Ureter jet parameters measured with ultrasound for assessing effectiveness of conservative treatment of single ureteral calculus
Objective To observe the value of ureter jet parameters measured with ultrasound for assessing effectiveness of conservative treatment of single ureteral calculus.Methods Totally 129 patients with single ureteral calculus who would undergo conservative treatment were prospectively enrolled.Taken no ipsilateral ureteral calculus showed on CT nor abdominal plain film during 1 month's follow-up after treatment as the standards of successful treatment and the otherwise as failure.Ultrasonic data,including the maximum diameter,side and location of ureteral calculi,the anteroposterior diameter of renal pelvis and ureter jet parameters,i.e.the frequency,peak velocity and duration were compared between patients with different outcomes.Multivariate logistic regression analysis was performed to screen the independent impact factors of clinical outcomes.Then receiver operating characteristic(ROC)curves were drawn,and the area under the curve(AUC)was calculated to evaluate the efficacy of the above parameters.Results Conservative treatment was successful in 87 cases(successful group)but failed in 42 cases(failure group).Multivariate analysis showed that the maximum diameter of calculus,as well as the frequency,peak velocity and duration of ureter jet were all independent impact factors of success of conservative treatment for single ureteral calculus(all P＜0.05).ROC curve demonstrated that the frequency of ureter jet had the best efficacy,with AUC of 0.858.Taken 1.45 times/min as the optimal cut-off value,the sensitivity,specificity,positive predictive value,accuracy and F1 score of the frequency of ureter jet for assessing effectiveness of conservative treatment of singke ureteral calculus was 78.57％,83.91％,70.21％,82.17％and 0.742,respectively.Conclusion Ureter jet parameters measured with ultrasound was helpful for assessing effectiveness of conservative treatment of single ureteral calculus.
万方数据
维普
