PMID: 842267Jan 1, 1977Paper

The relationship between disposition and duration of action of congeneric series of steroidal neuromuscular blocking agents

Acta Anaesthesiologica Scandinavica
S AgostonA H Scaf


The renal and hepatic elimination and biotransformation, as well as the relation between disposition and duration of action of pancuronium and two of its analogues, dacuronium and ORG.6368, have been investigated in the cat. In pharmacokinetic studies, appreciable amounts of the latter two compounds were found in the urine, bile and liver 8 h after their intravenous administration. Various proportions of the injected dose of the respective drugs were metabolized. In another series of experiments it was shown that the early hepatic uptake (during the first 3 min after the injection) of ORG.6368 was significantly greater than that of dacuronium and pancuronium. The intensity and duration of action of the neuromuscular blocking effect of the three compounds were studied after intravenous and "close" intraarterial injection. On the basis of these pharmacokinetic and neuromuscular studies, it was concluded that the short duration of action of ORG.6368 is due primarily to its early hepatic uptake. The possibility cannot be excluded, however, that differences in the kinetics of the drug action of ORG.6368 and the other two compounds also contributed significantly to the differences seen in the duration of action of these compounds.


Jan 1, 1975·International Anesthesiology Clinics·F F Foldes
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Oct 23, 2013·PloS One·Zhen-Meng WangWei-Feng Yu
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