SD) was 8.2 2.6years (ranged 3 to 12years). Subjects' peripheries path length, heart rate (HR), systolic (SBP) and diastolic blood pressure (DBP) were measured to investigate any contributions to PTT measurement. The peripheral pulse timing characteristic measured by photoplethysmography (PPG) shows a 59.5 8.5ms (or 24.8 0.4%) difference between the two peripheries (p<0.05). The results also revealed PTT is directly proportional to age (p<0.05). HR, SBP, peripheral path length and peripheral site also contributed significantly (p<0.05) to PTT variations, except for DBP. Results also suggest an upward trend in PTT with age. Hence, changes in any of these physiologic parameters can affect the nominal PTT value of a child.
Subjects E1
291500 Biomedical Engineering
730200 Public Health
Q-Index Code E1

 
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Created: Thu, 23 Aug 2007, 21:03:43 EST