Background: To investigate the frequency of glomerulopathies in pregnancy and the influence of maternal glomerulopathies on outcome of gestation. Material and method: Prospective study, with 64 pregnant patients with nephro-urology associated diseases of which 50 had a birth weight recorded. Data were entered by trained clerks and standard definitions for clinical measurements, giving high quality data. Results: 46 pregnant patients with glomerulopathies of which 37 patients had a birth weight recorded. 15 patients with renal failure at various degree. The mean (SD) birth weight of babies born to mothers with before 38 weeks' gestation was 1675 g) and there were 2766g after 38 weeks' gestation. The mean (SD) The birth weight of babies being delivered by mothers glomerulopathies was lower significantly compared with no glomerulopathies mothers (1789.2 + or - 800.3 g vs 3075.0 + or - 298.6 p 0.05). Conclusions: Frequency of glomerulopathies in pregnancy was high, the duration of gestation in maternal glomerulopathies was shortened. The birth weight of babies being delivered by mothers glomerulopathy was low.