[Anaesthesia and vasomotor tone during CPB: intravenous anaesthetics].

Anaesthesia during CBP is frequently provided using intravenous anaesthetic drugs, particularly propofol. The effects of the different drugs have been studied during CPB. These drugs have an arterial and venous vasodilator effect during CPB which is dose dependent and is more pronounced for propofol. High doses of propofol or thiopental reduce cerebral blood flow but provide no additional neurological protection.