Creatine phosphokinase (CPK) levels in pregnancy: a case report and a discussion of the value of CPK levels in the prediction of possible malignant hyperpyrexia.

Creatine phosphokinase (CPK) levels during two consecutive pregnacies of a patient whose sister had died of malignant hyperpyrexia have been investigated. The results are compared with CPK levels of serum obtained from apparently normal people at similar stages of pregnancy. The rise of serum CPK occurring as a result of labour was much more pronounced in the malignant hyperpyrexia suspect.