Catheter for treatment of fetal congenital urinary tract obstruction

Fetal congenital lower urinary tract obstructions affect between 1:250 to 1:1000 pregnancies and are often associated with high perinatal mortality and varying degrees of perinatal and infant morbidity. Affected fetuses have also associated oligo-hydramnios with the development of pulmonary hypoplasia, a scenario almost always associated with perinatal death. For treatment a ’Michael Harrison’ catheter can be inserted for a continuous bladder drainage. This procedure may be associated with maternal and fatal morbidity as the needle for inserting the catheter is unacceptably thick. An aggravating factor is that the fetus himself often pulls out the catheter, leading to repeated implantations. Due to these severe disadvantages, in most cases the disease is not treated at all.

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