[Ketamine in the induction of neuroleptoanesthesia]

The technique of ketamine-introduced neuroleptanaesthesia has been modified by altering the order of application of the drugs, and the following changes in the circulatory parameters are analyzed. In contrast data in the literature claiming that the direction of circulatory changes is a function of age, the correlation with the circulating blood volume is pointed out. The method has the advantage of shorting the time needed for the introduction of anaesthesia and of facilitating the detection and timely replacement of any eventual volume deficiency.