In the present study, the repeatability of three techniques for measuring peripheral PWV (pulse wave velocity) has been studied. A transcranial Doppler provided a wave reading from the middle cerebral artery. Using the transit time between the R-wave of an ECG and the ‘foot’ of this wave we were able to calculate a PWV (PWV-brain). An ear clip transducer provided a pressure wave reading (PWV-ear). A third pressure reading came from a Finapres transducer on the left middle finger (PWV-finger). The PWV was calculated as distance between two points/transit time of the pulse wave. Eleven volunteers had three sets of readings averaged for each technique taken in two separate sessions. There was good agreement between observers for the mean PWV values, and good agreement for mean results in different sessions. The RC%s (repeatability coefficient percentages) for between-observer repeatability in each session were good and approximately equivalent for PWV-finger (5–7%) and PWV-brain (5–7%). The repeatability of the PWV-ear measurement was less satisfactory (8–18%). The RC% for the same observer between sessions was less good, being 11% for the PWV-finger, 16–17% for PWV-brain and 11–19% for PWV-ear. The RC%s for the inter-session inter-observer measurements were between 10.7–12.1% for the PWV-finger, 14.7–19.5% for PWV-brain and 8.3–15% for PWV-ear. The transit time RC%s were lower in most measurements. The between-observer repeatability of all measures was satisfactory. Owing to the less good repeatability on different occasions, the use of PWV-brain and PWV-ear will depend on the magnitude of differences to be expected.
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May 2005
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Research Article|
April 22 2005
Repeatability of non-invasive measurement of intracerebral pulse wave velocity using transcranial Doppler
Sarah GLADDISH;
Sarah GLADDISH
*Faculty of Medicine, Imperial College, Hammersmith Hospital, Du Cane Road, London W12 0NN, U.K.
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Dulka MANAWADU;
Dulka MANAWADU
*Faculty of Medicine, Imperial College, Hammersmith Hospital, Du Cane Road, London W12 0NN, U.K.
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Winston BANYA;
Winston BANYA
*Faculty of Medicine, Imperial College, Hammersmith Hospital, Du Cane Road, London W12 0NN, U.K.
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James CAMERON;
James CAMERON
†Department of Vascular Sciences, Dandenong Hospital, David Street, Dandenong, Victoria 3175, Australia
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Christopher J. BULPITT;
Christopher J. BULPITT
*Faculty of Medicine, Imperial College, Hammersmith Hospital, Du Cane Road, London W12 0NN, U.K.
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Chakravarthi RAJKUMAR
*Faculty of Medicine, Imperial College, Hammersmith Hospital, Du Cane Road, London W12 0NN, U.K.
Correspondence: Dr Chakravarthi Rajkumar (email [email protected]).
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Publisher: Portland Press Ltd
Received:
August 23 2004
Revision Received:
November 19 2004
Accepted:
January 18 2005
Accepted Manuscript online:
January 18 2005
Online ISSN: 1470-8736
Print ISSN: 0143-5221
The Biochemical Society
2005
Clin Sci (Lond) (2005) 108 (5): 433–439.
Article history
Received:
August 23 2004
Revision Received:
November 19 2004
Accepted:
January 18 2005
Accepted Manuscript online:
January 18 2005
Citation
Sarah GLADDISH, Dulka MANAWADU, Winston BANYA, James CAMERON, Christopher J. BULPITT, Chakravarthi RAJKUMAR; Repeatability of non-invasive measurement of intracerebral pulse wave velocity using transcranial Doppler. Clin Sci (Lond) 1 May 2005; 108 (5): 433–439. doi: https://doi.org/10.1042/CS20040251
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