Nerve Monitor
Facial Nerve Monitor · Nerve Integrity Monitor · Nim · Intraoperative Nerve Monitor · EMG Nerve Monitor · Nerve Stimulator
A console with a touch screen and a loudspeaker, linked to a patient interface box. Needle electrodes go into the muscles the nerve supplies, and a sterile handheld stimulator probe connects to it from the field.
On the table
What it does, the lengths it comes in and what experienced techs know about it.
What it’s for
Watches a nerve the surgeon must protect, most often the facial nerveFAY-shul NERVThe seventh cranial nerve, which moves the muscles of the face and carries taste from the front of the tongue.Full entry in ear, mastoid, parotid and skull base surgery. It sounds an alert when the nerve is pulled or touched, and the stimulator probe lets the surgeon find and map the nerve and confirm it before cutting near it.
Lengths and variants
Two-channel setups for the facial nerveFAY-shul NERVThe seventh cranial nerve, which moves the muscles of the face and carries taste from the front of the tongue.Full entry (eye and mouth muscles), and four or more channels for other cranial nerveKRAY-nee-ul NERVOne of the 12 pairs of nerves that come straight from the brain and brainstem rather than the spinal cord.Full entry . Monopolar and bipolarby-POH-lerHaving two poles or two opposite ends; most often used as a short form of bipolar disorder.bi- twopolar having polesFull entry stimulator probes, and stimulating dissectors shaped like ear instruments.
What experienced techs know
What techs who reach for it every day know about it.Pro
Through the case
In the order you meet it: before, during and after the case.
- During the case
Caution
What not to do with it, and why.Pro
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On 9 setups
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4 sources
- Flint PW, et al. Cummings Otolaryngology Head and Neck Surgery. 6th ed. Chapter 169, p. 2612 (Facial Nerve Monitoring)
- Chapter 178 (Intraoperative Monitoring of Cranial Nerves in Neurotologic Surgery)
- Rothrock JC. Alexander's Care of the Patient in Surgery. 17th ed. p. 651
- somatechnology.com
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