Influence of Body Mass Index on the Surgical Outcomes of Flexible Ureteroscopy for Pediatric Upper Urinary Tract Aalculi—A Single Surgeon Experience - 24/07/21
Résumé |
OBJECTIVE |
To examine the association between body mass index (BMI) and surgical outcomes of flexible ureteroscopy (FURS) for pediatric upper urinary tract calculi and to estimate the influence of BMI percentile on the learning curve of pediatric FURS.
MATERIALS AND METHODS |
We reviewed our prospectively maintained database containing children who had kidney or ureteral stones from June 2014 to April 2019. We calculated BMI and plotted it on the Centers for Disease Control and Prevention growth chart for sex and age to estimate BMI percentile. Patient demographics, intraoperative data, stone characteristics, stone-free rate (SFR), and complication rate (CR) were analyzed. Learning curves stratified by BMI percentile groups were generated.
RESULTS |
The final analysis included 161 children, of whom 63 (39.1%) had upper body weight percentile (UBW), 64 (39.8%) had normal body weight percentile (NBW), and 34 (21.1%) had lower body weight percentile (LBW). The median stone burden of the 3 groups were 1.14 (IQR 0.50-3.41), 1.13 (IQR 0.70-3.14), and 0.95 (IQR 0.50-1.77), respectively (P = .17). The SFRs were 90.5% (57/63) in the UBW group, 81.2% (52/64) in the NBW group and 70.6% (24/34) in the LBW group (P = .04). The CRs were 15.9% (10/63), 21.9% (14/64), and 29.4% (10/34), respectively (P = .29). The learning curves showed that the SFR of FURS could be improved after about 100 cases. And decreasing BMI could steepen the learning curve of SFR.
CONCLUSIONS |
BMI is associated with the SFR of FURS. LBW children had the lowest SFR compared to UBW and NBW children. Lower BMI percentile makes the success of FURS more challenging.
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| Funding disclosure: The authors declare that they have no relevant financial interests. |
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| Author's Contribution: Yu Zhang: Data collection/Project development/Data analysis/Manuscript writing. XiaoChuan Wang: Data collection/ Data analysis. Jun Li: Project development/Critical revision. Ye Tian: Project development. |
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| Acknowledgment: We thank all the staff of the Department of Urology in the Capital Medical University Affiliated Beijing Friendship Hospital. |
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| Conflict of interest statement: We confirm that there are no known conflicts of interest associated with this publication and there has been no significant financial support for this work that could have influenced its outcome. |
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| We confirm that the manuscript has been read and approved by all named authors and that there are no other persons who satisfied the criteria for authorship but are not listed. |
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| Compliance with Ethical Standards. |
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| Ethical approval: This article does not contain any studies with human participants or animals performed by any of the authors; and it receives ethics approval from Capital Medical University affiliated Beijing Friendship Hospital Ethics Committee; No informed consent was obtained because we applied for exception to informed consent from our ethics committee. |
Vol 153
P. 291-297 - juillet 2021 Retour au numéro
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