Abstract
Purpose
Contemporary predictive tools for miniaturized percutaneous nephrolithotomy (mPCNL) mainly focus on stone clearance but not perioperative complications, especially infection and hemorrhage. This study aimed to evaluate whether the Mayo adhesive probability (MAP) score, an index of the perinephric fat characteristics, can predict postoperative fever and intraoperative hemorrhage in mPCNL.
Methods
This is a retrospective study recruiting 159 mPCNL patients from July 2018 to January 2022. MAP scores were recorded using preoperative computed tomography. Postoperative complications included postoperative fever and intraoperative bleeding, defined as hemoglobin drop.
Results
Over half patients had the MAP score ≧ 3. Men, elderly, chronic kidney disease, and diabetes were associated with a higher MAP score. The patients with a higher MAP score were more likely to have postoperative fever after mPCNL. On multivariate analysis, preoperative positive urine culture (OR 2.68) and a higher MAP score (OR 2.28) were both significantly associated with postoperative fever. ROC curves analysis of the combination of these two factors on predicting postoperative fever showed AUC values were 0.731 (0.652–0.810). Moreover, a higher MAP score (OR 2.30) and longer operative time (OR 2.16) were significantly associated with higher hemoglobin drop on multivariate analysis.
Conclusion
A high MAP score was associated with postoperative fever and intraoperative hemorrhage in patients undergoing mPCNL. The MAP score can be a novel and easy predictive tool to help endourologists improve the awareness of mPCNL safety.
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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WAC: investigation, data collection and management, data analysis, manuscript writing—original draft. HSH: data management. ZHL: data collection and management. CJL: conceptualization; data collection and management; investigation; data analysis; project development; resources; supervision; visualization; manuscript writing—original draft; manuscript writing—review and editing.
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Ethical approval was waived by the local Ethics Committee (IRB number: A-ER-107-291 and A-ER-108-425) in view of the retrospective nature of the study and all the procedures being performed were part of the routine care.
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Approved by National Cheng Kung University Hospital Institutional Ethics Committee (IRB number: A-ER-107-291 and A-ER-108-425). The requirement for written Informed Consent was waived by the approving ethics committee as this was a retrospective study.
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Chen, WA., Huang, HS., Lu, ZH. et al. The Mayo adhesive probability score predicts postoperative fever and intraoperative hemorrhage in mini-percutaneous nephrolithotomy. World J Urol 41, 2503–2509 (2023). https://doi.org/10.1007/s00345-023-04529-2
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DOI: https://doi.org/10.1007/s00345-023-04529-2