[Oral magnesium therapy in cases of preterm labour (author's transl)].

19 patients with preterm labour received an oral application of 20-30 mval/d Magnesium in addition to the common Fenoterol-Verapamil tocolysis. This therapy showed the following results: 1. augmentation of the Mg2+ serum level from 1.48 to 1.7 mval/l, 2. significant reduction of contraction frequency (p less than 0.005), 3. significant reduction of Fenoterol dose (p less than 0.005), 4. in 14 patients it was possible to change from parenteral to oral therapy.