Intraoperative Neuromonitoring for Spinal Surgery in a Pregnant Patient: Case Report and Literature Review

We report the strategy of anesthesia and intraoperative neurophysiological monitoring (IONM) in a 29-year-old, 22 weeks pregnant patient posted for surgery for aggressive vertebral body hemangioma. We used propofol and fentanyl-based anesthesia for IONM. Motor-evoked potentials (MEP) and somatosensory-evoked potentials (SSEP) were used to monitor the neural tracts during surgery. Fetal heart rate monitoring was done preoperatively and postoperatively. Train of 8, 75 μs duration pulse, 250–500 Hz stimulus was used for MEP and 30 mA, 200–400 μs, 3–5 Hz was used for SSEP. No new motor or somatosensory deficits appeared. Our findings suggest that IONM can be safely done in pregnant women.

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