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Oper
ation
5.3 Ambulatory 
Monitoring
IMPORTANT: 
Apply the transducers while the patient is standing for  
 
  ambulatory 
monitoring. 
   
 
For ambulatory monitoring of a patient, undock the transducers from the 
receiver and apply them to the patient as described in Section 5.2.
During monitoring take care that:
  - The transducers do not become displaced.
  - A good fetal heart sound is recorded.
  - The patient stays within operating range of the receiver.
Note 
Monitoring while the patient is moving or walking may result in increased 
artefact or drop-out on the trace.  To minimise this, ensure the transducers are 
securely strapped on using good quality belts.  It may be necessary to tighten 
these more than usual to keep the transducers in position.
If the patient moves outside the wireless range, the signal will be lost.  This is 
indicated by the transmission indicators on the receiver fl ickering or turning 
amber.  Note also that within the wireless range, there may be “dead spots” 
where there is no signal due to building construction or interference from other 
sources.
   
 
Other wireless systems working on the same frequency can also interrupt 
ambulatory monitoring. In this case, the system should be set to a different 
frequency. To change the frequency, please refer to Section 8.3.
5.4  Water Birth Monitoring
IMPORTANT: 
Apply the transducers when the patient is in the water  
   
 
for monitoring under water. 
   
 
Use little, or no gel if possible on the US-transducer.
When the transducers are under water, this reduces the range. Positioning the 
receiver in line of sight of the transducers may improve reception. If you are in 
doubt, please contact Huntleigh or your distributor for assistance.