[Electrodiagnostical investigations during pregnancy, labour, puerperium, and in impending early delivery (author's transl)].

Electrodiagnostical investigations measuring the Rheobase and the Chronaxy have been carried out on 100 women, 36 during pregnancy, 21 during labour, 29 in puerperium and 14 with impending early delivery. As the results show, the rheobase values, which were determined during pregnancy, were significantly much higher, than those during labour or impending early delivery. The rheobase values were significantly lower during 19th--30th week of pregnancy than during 30--40th week, and the latter were significantly much higher, than those during labour or impending early delivery. In puerperium there was no significant difference of the rheobase values to those during labour, but a significant difference to the values obtained during pregnancy. The chronaxy values show no significant differences during pregnancy and labour and during pregnancy and impending early delivery. Only the chronaxy values in puerperium were significantly lower than in pregnancy as well as in labour.