Efficiency of color Doppler ultrasound combined with two-dimensional ultrasound in diagnosis of scar uterus combined with placenta previa implantation
Objective:To analyze efficiency of color Doppler ultrasound combined with two-dimensional ultrasound in diagnosis of scar uterus combined with placenta previa implantation.Methods:A prospective study was conducted on 110 patients with scar uterine pregnancy admitted to this hospital from January 2021 to January 2023.All patients underwent color Doppler ultrasonography and two-dimensional ultrasonography.Using the pathological results as the'gold standard',the efficiency of color Doppler ultrasound combined with two-dimensional ultrasound in the diagnosis of scar uterus complicated with placenta previa implantation were analyzed.Results:The gold standard showed that among the 110 patients with scar uterine pregnancy,69 were positive and 41 were negative;there were 19 cases of penetrating implantation,26 cases of deep implantation and 24 cases of superficial implantation.The color Doppler ultrasonography showed that 64 cases were positive and 46 cases were negative,among them,10 cases were misdiagnosed and 15 cases were missed.The two-dimensional ultrasonography showed that 62 cases were positive and 48 cases were negative,among them,14 cases were misdiagnosed and 21 cases were missed.The color Doppler ultrasound combined with two-dimensional ultrasound showed that 70 cases were positive and 40 cases were negative,among them,3 cases were misdiagnosed and 2 cases were missed.The sensitivity,the specificity and the accuracy of color Doppler ultrasound combined with two-dimensional ultrasound in the diagnosis of scar uterus with placenta previa implantation were higher than those of the two single examinations,the missed diagnosis rate and the misdiagnosis rate were lower than those of the two single examinations,and the differences were statistically significant(P<0.05).The detection rates of color Doppler ultrasound combined with two-dimensional ultrasound in the diagnosis of penetrating implantation and shallow implantation were higher than those of the two single examinations,and the differences were statistically significant(P<0.05).There were no significant differences in the detection rate of deep implantation among the three examinations(P>0.05).Conclusions:The efficiency of color Doppler ultrasound combined with two-dimensional ultrasound in the diagnosis of scar uterus with placenta previa implantation is higher than those of the two single examinations.
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