Randomized and Placebo Controlled Study to Evaluate the Effect of Magnesium Sulfate on Intraoperative Neuromonitoring.
Loma Linda University
Summary
Magnesium Sulfate(MgSo4) is increasingly being used as part of the multimodal pain regimen in the perioperative period. The intraoperative neurophysiological monitoring (IONM) is utilized in complex spine and cranial surgeries to assess the functional integrity of the neural pathways. The effect of Magnesium sulfate on IONM has not been studied. This is a prospective, double blind, randomized placebo controlled trial to study the effect of Magnesium sulfate bolus on the amplitude and latency of somatosensory(SSEPs) and motor evoked potentials(MEPs) in patients undergoing surgery requiring IONM.
Description
The primary objective of this study is to investigate the effect of magnesium sulfate on the amplitude of the SSEP with tibial nerve stimulation. Secondary objectives are to study the effect of magnesium sulfate on the latency of SSEPs and the amplitude of MEPs in patients undergoing spine and/or cranial surgery requiring intraoperative neuromonitoring. Background: Magnesium Sulfate is increasingly being used as part of the multimodal pain regimen in the perioperative period. The efficacy of intravenous (IV) magnesium sulfate in reducing the postoperative pain scores and/or postoperative opio…
Eligibility
- Age range
- 18–80 years
- Sex
- All
- Healthy volunteers
- No
Inclusion Criteria. * Patients aged 18 to 80 years * Belonging to American Society of Anesthesiologists physical status (ASA) I, II * Undergoing elective spine or cranial surgery where intraoperative neuromonitoring including short latency somatosensory evoked potentials (SSEP or SEP) and transcranial electrical muscle motor evoked potentials recording from muscles (TceMEP or TcMEP or mMEP or MEP) is planned. Exclusion Criteria: * Magnesium use within the last 2 days, either intravenous or oral supplements. * Patients with known electrolyte imbalances (Sodium \<135 or \>145 mmol/L OR Potass…
Interventions
- DrugMagnesium sulfate
Effect of 40mg/kg Magnesium sulfate bolus dosed to ideal body weight on intraoperative neuromonitoring
- DrugNormal Saline
20 ml of normal saline bolus will be administered to the control group over 10 mins.
Location
- Loma linda University Medical CenterLoma Linda, California