The “all-seeing needle” micro-PCNL versus flexible ureterorenoscopy for lower calyceal stones of ≤ 2 cm
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The objectives of the study are to compare the safety and efficacy of “all-seeing needle” optical puncture system micro-percutaneous nephrolithotomy (micro-PCNL) and flexible ureterorenoscopy (FURS) for the treatment of lower calyceal stones of ≤ 2 cm and to determine the advantages and disadvantages of each. 116 patients in total with lower calyceal stones of ≤ 2 cm were randomly divided into two equal groups, “all-seeing needle” optical puncture system micro-PCNL and FURS. In both groups, holmium laser was utilized for lithotripsy. The perioperative parameters were compared between the two groups. Compared to the “all-seeing needle” micro-PCNL group, the mean operative time was significantly longer in the FURS group (P = 0.000). However, there was no significant difference between the two groups with respect to mean hemoglobin reduction (P = 0.087), complications (P = 0.731) and LOS (P = 0.856). The overall SFR of the “all-seeing needle” micro-PCNL group and FURS group was 84.5% (49/58) and 79.3% (46/58), respectively, without any significant difference between the groups (P = 0.469). For treating lower calyceal stones of ≤ 2 cm, the “all-seeing needle” micro-PCNL group had shorter operative time than FURS, while no significant differences between the two groups with respect to mean hemoglobin reduction, complications, LOS and SFR were found.
KeywordsAll-seeing needle Optical puncture system Micro-PCNL FURS Lower calyceal stones
We are very grateful to Najib Isse Dirie for his language modification as a native speaker.
This study was funded by the Hubei Province Health and Family Planning Scientific Research Project (Grant Number WJ2017M257) and the Natural Science Foundation of Hubei Province of China (Grant Number 2017CFB516, 2017CFB638).
Compliance with ethical standards
Conflict of interest
All authors declare that no conflict of interests exists.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments.
Informed consent was obtained from all individual participants included in the study.
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