When routine D-J implantation necessary during PNL?

Area of Science:

• Urology
• Nephrology
• Surgical Outcomes

Background:

• Percutaneous nephrolithotomy (PNL) is a common procedure for kidney stone disease.
• Prolonged urine leakage (PUL) can complicate PNL, potentially requiring interventions like Double-J (DJ) catheter placement.
• Identifying risk factors for PUL is crucial for optimizing patient management.

Purpose of the Study:

• To investigate the characteristics of patients requiring DJ catheter implantation after PNL.
• To identify risk factors associated with prolonged urine leakage (PUL) post-PNL.
• To predict which patients are likely to need medical treatment, specifically DJ catheter placement.

Main Methods:

• Retrospective analysis of 535 adult patients undergoing PNL for kidney stones.
• Patients were categorized into two groups: those with DJ catheter placement for PUL (>24h) and those without.
• Statistical comparison of stone burden, number of accesses, and stone status between groups.

Main Results:

• Patients with DJ catheterization had significantly higher mean stone burden (951.94 mm² vs. 676.35 mm²).
• DJ catheter implantation rates were higher for stone burdens >1000 mm², multiple accesses (≥2), and residual stones post-PNL.
• A stone burden >1000 mm², ≥2 accesses, and residual stones were strong predictors for DJ catheter need.

Conclusions:

• Stone burden >1000 mm², multiple PNL accesses, and residual stones significantly increase the likelihood of requiring DJ catheter implantation due to PUL.
• DJ catheter placement is highly advisable in patients with these identified risk factors.
• These findings aid in predicting and managing post-PNL complications.