Multiple anomalies, hypokalaemic paralysis and partial symptomatic relief by terbutaline.

In this paper a follow-up is presented of a case report initially described by Andersen in 1971. The patient presented with a syndrome including elements of familial periodic paralysis with hypokalaemia, long QT syndrome, ventricular ectopy, myopathy with fibre-type disproportion and dysmorphic features resembling Treacher Collins' syndrome. The main symptom was hypokalaemic paralysis. The episodes were accompanied by a lowered intracellular potassium content and an increase in intracellular sodium. Treatment with terbutaline, a Na/K-ATPase-stimulating drug, resulted in attack-free periods of approximately 9 months, after which the attacks reoccurred. The patient suffered severe attacks whenever treatment with terbutaline was stopped. The patient experienced two attacks of respiratory arrest, the second being fatal.