Anaesthesie-Abteilung des Allgemeinen Krankenhauses Altona in Hamburg Self-Inflicted Complications in Intensive TherapySummary. Typical complications in intensive care may result from technical causes, human failure, and complication of a serious basic disease, as well as from the actual intensive treatment. Allergic reactions, toxic organic lesion and diarrhea can be induced by bacterial infection after prolonged intubation, tracheostomy, long-term artificial respiration, treatment with aerosols, venous and bladder catheters and wide-spectrum antibiotics. Parenteral nutrition may lead up to hypertonic and hypotonic hyperhydratation, fluid overloading, septicemia and insufficient caloric supply. Hypocalemia and metabolic alkalosis are other severe complications. After massive transfusions the risk of impaired metabolism and coagulation, and even of the occurrence of hepatitis exists. Aggressive polypragmasy can cause a psychotic syndrome and in some cases even delirium.