Risk Factors for Post-Obstructive Diuresis Following Surgical Correction of Ureteropelvic Junction Obstruction in pediatrics: A Retrospective Cross-Sectional Study

jpedsurg.org

Post-obstructive diuresis (POD) is a potentially serious complication following surgical correction of ureteropelvic junction obstruction (UPJO) in pediatric patients. Characterized by excessive urine output after decompression of a chronically obstructed renal system, POD may result in significant fluid and electrolyte imbalance. While physiologic POD is transient, pathologic forms require careful management. This study aimed to determine clinical and demographic risk factors associated with POD following UPJO surgery in a pediatric population.

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Article · Oct 2025 · 1 min read

In brief

This retrospective study identifies risk factors for post-obstructive diuresis (POD) in pediatric patients undergoing surgical correction of ureteropelvic junction obstruction. POD can cause dangerous fluid and electrolyte disturbances after relieving chronic kidney obstruction, making early identification of at-risk patients critical for perioperative management.

Post-obstructive diuresis (POD) after UPJO surgery can cause significant fluid and electrolyte imbalances requiring close monitoring.
POD occurs when a chronically obstructed kidney is decompressed, leading to excessive urine output in the immediate postoperative period.
Distinguishing physiologic (self-limited) from pathologic POD is critical for appropriate fluid replacement and electrolyte management.
Identifying preoperative risk factors helps anticipate which pediatric patients may develop POD after pyeloplasty.

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