Relevance of Guy's stone score in evaluation and outcome of percutaneous nephrolithotomy

Abstract

Objectives: This study aimed to ascertain the relevance of the Guy's stone score in the evaluation and outcome of percutaneous nephrolithotomy (PCNL).

Materials and methods: This 2-year hospital-based, prospective clinical study enrolled 100 patients who were indicated for PCNL. All patients were allocated into groups according to the Guy's stone score and were compared for factors associated with stone-free rate (SFR) and complication risk. The data were statistically analyzed using SPSS version 20.

Results: The median patient age was 40 years (range, 5-70 years). A greater portion of the patients were aged 31-40 years. A majority of the stones were solitary, found in 83% of the kidneys. Overall, 49% were grouped as Guy's stone score 1, 26% as 2, 11% as 3, and 14% as 4. The overall SFR was 97%. Furthermore, SFR was found to be 100% for Guy's stone score 1, 100% for 2, 90.91% for 3, and 85.7% for 4. Intraoperative and postoperative complication rates were found in 6% and 38% of the patients, respectively. Among postoperative complications, pain (26%) was the most frequent, followed by fever (8%), bleeding (3%), and puncture site abscess (1%).

Conclusions: Based on the study findings, Guy's stone score was efficient in predicting PCNL outcomes.

Keywords

Endourology / Guy's stone score / Percutaneous nephrolithotomy / Renal calculi

Acknowledgments

The authors would like to acknowledge all study participants.

Statement of ethics

This study obtained ethical clearance from the Institutional Review Board (I.E.S.C/71/2021). Written informed consent was obtained from all study participants to use their data in scientific publications. This study was conducted in accordance with the principles of the Declaration of Helsinki.

Conflicts of interest statement

No conflict of interest has been declared by the authors.

Funding source

The present study is not supported by any funding sources.

Author contributions

All authors contributed equally in all aspects of publication.

Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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