20
Oper
ation
TOCO transducer
•
Position the TOCO transducer over the fundus of the uterus (refer to the
Fetal Monitor instructions for use for further application information), and
fasten it securely.
•
Allow the system to stabilise for 20-30 seconds while communication is fully
established with the fetal monitor.
•
Adjust the TOCO baseline using the toco zero button on the Fetal Monitor,
once the system has stabilised.
•
After any drop-out in the wireless link, it will be necessary to re-zero the
toco channel when communication is re-established. Allow the system to
stabilise as above before re-zeroing.
Note: The TOCO-transducer transmits its signals to the US-transducer. The
distance between them should not exceed 30cm. If this range is exceeded, toco
data will be lost. When it comes back in range, the stabilisation period & re-
zeroing as detailed above will need to be repeated.
False recording of FHR
When monitoring FHR using Doppler ultrasound, the heart
rate may be falsely reported. This can be caused by a number
of effects including double-rating or half rating, and is
characteristic of ultrasound fetal monitoring. Another cause may
be detection of maternal signals, (particularly in the absence of
fetal signals). Doubling of the maternal rate can result in a trace
looking very like a normal fetal trace. For further information on
this, refer to the Fetal Monitor instructions for use.
If the fetal heart signal has large variations in rate, is weak, or is in the presence
of large maternal signals, noise or artefact, it is possible for the system to
double count or half rate for short periods of time. This is characteristic of
monitoring fetal heart rates with ultrasound.
To minimise the chances of double rating, half rating or other
types of artefact occurring, always palpate the abdomen and
listen to the fetal heart with a hand-held Doppler unit before
applying the ultrasound transducers. This helps to verify the
fetal heart and to locate the area where best signal quality can
be expected. For further information on this refer to the Fetal
Monitor instructions for use.
Summary of Contents for SONICAID FREEDOM SF1-EUR
Page 1: ...SF1 EUR...
