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Biomedical subjects

H B Van Beem

Publications and source records attributed to H B Van Beem.

2 recordsLinked to original sources

Lack of effects of emulsified propofol ('Diprivan') on vecuronium pharmacodynamics--preliminary results in man.

The possible interaction between vecuronium and propofol or thiopentone has been investigated. Cumulative dose response curves for vecuronium and the pharmacodynamic variables measured were similar with both anaesthetic agents. Patients were intubated following the topical application of lignocaine to the larynx and before the administration of vecuronium. A greater degree of relaxation of the vocal cords was noted in patients anaesthetized with propofol.

Adolescent↗

A pharmacodynamic model for pancuronium.

It has been demonstrated that a simple two-compartment kinetic model may account for the changes in plasma concentration of pancuronium after i.v. administration. However, it can be shown that this simple model does not account satisfactory for the observed changes in muscle twitch response. By the addition of a receptor (biophase) compartment, twitch response can be reconciled with model behavior and the characteristics resemble those predicted by animal studies. The complete model is applied to the problem of total renal failure, and shows that patients with this condition are likely to be marginally resistant to small doses of pancuronium, with a normal rate of recovery. However, larger doses are likely to result in delayed recovery, the duration of effect increasing in a dose-dependent manner.

Adult↗