Abstract
61 patients were studied with the renography and urography during puerperium ten years ago and now again. The technique and analyses were identical. The results showed that some of these parameters (SV, K, and T 1/2) were either decreased or prolonged more than ten per cent during this period in nearly all cases. However, these changes occurred in both the normal and complicated groups without any correlation with the original diagnosis from the first study. Hypertension has developed in 10 per cent of the toxemic group.