Assessment of techniques used to evaluate the effect of Posture and Cardiac Output on Cerebral Autoregulation

Brian M. Deegan, Maria C. Geraghty, Ryan M. Hodgeman, Adam A. Reisner, Gearóid O'Laighin, Jorge M. Serrador

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

In this study, the role of cardiac output in Cerebral Autoregulation was assessed. Mean arterial pressure, cerebral blood flow velocity (middle and anterior cerebral artery), stroke volume, cardiac output, total peripheral resistance and cerebral autoregulatory index were assessed in 3 healthy young males and 4 healthy young females during seated and upright thigh cuff testing. Two different methods (long axis left ventricular echocardiography and Modelflow) of evaluating stroke volume and cardiac output were compared. The results showed that cerebral autoregulation was less effective in the upright posture in all subjects. Females had better autoregulation in the anterior cerebral artery, whereas males had better autoregulation in the middle cerebral artery. Cardiac output does not appear to play an important role in cerebral autoregulation during thigh cuff testing. Estimations of cardiac output and stroke volume did not strongly correlate between Modeflow and long axis left ventricular echocardiography.

Original languageEnglish (US)
Title of host publicationProceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
PublisherIEEE Computer Society
Pages1992-1995
Number of pages4
ISBN (Print)9781424418152
DOIs
StatePublished - 2008
Externally publishedYes
Event30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - Vancouver, BC, Canada
Duration: Aug 20 2008Aug 25 2008

Publication series

NameProceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08 - "Personalized Healthcare through Technology"

Other

Other30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'08
Country/TerritoryCanada
CityVancouver, BC
Period8/20/088/25/08

All Science Journal Classification (ASJC) codes

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering
  • Health Informatics

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