The chronotropic effect of acetylcholine in the presence of vecuronium and atracurium. A study in the isolated perfused rabbit heart.

Bellis, D J; Day, S; Barnes, P K · Anaesthesia · 1990

basic_science · Level V

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Abstract

The bradycardia produced by 1 microgram acetylcholine in the isolated perfused rabbit heart, in the presence of vecuronium and atracurium, was studied and compared with control. Vecuronium at a concentration of 2.5 micrograms/litre and atracurium 6 micrograms/litre did not enhance the negative chronotropic effect of acetylcholine. Atracurium produced a statistically significant inhibition of the negative chronotropic effect of acetylcholine.

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