Affordable Access

Do hematocrit and serum fibrinogen influence transcranial Doppler measurements?

Authors
  • Sohn, Y H
  • Kim, G W
  • Kim, J S
Type
Published Article
Journal
Journal of Korean medical science
Publication Date
Oct 01, 1997
Volume
12
Issue
5
Pages
405–408
Identifiers
PMID: 9364297
Source
Medline
License
Unknown

Abstract

To investigate the effect of hematocrit and serum fibrinogen on transcranial Doppler ultrasound (TCD) measurements, we performed, TCD tests and measured hematocrit and serum fibrinogen concentrations in 112 healthy adult volunteers. The mean velocities of the middle cerebral (r = -.37, p < .0001), internal carotid at siphon (r = -.14, p < .05) and cervical level (r = -.14, p < .05), vertebral (r = -.21, p < .005) and the basilar artery (r = -.33, p < .001) were significantly and inversely correlated with hematocrit, while serum fibrinogen weakly affected the mean velocities of the internal carotid artery. The subjects with low hematocrit (< or = 40%) showed significantly higher mean velocities of the middle cerebral, vertebral and basilar arteries than those with high hematocrit (> 40%). Considering the influence of the subject's age and gender, hematocrit is the strongest factor influencing the velocities of the middle cerebral and the basilar artery. These results suggest that hematocrit is an important variable for TCD measurements of the cerebral blood velocities and should be taken into account in TCD application.

Report this publication

Statistics

Seen <100 times