Mini PCNL Over Standard PCNL: What Makes it Better?

Area of Science:

• Urology
• Minimally Invasive Surgery
• Nephrolithiasis Management

Background:

• Rising incidence of small- and medium-size renal stones necessitates effective management strategies.
• Percutaneous nephrolithotomy (PCNL) is a cornerstone minimally invasive technique for kidney stone removal.
• Concerns regarding stone clearance, bleeding, urine leak, and infectious complications drive innovation in surgical approaches.

Purpose of the Study:

• To systematically review and compare the outcomes of mini-PCNL versus standard PCNL for renal stone management.
• To evaluate the efficacy and safety profile of miniaturized PCNL instruments.
• To identify factors influencing stone-free rates and complication profiles in PCNL procedures.

Main Methods:

• Systematic review of original research articles identified through keyword electronic database searches.
• Inclusion of 19 original articles after excluding duplicates from an initial 156 hits.
• Comparative analysis of mini-PCNL and standard PCNL based on stone-free rates, complications, and operative parameters.

Main Results:

• Mini-PCNL demonstrated significantly reduced bleeding complications and shorter hospital stays compared to standard PCNL.
• No significant difference was observed in stone-free rates between mini-PCNL and standard PCNL.
• Operative time was slightly longer in mini-PCNL, primarily due to sheath size and stone fragment retrieval.

Conclusions:

• Mini-PCNL is as effective as standard PCNL in achieving stone clearance, with an improved safety profile regarding bleeding and hospital stay.
• Stone burden is a critical determinant of the overall stone-free rate, irrespective of the PCNL technique used.
• Further high-quality studies with larger sample sizes are needed to solidify recommendations for mini-PCNL.