Objective: To compare the outcomes of 30F-tract and 18F-tract PCNL in the treatment of renal stone. Method; One hundred and twelve patients undergone single-tract PCNL (30F-tract, 66 cases; 18F tract, 46 cases) in our clinic were retrospectively studied. The clinical data including blood loss, transfusion rate, operation time, stone-free rate and complications were compared. Results; 30F-tract PCNL caused faster stone removalspeed [ (3. 99 ±0.37) mmVmin vs (1.37 ±0.28) mmVmin] and bleeding speed [ (0.297 ±0.03) g/ (L· min) vs (0. 143 ±0. 01) g/ ( L · min) ] , leading to higher transfusion rate (24 % vs 9 % ) , less operation time [ (111 ±39) min vs ( 156 ±49) min] and higher stone-free rate (80 % vs 61 % ). Blood loss per square millimeter of stone in this two groups was comparable. Conclusion; 30F-tract PCNL causes faster stone removal speed, faster bleeding speed and higher stone-free rate. Blood loss per square centimeter of stone is comparable with that of 18F-tract PCNL.%目的:比较30 F通道与18 F通道经皮肾镜术治疗肾结石的临床疗效.方法:对112例肾结石患者分别行不同口径单通道经皮肾镜碎石取石术(PCNL),其中30 F通道组66例,18 F通道组46例,分析比较两组术中出血量、输血率、手术时间、一期结石取净率及并发症等指标.结果:30 F通道组结石面积较18F通道组大[(429±280)mm2对比(292±160)mm2];30 F通道组与18 F通道组比较,手术时间短[(111±39)min对比(156±49)min],取石效率(单位时间取石率)高[(3.99±0.37)mm2/min对比(1.37±0.28)mm2/min],一期结石取净率高(80％对比61％),两组比较差异具统计学意义(P＜0.05).但30 F组单位时间出血量大,是18 F组的2倍[(0.297±0.03)g/(L·min)对比(0.143±0.01)g/(L·min)],总出血量多[(33±19)g/L对比(22±21)g/L],输血率高(24％对比9％),两组比较差异具统计学意义(P＜0.05),但两组单位结石面积出血量相当[(7.69±0.64)g/(L·cm2)对比(7.63±0.59)g/(L·cm2)].结论:与18 F通道经皮肾镜术比较,30 F通道经皮肾镜术取石效率高,一期结石取净率高,单位时间出血量大,但单位结石面积出血量两组相当.
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