CDI

Data Samples

Data samples of the various modalities used to monitor patients:

EMG     SSEP     EEG     MEP     CMP     BAEP

 

Below is an example of spontaneous EMG of the left and right recurrent laryngeal nerve being monitored during a thyroidectomy.

Click Image for Enlargement

 

Shown below is SEP data of the median nerve (MSP) observed during a carotid endarterectomy. Changes can be seen in the responses from the left median nerve at the time of clamping of the common carotid artery.

Click Image for Enlargement

 

An example of filtered EEG (left) and spectral EEG (right) during a carotid endarterectomy is pictured here.  A decrease in cortical activity in the left hemisphere occured when the left common carotid artery was clamped during the procedure.

    EEG changes from CEA

Click Images for Enlargement

 

Below is sample data of MEP collected during a craniotomy (left) and a shoulder arthroplasty (right) where the motor cortex is stimulated and potentials are recorded from muscle groups.

MEP UE/LE    MEP shoulder

Click Images for Enlargement

 

Below is a sample of CMP data from a posterior lumbar fusion.  As the pedicle screws are stimulated, evoked responses are obtained in several lower extremity muscle groups.

Click Image for Enlargement

 

This is an example of data collected from a BAEP test monitoring CN VIII, during a retromastoid craniotomy for microvascular decompression of the trigeminal nerve.

BAEP

Click Image for Enlargement

 

Return to IOM Procedures

Return to Services