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[Urodynamics of the lower urinary tract of the fetus during physiological pregnancy].

To evaluate urodynamic parameters of the fetal lower urinary tracts in physiological pregnancy and without malformations, a monitoring of filling and voiding of fetal urinary bladder was made by the results of ultrasonic study of 76 fetuses at getation term 20-40 weeks. All the infants of the first year of life have undergone clinical examination of urination, 24-h monitoring of spontaneous voiding rhythms, ultrasonic measurements of residual urine. Normal urodynamic parameters of fetal lower urinary tract depending on gestation duration were obtained. These parameters can be used as prognostic criteria in diagnosis of intrauterine urinary disorders.