Anesthesia using high doses of fentanyl in cardiac surgery

: The authors describe their own experience with anaesthesia using large doses of fentanyl in patients operated on account of ischaemic heart disease and acquired valvular defects. Considerable stability of the circulation and careful monitoring of cardiorespiratory parameters along with aimed influencing of serious deviations is the basis of success of this procedure, which makes it possible to perform cardiosurgery in high risk patients. The authors try to improve the described method further by using some modern procedures.