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Predicting the outcome of mini percutaneous nephrolithotomy using STONE nephrolithometry score-a single-center
Bidhan Sigdel1, Samir Shrestha2, Pukar Maskey2
1Department of Surgery, Urology Unit, Patan Academy of Health Sciences, Patan Hospital, Lalitpur, Nepal. bidhansigdel@pahs.edu.np.
Urolithiasis
|December 10, 2022
Summary
The STONE nephrolithometry score effectively predicts stone-free rates after mini-percutaneous nephrolithotomy (m-PCNL). Lower scores correlate with successful outcomes, aiding surgical planning and patient counseling for kidney stone treatment.
Area of Science:
- Urology
- Nephrolithotomy
- Surgical Outcomes
Background:
- Mini-percutaneous nephrolithotomy (m-PCNL) is a common procedure for kidney stones.
- Predicting outcomes like stone-free status and complications is crucial for surgical planning.
Purpose of the Study:
- To evaluate the STONE nephrolithometry score's ability to predict stone-free rates and complications after m-PCNL.
- To assess the correlation between STONE scores and surgical outcomes.
Main Methods:
- Prospective observational study of 106 patients undergoing m-PCNL.
- STONE nephrolithometry score used for pre-operative assessment.
- Stone-free status evaluated by X-ray KUB; complications graded using modified Clavien system.
Main Results:
- Overall stone-free rate was 83%.
- Lower STONE scores were significantly associated with achieving stone-free status (p < 0.001).
- Complication rate was 23%, predominantly Clavien grade I; higher STONE scores showed a non-significant trend towards increased complications (p = 0.11).
Conclusions:
- The STONE nephrolithometry score is a valuable tool for predicting stone complexity and stone-free status pre-operatively.
- This score aids in surgical planning and patient counseling for m-PCNL procedures.
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