Forehead Skin Blood Flow in Normal Neonates during Active and Quiet Sleep, Measured with a Diode Laser Doppler Instrument

Wiley - Tập 77 Số 2 - Trang 220-225 - 1988
H.E. Suichies1, Jan G. Aarnoudse1, A Okken1, H.W. Jentink2, Frits F. M. de Mul2, Jan Greve2
1Department of Obstetrics and Pediatrics, University Hospital Groningen, Groningen
2Department of Applied Physics, Twente University of Technology, Enschede, The Netherlands

Tóm tắt

ABSTRACT. 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.

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Thông tin xuất bản

Wiley

Tập 77 Số 2

220-225

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