Diurnal and other variations in fetal movement and heart rate patterns at 20–22 weeks
JIP De Vries, GHA Visser, EJH Mulder… - Early human …, 1987 - Elsevier
It was investigated when diurnal and other variations in fetal movements and in heart rate
pattern emerge during the course of pregnancy. Real-time ultrasound observations were
made at 13 weeks of gestation in 7 nulliparous women and at 20–22 weeks in 10
nulliparous women. The observations took place at 0800, 1300 and 2200 and lasted 60
min/session at 13 weeks and 120 min at 20–22 weeks. The fetal heart rate was recorded for
24 h at 20–22 weeks using electrocardiographic electrodes. No diurnal variations were …
pattern emerge during the course of pregnancy. Real-time ultrasound observations were
made at 13 weeks of gestation in 7 nulliparous women and at 20–22 weeks in 10
nulliparous women. The observations took place at 0800, 1300 and 2200 and lasted 60
min/session at 13 weeks and 120 min at 20–22 weeks. The fetal heart rate was recorded for
24 h at 20–22 weeks using electrocardiographic electrodes. No diurnal variations were …