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Clinical application of super-mini PCNL (SMP) in the treatment of upper urinary tract stones under ultrasound guidance

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Abstract

Purpose

To present the safety and efficacy of totally ultrasonography-guided Super-mini percutaneous nephrolithotomy (SMP) in the treatment of upper urinary tract stones both in children and adults.

Patients and methods

We carried out SMP in 104 patients (including 48 children and 56 adults) with upper urinary tract stones between June 2015 and February 2017. All steps of renal access were performed by ultrasonography. The lithotripsy was performed using either Holmium laser or pneumatic lithotripter. Perioperative and postoperative parameters along with operative data were recorded in detail.

Results

The mean age of children and adult patients were 4.4 ± 3.6 and 44.3 ± 15.7 years old, respectively. The stone burden was comparable for both groups (1.72 ± 0.66 vs 1.74 ± 0.56 cm, p = 0.852). Mean operation time was not significant different between two groups (p = 0.052), while the mean haemoglobin drop in children was much lower in adult patients (6.3 ± 6.9 vs 10.9 ± 8.69, p = 0.004). Both groups had similar SFRs in postoperative 1 day and at 1-month follow-up (p = 1.000, p = 0.912). Mean hospital stay of children and adult patients was 2.3 ± 0.8 and 2.2 ± 0.76 days (p = 0.484). The total complication rate was significantly lower in two groups (p = 1.000); none of the patients required blood transfusion.

Conclusions

Ultrasonography-guided SMP was a safe and effective treatment option for moderate-sized upper urinary tract stones, and has the advantage of preventing radiation hazard, especially for pediatric stone patients.

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Acknowledgements

This work was financed by grants from National Natural Science Foundation of China (NO. 81370804 and NO. 81670643), Guangzhou Science Technology and Innovation Commission (No. 201604020001, No. 201607010162 and No. 201704020193).

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Author notes

  1. Abulizi Simayi and Yang Liu contributed equally to this work.

Authors and Affiliations

  1. Department of Urology, The Xinjiang Uyghur Autonomous Region People’s Hospital, Urumqi, Xingjiang, China

    Abulizi Simayi, Muyesaier Yiming, Ainiwaer Yusufu, Yalikun Alimu, Peng Lei, Xiaoan Zhang & Bin Wen

  2. Department of Urology, Minimally Invasive Surgery Center, Guangdong Key Laboratory of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510230, China

    Yang Liu, Jad AlSmadi, Guohua Zeng & Wenqi Wu

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  1. Abulizi Simayi
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Contributions

WW, JKA: project development. MY, YL, JK, A: data collection or management. AY, YA, PL, BW: data analysis. AS, YL: manuscript writing. XZ, GZ: manuscript editing

Corresponding author

Correspondence to Wenqi Wu.

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The authors declare no conflict of interest.

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All procedures performed in studies involving human participants were obtained from the institutional Ethics committee of The Xinjiang Uyghur Autonomous Region People’s Hospital, Xinjiang, China.

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Simayi, A., Liu, Y., Yiming, M. et al. Clinical application of super-mini PCNL (SMP) in the treatment of upper urinary tract stones under ultrasound guidance. World J Urol 37, 943–950 (2019). https://doi.org/10.1007/s00345-018-2465-6

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  • DOI: https://doi.org/10.1007/s00345-018-2465-6

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