We heraby report 10 cases of cardiac arrest associated with general anesthesia at Chungnam Medical Center during the period of Jan. 1967 through June 1972 as follows. (1) Among 10 cases, 3 cases recovered without complications and 7 cases expired. (2) Two pediatric patients showed remarkable recovery with treatment. (3) The expired 7 cases had been in very poor physical condition and recovery from cardiac arrest was delayed. The cause of death in one case was presumed to be air embolism.