Abstract | BACKGROUND: METHODS: Seventy-two patients undergoing Caesarean section were randomly assigned to receive i.v. saline (control group) or magnesium sulphate 30 mg kg(-1) bolus+10 mg kg(-1) h(-1) continuous infusion (Mg 30 group) or 45 mg kg(-1) bolus+15 mg kg(-1) h(-1) continuous infusion (Mg 45 group) after induction. Bispectral index (BIS) value, mean arterial pressure (MAP), and midazolam, fentanyl, and atracurium consumptions were recorded. RESULTS: BIS values [mean (sd)] at 7.5 and 10 min after surgery and before delivery in the control [64 (9), 66 (8), 67 (8), P<0.001] and the Mg 30 groups [62 (8), P<0.01; 64 (7), 63 (9), P<0.001] were higher than in the Mg 45 group [56 (8), 55 (8), 55 (7)]. MAP was greater in the control group (P<0.05) than in the Mg 30 and Mg 45 groups during the pre-delivery period. The magnesium groups required less midazolam (P<0.05), fentanyl (Mg 30, P<0.05; Mg 45, P<0.01), and atracurium (P<0.001) vs the control group. CONCLUSIONS: Preoperative i.v. magnesium sulphate attenuated BIS and arterial pressure increases during the pre-delivery period. Magnesium sulphate can be recommended as an adjuvant during general anaesthesia for Caesarean section to avoid perioperative awareness and pressor response resulting from inadequate anaesthesia, analgesia, or both.
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Authors | D H Lee, I C Kwon |
Journal | British journal of anaesthesia
(Br J Anaesth)
Vol. 103
Issue 6
Pg. 861-6
(Dec 2009)
ISSN: 1471-6771 [Electronic] England |
PMID | 19783538
(Publication Type: Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
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Chemical References |
- Adjuvants, Anesthesia
- Analgesics, Opioid
- Hypnotics and Sedatives
- Neuromuscular Nondepolarizing Agents
- Atracurium
- Magnesium Sulfate
- Midazolam
- Fentanyl
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Topics |
- Adjuvants, Anesthesia
(pharmacology)
- Adult
- Analgesics, Opioid
(administration & dosage)
- Anesthesia, General
(methods)
- Anesthesia, Obstetrical
(methods)
- Atracurium
(administration & dosage)
- Blood Pressure
(drug effects)
- Cesarean Section
- Double-Blind Method
- Drug Administration Schedule
- Electroencephalography
(drug effects)
- Female
- Fentanyl
(administration & dosage)
- Humans
- Hypnotics and Sedatives
(administration & dosage)
- Magnesium Sulfate
(pharmacology)
- Midazolam
(administration & dosage)
- Monitoring, Intraoperative
(methods)
- Neuromuscular Nondepolarizing Agents
(administration & dosage)
- Pregnancy
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