Diazepam prevents some adverse effects of succinylcholine.
Neuromuscular, circulatory, and adverse effects of intravenous succinylcholine (SCh), mg/kg, were compared in 3 groups of 40 patients each. Group I served as control; group II received diazepam, 0.05 mg/kg, 5 min before SCh; and group III was given d-tubocurarine (d-Tc), 0.05 mg/kg, for pretreatment. Diazepam pretreatment prevented muscle fasciculations, increases in serum potassium (K+) and creatinine phosphokinase (CPK) levels, increased heart rate and arterial pressure, and postoperative myalgia associated with SCh administration. The neuromuscular blocking action of SCh was not affected. Pretreatment with d-Tc did not abolish increases in serum K+ and CPK levels, was associated with a higher incidence of postoperative myalgia, and decreased the onset and magnitude of SCh-induced muscle paralysis. Our data demonstrate that diazepam, a predominant centrally acting muscle relaxant, is more effective than d-Tc in preventing the adverse effects of SCh, a peripherally acting muscle relaxant.[1]References
- Diazepam prevents some adverse effects of succinylcholine. Fahmy, N.R., Malek, N.S., Lappas, D.G. Clin. Pharmacol. Ther. (1979) [Pubmed]
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