[Isotope nephrography in the 2d half of pregnancy]

166 Women were investigated after 26 weeks of pregnancy, divided into 4 groups (normal pregnancy, after urinary tract infection, with cystopyelitis and with toxemia). Renography is a very sensitive method. Only 6,6% women had bilateraly normal function. Unilateral pathology was detected more often on the right side (17,6% versus 2,9%) and the damage was on the right side also more intensive (30% versus 8%), and present as early as in the 7. to 8. month of pregnancy. The damage of the secretion phase of the renogram in pregnancy is mostly sequal of the disturbed drainage following compression of the ureter trough varicosal veins and the pregnant uterus.