[The dawn phenomenon in diabetic pregnancy].

The possible development of the dawn phenomenon in three gestational stages was investigated in 9 pregnant women with type I diabetes mellitus and 10 with gestational diabetes. To this end, the overnight intravenous insulin infusion was evaluated with the artificial pancreas (Biostator). In none of the two clinical conditions and in none of the three gestational stages an increased insulin infusions during the second period of the night was found under the experimental conditions of our study. This finding may we related with the timing of the last food intake.