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Larijani, G.E. et al.

Clinical pharmacology of pipecuronium bromide.

The neuromuscular blocking and cardiovascular effects of pipecuronium, in doses ranging 2-3 times its ED95, were evaluated in 46 patients during thiopental, fentanyl, N2O/O2 anesthesia. The neuromuscular blocking effect of pipecuronium was evaluated by recording of the mechanical twitch of the adductor pollicis muscle in response to stimulation of the ulnar nerve at the wrist. Heart rate, systolic and diastolic blood pressures, and cardiac output were non-invasively measured during the onset of the neuromuscular blockade and compared to a saline control group to separate the effect of anesthesia from those of pipecuronium. The mean +/- SD time from administration of pipecuronium to 90% suppression of the first twitch (T1) of the train-of-four was 2.6 +/- 0.8, 2.0 +/- 0.6, and 2.1 +/- 0.6 min following the 70 micrograms/kg, 85 micrograms/kg, and 100 micrograms/kg dose, respectively. There was no significant difference between the different doses of pipecuronium in the time to 90% suppression of T1. In general, all three doses of pipecuronium provided good to excellent intubating conditions within 3 minutes after its administration. The time from the administration of pipecuronium to 5% recovery of T1 was 52.3 +/- 18.2 min in the group given 70 micrograms/kg. This was significantly longer in patients given 85 micrograms/kg (71.9 +/- 15.7 min) or 100 micrograms/kg (71.8 +/- 22.1 min). Times to the start of recovery of T1 and to 25% recovery of T1 showed a similar significant pattern.(ABSTRACT TRUNCATED AT 250 WORDS)[1]

References

Clinical pharmacology of pipecuronium bromide. Larijani, G.E., Bartkowski, R.R., Azad, S.S., Seltzer, J.L., Weinberger, M.J., Beach, C.A., Goldberg, M.E. Anesth. Analg. (1989) [Pubmed]

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