Influence of Induced Blood Pressure Variability on the Assessment of Cerebral Autoregulation in Patients after Cardiac Arrest
Joint Authors
van den Brule, J. M. D.
van der Hoeven, J. G.
Hoedemaekers, C. W. E.
van Kaam, C. R.
Claassen, J. A. H. R.
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-06-06
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Objective.
To determine if increasing variability of blood pressure influences determination of cerebral autoregulation.
Methods.
A prospective observational study was performed at the ICU of a university hospital in the Netherlands.
13 comatose patients after cardiac arrest underwent baseline and intervention (tilting of bed) measurements.
Mean flow velocity (MFV) in the middle cerebral artery and mean arterial pressure (MAP) were measured.
Coefficient of variation (CV) was used as a standardized measure of dispersion in the time domain.
In the frequency domain, coherence, gain, and phase were calculated in the very low and low frequency bands.
Results.
The CV of MAP was significantly higher during intervention compared to baseline.
On individual level, coherence in the VLF band changed in 5 of 21 measurements from unreliable to reliable and in 6 of 21 measurements from reliable to unreliable.
In the LF band 1 of 21 measurements changed from unreliable to reliable and 3 of 21 measurements from reliable to unreliable.
Gain in the VLF and LF band was lower during intervention compared to baseline.
Conclusions.
For the ICU setting, more attention should be paid to the exact experimental protocol, since changes in experimental settings strongly influence results of estimation of cerebral autoregulation.
American Psychological Association (APA)
van den Brule, J. M. D.& van Kaam, C. R.& van der Hoeven, J. G.& Claassen, J. A. H. R.& Hoedemaekers, C. W. E.. 2018. Influence of Induced Blood Pressure Variability on the Assessment of Cerebral Autoregulation in Patients after Cardiac Arrest. BioMed Research International،Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1128922
Modern Language Association (MLA)
van den Brule, J. M. D.…[et al.]. Influence of Induced Blood Pressure Variability on the Assessment of Cerebral Autoregulation in Patients after Cardiac Arrest. BioMed Research International No. 2018 (2018), pp.1-6.
https://search.emarefa.net/detail/BIM-1128922
American Medical Association (AMA)
van den Brule, J. M. D.& van Kaam, C. R.& van der Hoeven, J. G.& Claassen, J. A. H. R.& Hoedemaekers, C. W. E.. Influence of Induced Blood Pressure Variability on the Assessment of Cerebral Autoregulation in Patients after Cardiac Arrest. BioMed Research International. 2018. Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1128922
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128922