Role of Magnesium in Pediatric Cochlear Implant

Combination of Magnesium Sulphate With Total Intravenous Anesthesia Optimized Surgical Field in Pediatric Cochlear Implant Surgery

To determine the efficiency of addition of magnesium sulfate to total intravenous anesthesia (TIVA) in optimizing the surgical field during pediatric cochlear implant surgery. Also its effects on the intraoperative evoked stapedial reflex thresholds (ESRT) and the intraoperative anesthetic requirements were evaluated.

Sixty-six ASA I and II children (1-6 years) undergoing cochlear implantation under general anesthesia were enrolled in this double blind, randomized study. Children were randomly allocated into two equal groups. Children in Group M (magnesium sulphate group) received an iv bolus dose of magnesium sulfate 40 mg Kg-1 over 5 minutes before induction of anesthesia followed by 15mg Kg-1 h-1 infusion until the start of skin closure. Children in Group C (Control group) received equivalent volumes of isotonic saline solution over the same period instead of magnesium sulphate. Haemodynamic variables, quality of surgical field, ESRT and the intraoperative anesthetic requirements were recorded

Inclusion Criteria:

• ASA I and II children

Exclusion Criteria:

• uncontrolled hypertension,
• diabetes mellitus,
• liver disease,
• kidney disease,
• heart disease,
• allergy to magnesium sulphate,