论文部分内容阅读
目的:了解影响肾结石体外冲击波碎石(Extracorporeal shock wave lithotripsy,ESWL)成功的因素,建立回归模型估计碎石后结石排空率。方法:1996年5月～2006年10月对1254例肾结石(结石直径<20mm)患者进行ESWL治疗,治疗效果在3个月随访时进行评价。碎石后比较无结石率与结石的特性,患者个人情况的相关性用方差检验进行分析,然后采用多变量回归分析方法进一步分析方差检验的有意义因素。结果:3个月随访时,ESWL后结石排空率为86.6。1.44(18例)患者结石未碎裂,7.97(100例)患者结石碎片未被清除,36.5患者接受三次ESWL治疗。方差检验分析发现患者年龄、性别、结石大小、结石位置、结石数目、结石性质、肾形状和先天不规则肾对碎石后结石的排空率均有影响。多变量分析排除了结石性质和患者性别作为影响无结石率的因素。根据这些因素,我们建立了ESWL后无结石率的回归分析模型。该模型的准确率为86.6。结论:结石大小、位置、数目、患者年龄、肾形状和先天性不规则肾是ESWL后结石清除率的影响因素。
OBJECTIVE: To understand the factors influencing the success of extracorporeal shock wave lithotripsy (ESWL) and to establish a regression model to estimate the post-gravel stone emptying rate. Methods: From May 1996 to October 2006, 1254 patients with kidney stones (diameter <20mm) underwent ESWL. The therapeutic effect was evaluated at 3 months follow-up. After lithotripsy, compare the characteristics of no stone and stone, the correlation of patient’s personal situation is analyzed by variance test, and then use multivariate regression analysis method to further analyze the significance of variance test. RESULTS: At 3 months of follow-up, stones were not fractured in 86.6.1.44 (18 patients) after ESWL and none in 7.97 (100 patients), and 36.5 were treated with ESWL three times. Variance analysis showed that age, gender, size of stone, location of stone, number of stone, nature of stone, shape of renal and innate irregular kidney affected the emptying rate of stone after lithotripsy. Multivariate analysis ruled out the nature of stone and the gender of the patient as a factor affecting the rate of stonelessness. Based on these factors, we established a regression-free regression model for ESWL. The accuracy of the model is 86.6. CONCLUSIONS: The size, location, number of stones, patient age, kidney shape, and congenital irregular kidney function are the influencing factors for stone clearance after ESWL.