Abstract
Objective To systematically analyze the clinical efficacy and safety of micro-percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) in the treatment of kidney stones that measure smaller than 3 cm. Methods Through searching PubMed, Cochrane library, Embase, CNKI, Wanfang database and SinoMed, clinical trials related to micro-PCNL and RIRS in treating small-and medium-size kidney stones in both Chinese and English from January 1, 2011 to March 1, 2017 were retrieved. According to the inclusion and exclusion criteria, relevant clinical trial data were extracted from the literatures and statistically analyzed by Revman 5.0 software to draw a conclusion. Results Four articles consisting of 328 patients were included in this meta-analysis, including two randomized controlled trials and two retrospective trials. No statistical significance was noted in terms of the length of hospital stay [(WMD=2.71, 95%CI (-3.78,9.20)], operation time (WMD=6.56, 95%CI (-22.94,36.05)] and postoperative complications [OR=0.99, 95%CI (0.51,1.95)] between RIRS and micro-PCNL, whereas the removal rate of kidney stones by micro-PCNL was significantly higher compared with that by RIRS (OR=2.30, 95%CI (1.24,4.26)]. Conclusion Both micro-PCNL and RIRS are efficacious and safe in the treatment of kidney stones, whereas the removal rate of micro-PCNL is considerably higher than that by RIRS. Key words: Micro, percutaneous nephrolithotomy; Flexible ureteroscope; Kidney stone; Meta-analysis
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