[Acoustically evoked brain magnetic activity in normal and growth retarded fetuses during the third trimester of pregnancy].
The fetal magnetoencephalogram with a 31 chanal biomagnetometer made by Philips was measured in a fetal 1F-phase in 20 normotroph unimpaired and in 14 growth retarded fetuses with a birth weight < 5 percentile after completed 36th gestational week. Trough defined acoustic stimulations, which were applied over the maternal abdominal wall, it was possible to measure acoustic evoked cerebromagnetic field changes using a special computer programs. The registrated evoked cerebromagnetic field changes had a latence time of 112.8 +/- 18.4 ms in normotroph fetuses and 130.9 +/- 18.5 ms in hypotroph fetuses. The difference was significant (p < 0.01). The presented results lead to the conclusions that the fetal magnetoencephalography makes a differentiation between normal and disturbed fetal cerebral integrity possible.
Klinik für Frauenheilkunde und Geburtshilfe, Abteilung Geburtshilfe, Friedrich-Schiller-Universität Jena.
W
W
Gross
C
C
Kähler
K
K
Koch
H
H
Nowak
M
M
Michels
H J
HJ
Seewald
D005314:Embryonic and Fetal Development / Q000502:physiology; D005072:Evoked Potentials, Auditory; D005260:Female; D005317:Fetal Growth Retardation / Q000175:diagnosis* / Q000503:physiopathology*; D005311:Fetal Hypoxia / Q000175:diagnosis* / Q000503:physiopathology*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D015225:Magnetoencephalography; D008297:Male; D011247:Pregnancy; D011263:Pregnancy Trimester, Third
Akustisch ausgelöste hirnmagnetische Aktivitäten bei normotrophen und wachstumsretardierten Feten im III. Trimenon der Schwangerschaft.