The goals of this study are to use a questionnaire survey to determine the state of awareness of the diagnosis and management of patients with urinary tract dilation across several medical professionals, to predict the severity of the postnatal course and surgical intervention in fetuses with urinary tract dilation detected during pregnancy, and to create a model of prenatal and postnatal care for patients with dilation of the urinary tract for multidisciplinary use.

Currently, in Slovakia, a multidisciplinary standard of health care for patients with dilation of the urinary tract is not present. Prenatal diagnosis of anomalies of the urinary system includes the entire spectrum of anomalies, genetic diseases or anatomical deviations, which have a non-uniform classification and different terminology in a wide range of literature. Therefore, prenatal diagnosis of these anomalies, as well as dilation diseases of the urinary tract, in different centers is different, often subjective and outdated. However, some findings on the urinary tract, even with regard to the sex of the fetus, require great attention, defining the degree of severity and precisely targeted management, the task of which is to prevent serious complications in postnatal life. Dilative diseases of the urinary tract may not be clinically obvious after birth, but in the long term, if they are not detected, serious and irreversible kidney damage may occur. The goals of this study are therefore 1. to confuse the current situation in the multidisciplinary medical sector regarding the issue of dilations of the urinary tract; 2. in the conducted study to identify fetuses with such a degree of dilation of the urinary tract (according to the UTD classification from 2014) that requires stricter management in the prenatal and postnatal period and which are at high risk of surgical intervention postnatally and 3. subsequently create a model of health care for multidisciplinary cooperation for a patient with dilation of the urinary tract.

Inclusion criteria:

• Singleton pregnant women whose fetuses were diagnosed with dilation of the urinary tract as an isolated US finding before the 28th week of pregnancy. Fetal patients with subsequent US control in the third trimester after the 28th week of pregnancy.
• Newborns and children with prenatally diagnosed UTD, which, depending on the severity, required a postnatal examination by a pediatric nephrologist within a month after birth and then in his follow-up up to 6 months after birth.

Exclusion criteria:

• Multiple pregnancies
• Urinary tract dilation in fetuses diagnosed in the third trimester
• Associated anomalies in fetuses
• Aneuploidy
• Newborns and children monitored by someone other than a selected pediatric nephrologist Patients who were lost from follow-up

fertility period of women

Singleton pregnant women whose fetuses were diagnosed with dilatation of the urinary tract as an isolated finding before the 28th week of pregnancy. Dilatation of the urinary tract was categorized according to the 2014 UTD classification system.

Newborns and children with prenatally diagnosed UTD, which, depending on the severity, required a postnatal check-up by a pediatric nephrologist within a month after birth and then in his follow-up up to 6 months after birth.

Data from ultrasound examination of fetusus will be share with other specialist from pediatric nephrology

After examination of fetuses in second trimester of pregnancy and 6 months after birth of child