Premium
Forehead Skin Blood Flow in Normal Neonates during Active and Quiet Sleep, Measured with a Diode Laser Doppler Instrument
Author(s) -
SUICHIES H. E.,
AARNOUDSE J. G.,
OKKEN A.,
JENTINK H. W.,
MUL F. F. M.,
GREVE J.
Publication year - 1988
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.1988.tb10633.x
Subject(s) - medicine , laser doppler velocimetry , quiet , blood flow , forehead , sleep (system call) , anesthesia , cardiology , surgery , physics , quantum mechanics , computer science , operating system
. Changes in forehead skin blood flow during active and quiet sleep were determined in 16 healthy neonates using a recently developed semi‐conductor laser Doppler flow meter without light conducting fibres. Measurements were carried out at a postnatal age varying from 5 hours to 7 days. The two sleep states could be distinguished in 17 recordings. The mean skin blood flow values during active sleep were significantly higher ( p <0.01) than those during quiet sleep, the mean increase being 28.1%. The variability of the flow signal, expressed as the coefficient of variation, changed significantly from 23.1% during active sleep to 18.2% during quiet sleep.