[Relative parathyroid insufficiency in hypomagnesemia].

In patients with normocalcaemic tetany and hyperventilation syndrome (functional breathing syndrome), respectively, the parathyroid function was studied by means of the EDTA test according to Kaiser and Ponsold. In agreement with experimental results on inhibition of the parathyroid hormone release in magnesium deficiency patients with low serum magnesium concentrations show a pathological EDTA test signalling a relative parathyroid insufficiency.