Predictive value of urinary CT quantitative analysis for incarceration of ureteral calculi

doi:10.3877/cma.j.issn.1674-3253.2021.02.009

Abstract

Abstract:

Objective

To evaluate the predictive value of urinary CT quantitative analysis for incarceration of ureteral calculi after treatment.

Methods

A total of 120 patients with ureteral calculi who underwent calculus removal in our hospital from January 2018 to December 2018 were enrolled. Patients with ureteral calculi incarcerated after calculus removal were incarcerated (49 patients), the control group appeared (71 cases), comparing the age and gender of the two groups and the stone size, volume, hydronephrosis and CT value before the patient received the stone removal treatment, and applying logistic regression analysis. The factors affecting the incarceration of ureteral calculi after treatment were analyzed, and the receiver operating characteristic curve (ROC curve) was used to analyze the diagnostic value and diagnostic efficacy of vascular catheter incarceration after the relevant risk factors were predicted.

Results

There was no significant difference in the age, gender and other general data and the number, and location of the stones before treatment (P>0.05). The long diameter, CT value and hydronephrosis of the patients in the incarceration group. The incidence rate was significantly higher than that of the control group (P<0.05). Logistic regression showed that the long diameter of the stone, CT value of the stone and hydronephrosis were independent risk factors for the incarceration of ureteral calculi after treatment (OR=1.365, 1.011, 1.049; P=0.005, <0.001, 0.041). The ROC curve showed that the CT value combined with the diameter of the stone was diagnosed and treated with high diagnostic efficiency (AUC=0.903), which was significantly higher than the CT value, the long diameter of the stone, and the single diagnosis of hydronephrosis (Z=2.036, 2.790, 5.355; every P<0.05), the sensitivity was 89.80% and the specificity was 76.06%.

Conclusion

Quantitative analysis of urinary CT can effectively predict the incarceration of ureteral calculi after treatment, and the CT value of calculus has high sensitivity and specificity in predicting the incarceration of ureteral calculi after treatment.

Key words: CT, Quantitative analysis, Ureteral calculi, Prediction

Shuxiao Zhao, Feng Li, Zhibiao Qin, Gewen Bi, Xin Ning, Hua Lei, Juezhuo Huang, Jinming Di. Predictive value of urinary CT quantitative analysis for incarceration of ureteral calculi[J]. Chinese Journal of Endourology(Electronic Edition), 2021, 15(02): 126-129.

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Figures/Tables 5

References 15

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组别	例数	年龄[岁，(±s)]	男（例）	汉族（例）	合并痛风（例）	BMI[kg/m²，(±s)]	病程[d，(±s)]	取石方法（例）
组别	例数	年龄[岁，(±s)]	男（例）	汉族（例）	合并痛风（例）	BMI[kg/m²，(±s)]	病程[d，(±s)]	腔镜	切开	经皮肾镜
嵌顿组	49	49±10	32	23	31	25.98±4.12	150±20	21	12	16
对照组	71	48±9	45	28	46	25.91±4.39	150±22	31	19	21
统计值		t=0.635	χ²=0.047	χ²=0.667	χ²=0.047	t=0.088	t=0.088	χ²=0.151
P值		0.526	0.828	0.413	0.827	0.930	0.930	0.927

组别	例数	年龄[岁，(±s)]	男（例）	汉族（例）	合并痛风（例）	BMI[kg/m²，(±s)]	病程[d，(±s)]	取石方法（例）
组别	例数	年龄[岁，(±s)]	男（例）	汉族（例）	合并痛风（例）	BMI[kg/m²，(±s)]	病程[d，(±s)]	腔镜	切开	经皮肾镜
嵌顿组	49	49±10	32	23	31	25.98±4.12	150±20	21	12	16
对照组	71	48±9	45	28	46	25.91±4.39	150±22	31	19	21
统计值		t=0.635	χ²=0.047	χ²=0.667	χ²=0.047	t=0.088	t=0.088	χ²=0.151
P值		0.526	0.828	0.413	0.827	0.930	0.930	0.927

组别	例数	结石数量[个，(±s)]	结石位置（例）		结石部位（例）			结石长径[mm，(±s)]	结石CT值[Hu，(±s)]	肾积水（例）
组别	例数	结石数量[个，(±s)]	左	右	上段	中段	下段	结石长径[mm，(±s)]	结石CT值[Hu，(±s)]	肾积水（例）
嵌顿组	49	3.12±0.63	27	22	25	21	23	10.08±2.97	857±254	32
对照组	71	2.98±0.71	38	33	36	18	17	8.75±2.09	704±137	33
统计值		t=1.111	χ²=0.029		χ²=2.942			t=2.881	t=4.271	χ²=4.139
P值		0.269	0.864		0.230			0.005	<0.001	0.042

组别	例数	结石数量[个，(±s)]	结石位置（例）		结石部位（例）			结石长径[mm，(±s)]	结石CT值[Hu，(±s)]	肾积水（例）
组别	例数	结石数量[个，(±s)]	左	右	上段	中段	下段	结石长径[mm，(±s)]	结石CT值[Hu，(±s)]	肾积水（例）
嵌顿组	49	3.12±0.63	27	22	25	21	23	10.08±2.97	857±254	32
对照组	71	2.98±0.71	38	33	36	18	17	8.75±2.09	704±137	33
统计值		t=1.111	χ²=0.029		χ²=2.942			t=2.881	t=4.271	χ²=4.139
P值		0.269	0.864		0.230			0.005	<0.001	0.042

因素	B	标准误	W	P值	OR	95%置信区间
因素	B	标准误	W	P值	OR	下限	上限
结石长径	0.312	0.112	7.780	0.005	1.365	1.097	1.700
结石CT值	0.011	0.002	22.742	<0.001	1.011	1.006	1.015
肾积水	1.106	0.540	4.197	0.041	3.022	1.049	8.706

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