[Cardiac arrest with syndrome of apparent mineralocorticoid excess].

Ventricular fibrillation is an unknown complication to the syndrome of apparent mineralocorticoid excess (SAME). This case report describes a young woman admitted with hypo-kalaemia and hypertension. Concentrations of both P-renin and P-aldosterone were low and urinary steroid metabolites revealed an abnormal excretion pattern pointing to the diagnosis of SAME. Three years later the woman suffered from ventricular fibrillation due to the hypokalaemia caused by her disease. This case report demonstrates the need for increased attention on the potassium concentration in patients with SAME.