TRANSCEPHALIC ELECTRICAL-IMPEDANCE PROVIDES A MEANS FOR QUANTIFYING PULSATILE CEREBRAL BLOOD-VOLUME CHANGES FOLLOWING HEAD-UP TILT

Authors
GRONLUND J JALONEN J VALIMAKI I
Citation
J. Gronlund et al., TRANSCEPHALIC ELECTRICAL-IMPEDANCE PROVIDES A MEANS FOR QUANTIFYING PULSATILE CEREBRAL BLOOD-VOLUME CHANGES FOLLOWING HEAD-UP TILT, Early human development, 47(1), 1997, pp. 11-18
Citations number
28
Categorie Soggetti
Obsetric & Gynecology",Pediatrics
Journal title
Early human development → ACNP
ISSN journal
03783782
Volume
47
Issue
1
Year of publication
1997
Pages
11 - 18
Database
ISI
SICI code
0378-3782(1997)47:1<11:TEPAMF>2.0.ZU;2-I
Abstract
Transcephalic electrical impedance (Delta Z) was used to assess pulsat ile cerebral blood volume changes while tilting nine premature (30-34 weeks) infants 20 degrees head up. High-frequency (1.50-4.00 Hz) Delta Z variability decreased 27% while heart rate did not show any change. We would like to suggest that the variability of transcephalic electr ical impedance analysed with spectral estimation seems to provide a me ans for quantifying alterations in cerebral circulation.