IOM – Intraoperative Monitoring
Intraoperative monitoring (IOM) – also called Intraoperative Neuro Monitoring (IONM) – refers to the use of electrophysiological monitoring methods, such as EEG,EMG and EP to monitor certain neural structures of the central and peripheral nervous system during surgery. This type of monitoring reduces the risk of iatrogenic damage to the patient’s nervous system by providing ongoing information to the surgeon and anesthesiologist.
During IOM, a member of the surgical team trained in neurophysiology obtains and co-interprets triggered and spontaneous electrophysiologic signals from the patient. The signals received change depending on factors, such as anesthesia, tissue temperature, surgical stage and tissue stress. If any risk to the nervous system is detected, corrective measures can be taken immediately.
IOM is typically carried out by spine surgeons. However, neurosurgeons, vascular, orthopedic, otolaryngologists and urology surgeons also make use of it.