Clinical applications of pulse transit time in paediatric critical care

Foo, J. Y. A. and Wilson, S. J. (2009) Clinical applications of pulse transit time in paediatric critical care. Journal of Medical Engineering and Technology, 33 1: 79-86. doi:10.1080/03091900701860210

Author Foo, J. Y. A.
Wilson, S. J.
Title Clinical applications of pulse transit time in paediatric critical care
Journal name Journal of Medical Engineering and Technology   Check publisher's open access policy
ISSN 0309-1902
Publication date 2009
Year available 2009
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1080/03091900701860210
Volume 33
Issue 1
Start page 79
End page 86
Total pages 8
Place of publication London, United Kingdom
Publisher Informa Healthcare
Collection year 2010
Language eng
Subject 2204 Religion and Religious Studies
Abstract A simple and non-invasive technique, termed pulse transit time (PTT), has shown its potential in long-term investigations such as respiratory sleep studies and cardiovascular studies. Based on these findings, the PTT technique shows relevance for continuous haemodynamic monitoring in critical care. The objective of this review is to understand the potential, applications and limitations of PTT in this clinical setting. Present non-invasive haemodynamic monitoring methods such as automated oscillometric blood pressure (BP) and auscultatory techniques have their known limitations. They tend to underestimate systolic BP while overestimating diastolic BP. Due to the periodic increase in cuff pressure cycles during data acquisition, these techniques may cause much discomfort in elderly geriatric patients, or lessen the cooperation of younger paediatric patients. Thus, there can be adverse effects on therapeutic decisions and possibly clinical outcomes. Documented evidences have indicated that changes observed in PTT are inversely correlated to the corresponding BP changes. In critical care, a simple and accommodating technique like PTT may be useful in providing better comfort for patients during extended monitoring. Being a semi-quantitative measure, blanket recommendations for its utility can then become possible. The basic instrumentations needed are often part of standard critical care monitoring system. Furthermore, PTT also has the potential to monitor the often tachypnoeic respiratory dependent BP changes seen in small infants during critical care.
Keyword Blood pressure
Haemodynamic monitoring
Long term measurement
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: School of Information Technology and Electrical Engineering Publications
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