[Diagnosis of diabetes in pregnancy. Accuracy and prognostic value].

Pregnancy can impair glucose tolerance severely enough to increase the perinatal mortality rate. In the presence of easily recognizable signs pointing to diabetes mellitus we have performed an oral glucose tolerance test. Among 634 patients who were investigated, 151 or 23.8% had impaired glucose tolerance. As there were 11,017 pregnancies in the observation period from January 1976 to May 1981, the detection rate of impaired glucose tolerance was 1.37%. The patients were treated by diet or by diet plus insulin (105 patients). The observed favourable fetal outcome justifies and promotes the proposed diagnostic procedures.