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The double puncture: an effective percutaneous technique for removing complex, multiple renal calculi
Radiology
|January 1, 1986
Summary
Percutaneous nephrostolithotomy (PN) for kidney stones may require a double puncture. Factors influencing this include stone burden, collecting system anatomy, and surgeon skill, with staghorn calculi posing the greatest challenge.
Area of Science:
- Urology
- Nephrology
- Medical Imaging
Background:
- Percutaneous nephrostolithotomy (PN) is a primary treatment for renal stones.
- A double puncture technique may be necessary for complex cases.
Purpose of the Study:
- To identify factors necessitating a second puncture during PN.
- To analyze the impact of stone characteristics and anatomy on procedure complexity.
Main Methods:
- Retrospective evaluation of 200 patients undergoing PN.
- Analysis of variables including stone burden, collecting system anatomy, and operator skill.
Main Results:
- 14 out of 200 patients required a second tract.
- Stone number/size (especially staghorn calculi), collecting system variations (bifid systems), and operator skill were significant factors.
- Stones in lower and middle poles increased the need for a second tract.
Conclusions:
- PN is effective but can require a double puncture in specific scenarios.
- Stone complexity and patient-specific anatomy are key determinants of needing a second tract.
- Operator experience plays a role in successful single-puncture procedures.