Chapter 7 Fetal Monitoring; Confirming Fetal Life; Monitoring Fhr With Ultrasound - EDAN F9 User Manual

F9, F9 Express Fetal & Maternal Monitor User Manual

Chapter 7 Fetal Monitoring

1 The monitor is not intended for use in intensive care units (ICU), operating rooms or
for home use.
2 Do not apply this monitor during electro-surgery or MRI; otherwise it might result in
harming the patient or the operator.
3 Always check if the alarm settings are appropriate for your patient before starting
monitoring.

7.1 Confirming Fetal Life

Fetal monitoring with ultrasound or DECG cannot differentiate a fetal heart rate signal source
from a maternal heart rate source in all situations. These are some of the signal sources that might
be taken as FHR signal source by mistake:
- High maternal heart rate signal.
- Maternal aorta or other large vessels signals.
- Electrical impulse from the maternal heart transmitted through a recently deceased fetus.
These are some of the signal sources that might be taken as fetal movement signal source by
mistake:
-Movement of the ultrasound transducer.- Movement of the deceased fetus during or
following manual palpation of fetal movement.
- Movement of the deceased fetus during or following maternal movement.
So you need to confirm fetal life by other means before starting to use the fetal monitor, such as
using a fetoscope, stethoscope, Pinard stethoscope or obstetric ultrasonography.

7.2 Monitoring FHR with Ultrasound

The ultrasound monitoring is a method to obtain FHR on maternal abdominal wall. Place a US
transducer (Ultrasound transducer) on maternal abdomen. It transmits low energy ultrasound
wave to the fetal heart, and receives the echo signal. Monitoring FHR using ultrasound is
recommended from the 24th week of gestation.
1 Make sure you have confirmed the fetal life by other means before using this monitor
for FHR monitoring.
2 FHR should not be monitored until a clear fetal heart signal is detected.
WARNING
WARNING
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Fetal Monitoring