Special Considerations and Contraindications in Medicine

What is not a consideration for TcMEPs?

Diabetes

Which are contraindications of MEPs?

Neurostimulator, anuerysm clip, cochlear implants

Which element in patient history may cause SEP stimulation to fail?

Peripheral neuropathy

A selective dorsal rhizotomy is associated with what?

Cerebal palsy and severing of posterior rootlets

When monitoring C6-C7 ACDF and patient has amputated left wrist, where should you stimulate?

Ulnar notch

Surgical site for posterior fossa tumor surgery requires adjustment of the standard SSEP recording electrodes. Which adjustments should be made?

Move C5S lateral

What modality has a contraindication when patient has a cochlear implant?

TcMEPs

Seizures is a contraindication to what modality?

TcMEPs

MRI reports tethering of spinal cord caudal to the conus medullaris. What is affected?

Loss of unilateral vastus TcMEPs

Patient history of diabetes affects what?

Peripheral neuropathy leading to poor SSEP signals

Due to the relative inexcitability of the motor cortex in the pediatric population, direct cortical stimulation may not be suitable in patients less than

5 years old.

Triceps and extensor carpi ulnaris muscles can be good locations to monitor EMG when the surgery is close to

C7