Abstract:Objective To systematically assess the effectiveness and safety of intracavitary contrast-enhanced ultrasound (ICCEUS) and conventional ultrasound (US)-guided PCNL for the treatment of kidney stones.Methods A literature search in PubMed, The Cochrane Library, Embase, CNKI, VIP, SinoMed and Wanfang Data was performed to collect, screen and extract clinical research data comparing contrast-enhanced ultrasound with conventional ultrasound-guided PCNL. Meta-analysis was performed by RevMan 5.3 software.Results 7 literatures were included in this study with a total sample size of 696 cases. ICCEUS-PCNL group had higher success rate of single puncture (OR^ = 4.52, 95%CI: 2.99 ~ 6.82) and stone clearance rate (OR^ = 2.32, 95%CI: 1.15 ~ 4.68) than US-PCNL group. The complication rate (OR^ = 0.49, 95%CI: 0.30 ~ 0.80) was lower than US-PCNL group. The hemoglobin loss value (MD = -6.94, 95%CI: -9.72 ~ -4.16) and intraoperative blood loss (MD = -44.06, 95%CI: -73.11 ~ -15.02) were less than US-PCNL group. The operation time (MD = -20.86, 95CI%: -40.28 ~ -1.44) and hospitalization time (MD = -2.38, 95%CI: -4.15 ~ -0.60) were shorter than US-PCNL group.Conclusion Compared with US-PCNL, this Meta-analysis shows that ICCEUS-PCNL can improve the success rate of single puncture and stone clearance rate, shorten the operation time and hospitalization time, and reduce the hemoglobin drop value/intraoperative blood loss and complication rates. It is worthy of clinical application.