Korean J Anesthesiol.  2017 Apr;70(2):203-208. 10.4097/kjae.2017.70.2.203.

Reversal with sugammadex for rocuronium-induced deep neuromuscular block after pretreatment of magnesium sulfate in rabbits

• Kang WS
• Kim KS
• Song SM

• KMID: 2377422
• DOI: http://doi.org/10.4097/kjae.2017.70.2.203

Abstract

BACKGROUND
Magnesium sulfate (MgSO4) has been used in the treatment of pre-eclampsia, hypertension and arrhythmia. Magnesium enhances the neuromuscular block of rocuronium. This study has been conducted to evaluate the reversal efficacy of sugammadex from deep rocuronium-induced neuromuscular block (NMB) during consistent pretreatment of MgSOâ‚„ in rabbits.
METHODS
Twenty-eight rabbits were randomly assigned to four groups, a control group or study groups (50% MgSOâ‚„ 150-200 mg/kg and 25 mg/kg/h IV), and received rocuronium 0.6 mg/kg. When post-tetanic count 1-2 appeared, sugammadex 2, 4, and 8 mg/kg was administered in the 2-mg group, control and 4-mg group, and 8-mg group, respectively. The recovery course after reversal of sugammadex administration was evaluated in each group.
RESULTS
The mean serum concentration of magnesium was maintained at more than 2 mmol/L in the study groups, and the total dose of MgSOâ‚„ was more than 590 mg. The reversal effect of sugammadex on rocuronium-induced NMB in pretreated MgSOâ‚„ was not different from that in the group without MgSOâ‚„. The recovery time to train-of-four ratio 0.9 after sugammadex administration in the 2-mg group was longer than in the other groups (P < 0.001); there were no other significant differences among the groups.
CONCLUSIONS
The reversal of sugammadex from a deep rocuronium-induced NMB during large pretreatment of MgSOâ‚„ was not affected. However, we should consider that the reversal effect of sugammadex varied depending on the dose.

Keyword

Magnesium sulfate; Pharmacodynamics; Rabbits; Rocuronium; Sugammadex

MeSH Terms

Arrhythmias, Cardiac
Control Groups
Hypertension
Magnesium Sulfate*
Magnesium*
Neuromuscular Blockade*
Pre-Eclampsia
Rabbits*
Magnesium
Magnesium Sulfate