Diurnal variation in baseline heart rate of anencephalic fetuses

The diurnal change in baseline fetal heart rate (FHR) of four anencephalic fetuses at 20, 23, 24 and 30 weeks of gestation were examined. The mean baseline FHR in 00.00–06.00 h, 06.00–12.00 h, 12.00–18.00 h and 18.00–24.00 h were compared by one‐factor ANOVA and Scheffe's test in each case. The...

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Published inPsychiatry and clinical neurosciences Vol. 52; no. 2; pp. 173 - 174
Main Authors MURO, MASAMI, SHONO, HIDEAKI, ITO, YUJI, SUGIMORI, HAJIME
Format Journal Article Conference Proceeding
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.04.1998
Blackwell Publishing
Subjects
anencephalic fetus
Anencephaly - embryology
Anencephaly - physiopathology
Arousal - physiology
Autonomic Nervous System - physiology
Circadian Rhythm - physiology
diurnal variation
Female
fetal heart rate
Fetal Monitoring
Gestational Age
Heart Rate, Fetal - physiology
Humans
Infant, Newborn
Pregnancy
Suprachiasmatic Nucleus - abnormalities
Suprachiasmatic Nucleus - physiopathology
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Summary:The diurnal change in baseline fetal heart rate (FHR) of four anencephalic fetuses at 20, 23, 24 and 30 weeks of gestation were examined. The mean baseline FHR in 00.00–06.00 h, 06.00–12.00 h, 12.00–18.00 h and 18.00–24.00 h were compared by one‐factor ANOVA and Scheffe's test in each case. The diurnal variations in baseline FHR were recognized in all subjects (P < 0.01). In 3/4 subjects, the lowest values were at 00.00–06.00 h. The diurnal variation in baseline FHR might be caused by maternal factors because it was present even in the anencephalic fetuses that had no central nervous system having the oscillators of the circadian rhythm.
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ISSN:1323-1316
1440-1819
DOI:10.1111/j.1440-1819.1998.tb01013.x