Percutaneous Nephrostomy in the Neonatal Period: Indications, Complications, and Outcome-A Single Centre Experience

Abstract

Purpose: The purpose of this study was to evaluate the indications, technique for percutaneous nephrostomy (PCN) insertion, the complications related to PCN, duration of PCN, and outcome following PCN removal regarding the kidney function.

Material and methods: Medical charts of 31 neonates (22 boys and 9 girls, mean age 13.9 days) treated with 43 PCN were reviewed. Collected data included indications for PCN, PCN complications, duration of PCN, and outcome of these patients by analysing the kidney function.

Results: The indications for PCN insertion were obstructive urinary tract dilation in 24 neonates (four with associated infection), and non-obstructive urinary tract dilation with urosepsis or pyonephrosis in seven cases. Primary technical success of PCN placement using Seldinger technique was 97.7%. The following complications were reported: self-limited post-procedural bleeding into the pelvicalyceal system in two, chronic microscopic haematuria in five, and clinically manifested urinary tract infection in five children. Four PCN were dislocated. Cellulitis was present at the skin entry of 5 PCN, urinary leak in 5 PCN, and mechanical damage of 5 PCN. Eight PCN had to be replaced. Mean duration of PCN was 5 months. Kidney insufficiency was detected in 5/29 children with the mean follow-up of 3.9 years.

Conclusions: PCN is a safe, effective transient solution in neonates with pyonephrosis or when surgery of obstructed urinary system has to be postponed. The rate of minor complications increased with PCN duration. If kidney insufficiency is present after PCN removal, it is related to the complexity of kidney anomalies.

Keywords: Complications; Neonate; Outcome; Percutaneous nephrostomy; Pyonephrosis; Urinary tract obstruction.