Der Anaesthesist
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The clinical and laboratory findings in 4 children with signs of malignant hyperthermia are reported. In all cases an extraordinary elevation of creatine kinase activity in serum was observed. ⋯ In contrast to other reports, creatine kinase BB derived from brain was found to be absent in all cases, although creatine kinase MM and MB showed remarkable alterations. A certificate for all patients who have survived malignant hyperthermia is suggested.