[Position of patient-relevance to isotope nephrography in second half of pregnancy (author's transl)].

Diagnostic isotope nephrography of 63 women in the second half of pregnancy is reported in this paper. Positioning was changed for control checks, and major deviations were found to occur to the ING curve with patients in lateral position. There was, above all, an improvement in the excretion phase on the relieved side. Less variation was recorded from the secretion phase. Those findings should be taken into due consideration, particularly for diagnosis of ureter obstructions in advanced pregnancy. Lateral positioning is recommended for the above reasons also in cases of late gestosis, gestational cystopyelitis, and suspicion of intra-uterine retardation of foetal growth. Lateral positioning proved to be superior to genupectoral positioning. -- The above findings appear to provide additional evidence in support of a hypothetic proposition according to which mechanical factors are of sizeable importance to the genesis of urinary retention in advanced pregnancy. Therefore, no publication should be made without data on patient positioning.