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Chapter 6 Pre-Monitoring Preparation
6.1 Confirming Fetal Life
Fetal monitoring with ultrasound cannot differentiate a fetal heart rate signal source from a
maternal heart rate source in all situations. There are some signal sources that might be mistaken
as an FHR signal source as follows:
- High maternal heart rate signal.
- Maternal aorta or other large vessel signals.
- Electrical impulse from the maternal heart transmitted through a recently deceased fetus.
- Movement of the deceased fetus during or following maternal movement.
Confirm fetal life by other methods before starting to use the fetal monitor.
6.2 Switching On
Check that all the metal parts are linked to the protective earth cord and the cord is in
good condition before switching on the monitor.
If any sign of damage is detected, or the monitor displays some error messages, do
not use it on a patient. Contact biomedical engineer in the hospital or the Wallach
service engineer immediately.
Press the POWER switch
lights up and a start-up music will be heard. You can operate the monitor after the main interface
appears.
You can choose to switch the start-up music on or off,
1. Select the setup key
2. Select General > Start-up Music.
3. Select ON (default) or OFF.
4. Select OK.
NOTE:
Check all the functions to make sure that the monitor is in good condition. If the monitor has a
large amount of data saved in its long-term memory, it will take a few seconds to load them after
start-up. When you notice the message "Loading data, please wait...." On the screen, do not
operate the monitor until the main interface appears. A message "Load failed!" indicates that the
data has been damaged and therefore cannot be loaded.
WARNING
on the front panel to switch on the monitor. The power indicator
on the main interface.
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Chapter 6: Pre-Monitoring Preparation
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