Key result
Dexmedetomidine administration during propofol/alfentanil anesthesia decreased the T1 response from 51% to 44% (P<0.0001) and increased plasma rocuronium concentrations.
Why the study?
Does dexmedetomidine alter rocuronium-induced neuromuscular block and hemodynamics in human volunteers?
Population
10 human volunteers undergoing propofol/alfentanil anesthesia with rocuronium infusion
Comparison
Dexmedetomidine administered by… vs Pre-dexmedetomidine baseline values
Follow-up
45 minutes
Authors
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Unlikely clinically significant despite PK changes; leaves open need for confirmation in larger anesthesia trials.
Does dexmedetomidine alter rocuronium-induced neuromuscular block and hemodynamics in human volunteers?
Absolute Event Rate: 44% vs 51%
p-value: p=<0.0001
Dexmedetomidine-induced vasoconstriction may alter the pharmacokinetics of rocuronium, though these effects are unlikely to be clinically significant.
Talke et al. (1999) studied Healthy volunteers undergoing anesthesia (n=10). Dexmedetomidine vs. Pre-dexmedetomidine values was evaluated on T1 response (first response in train-of-four sequence) (p=<0.0001). Dexmedetomidine administration during propofol/alfentanil anesthesia decreased the T1 response from 51% to 44% (P<0.0001) and increased plasma rocuronium concentrations.
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