Urethral catheter knotting in preterm neonates.

A 28-week preterm baby was admitted to our neonatal intensive care unit (NICU). Due to surfactant deficiency lung disease, he was given surfactant and ventilated. He developed urinary retention and hence was catheterized with a size 4F feeding tube. When his clinical condition improved, it was decided to remove the catheter. While it was being removed, resistance was felt halfway through the procedure. When the catheter tip was out, we were shocked to see a knot in the catheter (Fig. 1). Fresh bleeding was noticed at the urethral meatus, which stopped with gentle pressure. His urine output has been adequate since then.