CFM ( Cerebral Function Monitoring ) electrodes - Use of

Publication: 28/07/2015  --
Last review: 28/06/2018  
Next review: 28/06/2021  
Standard Operating Procedure
ID: 4279 
Approved By: Neonatal Governance Committee 
Copyright© Leeds Teaching Hospitals NHS Trust 2018  


This Standard Operating Procedure is intended for use by healthcare professionals within Leeds unless otherwise stated.
For healthcare professionals in other trusts, please ensure that you consult relevant local and national guidance.

Use of CFM (Cerebral Function Monitoring) electrode


  • To standardise and optimise the insertion and management of electrodes for continuous cerebral function monitoring (CFM) on the neonatal unit.

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Background and indications for standard operating procedure/protocol

CFM is used routinely in the management of neonates undergoing therapeutic hypothermia and those newborn babies suspected of having seizures.

Standardised insertion, fixation and management of the electrodes is essential in obtaining meaningful data.

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Procedure method (step by step)

There is no need to shave the infant’s head prior to electrode placement.
The neutral electrode should be placed subdermally just anterior to the fontanelle.
Position electrodes so the wire trails away from the infant’s face. This not only looks better than having wires all over the place but means they can be tidied away under a hat and are less likely to be dislodged.
Secure electrode with the SLE collodion provided just at the point of insertion.
Alternatively it is also appropriate to use micropore tape.
Only use a VERY small amount of collodion otherwise the electrodes are impossible to remove. The more you apply the less secure the electrode becomes.

The finished look with neutral electrode anterior to the fontanelle and the other two placed in the parietal area equidistant apart. The colour of the electrodes does not matter! Electrodes should be as superficial as possible in the subcutaneous space.
If collodian glue has been used please use the non-acetone remover provided to remove the electrodes once monitoring is complete.


Record: 4279
Clinical condition:
Target patient group:
Target professional group(s): Secondary Care Doctors
Adapted from:

Evidence base

Training manual for the Olympus CFM machine.

Evidence levels:
A. Meta-analyses, randomised controlled trials/systematic reviews of RCTs
B. Robust experimental or observational studies
C. Expert consensus.
D. Leeds consensus. (where no national guidance exists or there is wide disagreement with a level C recommendation or where national guidance documents contradict each other)

Approved By

Neonatal Governance Committee

Document history

LHP version 1.0

Related information

Not supplied

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