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| Name | Class |
|---|---|
| Bahteem Specialized Hospital | OTHER |
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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
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Magnesium sulphate | Active Comparator | Group M |
|
| Na CL 0.9% | Placebo Comparator | group C |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Magnesium sulphate | Drug | Before induction of anesthesia; children in group M received an iv bolus dose of magnesium sulfate (Magnesium sulfate ampoule 1 gm/10 ml, Eipico, Egypt) 40 mg Kg-1 over 5 minutes followed by 15 mg Kg-1 h-1 ivi until the start of skin closure. |
| Measure | Description | Time Frame |
|---|---|---|
| Quality of surgical field | using Fromme's-Boezaart scale (0 to 5). A score of ≤ 2 was considered to be optimal | at the end of the surgey |
| Measure | Description | Time Frame |
|---|---|---|
| The operative time | Minutes | Intraoperative |
| The anesthesia time. | Minutes | Intraoperative |
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Inclusion Criteria:
Exclusion Criteria:
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| ID | Term |
|---|---|
| D008278 | Magnesium Sulfate |
| ID | Term |
|---|---|
| D017616 | Magnesium Compounds |
| D007287 | Inorganic Chemicals |
| D013431 | Sulfates |
| D013464 | Sulfuric Acids |
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| Na CL 0.9% | Other | Before induction of anesthesia; children in group C equivalent volumes of Na Cl 0.9% over the same period instead of magnesium sulphate. |
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| ESRT responses | the surgeon assessed ESRT response at the basal, middle, and apical areas of the electrode array by visual monitoring of the stapedius muscle using direct microscopic examination | After insertion of the electrode and after reversal of any residual muscle relaxant (TOF response > 0.9), |
| Heart rate | beats per minute | baseline, after surgical incision, Hypotensive period, after LMA removal and at recovery room admission. |
| Mean arterial blood pressure | mm Hg | Intraoperative |
| Anesthetic consumption | propofol and fentanyl requirement after the bolus | Intraoperative |
| D013456 |
| Sulfur Acids |
| D013457 | Sulfur Compounds |