Fetal and maternal diurnal rhythms during the third trimester of normal pregnancy: Outcomes of computerized analysis of continuous twenty-four—hour fetal heart rate …

S Lunshof, K Boer, H Wolf, G van Hoffen… - American journal of …, 1998 - Elsevier
Objective: We quantified the presence of diurnal rhythms in various computerized fetal heart
rate parameters in normal pregnancies to assess their clinical relevance. Study Design:
Modified cosine analysis was applied to the outcomes of computerized analysis of
continuous 24-hour fetal heart rate recordings in 26 normal pregnancies,. Diurnal rhythms in
maternal heart rate and plasma hormones were assessed in 15 and 17 pregnancies,
respectively. Correlations between maternal and fetal rhythms were calculated. Results: A …