Electronic Fetal Monitoring
▪Normal 110-160 bpm
▪Bradycardia <110 bpm
▪Tachycardia >160 bpm
▪Must be majority during 20 min
Variability
Measured in bpm around baseline (avg over 10 min)
Absent = 0
Minimal = <5bpm around baseline
Moderate = 5-25bpm
Marked = >25
Accelerations
Sign of gross fetal mvmt
Increase in baseline heart rate, at least 15 bpm x 15 sec
–10 bpm x 10 sec if <32 weeks EGA
Decelerations
earl decel = head compression
Variable Decel = cord compression
Late Decel = utero-placental insufficiency
- onset to nadir >30s from peak of contraction
Prolonged decel = duraion >2min
BPP (biophysical profile)
NST (Non Stress Test)
Indications:
Antepartum Fetal Surveillance
Reactive (Resassuring)
- 20 min