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The authors report three cases of psychotic complications of cardiac surgery. A review is made from literature and an inventory of psychological and organic factors implicated in this pathology. These complications are still frequent (up to 50% for Braceland, and 70% for Rabiner and al.). For Blacher there is an almost universal "psychosis" in by-pass surgery and frequent "hidden psychosis" (they are ignored and denied both by the staff and the patient). They are caused by the emotional stress, intensive care unit syndrome, or personal vulnerability. The symbolism of the heart and the personality of the cardiac patient are also in cause. Neurologic accidents, hypoxy, embolisms, are now less frequent. The collaboration of a psychiatrist with the cardiologic staff is mandatory. With this collaboration not only psychiatric complications but also somatic morbidity and mortality would be reduced.