Single step track dilatation for percutaneous nephrolithotomy in children

Area of Science:

• Pediatric Urology
• Minimally Invasive Surgery
• Nephrolithotomy

Background:

• Percutaneous nephrolithotomy (PCNL) is a key procedure for pediatric kidney stones.
• The tract dilatation method impacts procedure efficiency and safety.
• Limited data exists on single-step dilatation in pediatric PCNL.

Purpose of the Study:

• To compare the safety and efficacy of single-step versus serial tract dilatation in pediatric PCNL.
• To evaluate perioperative complications associated with each dilatation technique.
• To assess outcomes including access time, operative duration, and stone-free rates.

Main Methods:

• A prospective randomized study involving 70 children (<18 years) with kidney stones (2-4 cm).
• Patients were randomized into two groups: serial Alken telescopic metal dilatation (Group A) and single-step dilatation (Group B).
• Primary outcomes included access time and complication rates; secondary outcomes covered fluoroscopy time, operative duration, stone-free rate, and blood loss.

Main Results:

• Both techniques achieved successful access in all cases via a single tract.
• Single-step dilatation (Group B) demonstrated significantly shorter access and dilatation fluoroscopy times.
• Group A (serial dilatation) exhibited a higher complication rate and greater need for blood transfusion.

Conclusions:

• Single-step dilatation is comparable to serial dilatation in terms of operative time and stone-free rates for pediatric PCNL.
• The single-step technique offers significant advantages by reducing access time and fluoroscopy exposure.
• This method presents a safer and more efficient approach for pediatric percutaneous nephrolithotomy.