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胎儿肾功能严重损害是终止妊娠和施行宫腔内分流手术的指征,利用超声产前诊断泌尿道畸形是困难的,即使是产后超声检查也多半会将多囊肾和肾积水误诊。况且对胎儿泌尿道的影像学检查只能间接反映其肾功能。尿钠是应用最广的反映胎儿肾功能的生化指标。如果胎儿尿钠浓度超过100mmol/L,表明胎儿肾功能极差,胎儿尿钙是反映胎儿肾发
Severe fetal renal damage is the termination of pregnancy and intrauterine shunt surgery indications, the use of ultrasound prenatal diagnosis of urinary tract malformations is difficult, even after the postpartum ultrasound will be mostly polycystic kidney disease and hydronephrosis misdiagnosed. Moreover, the fetal urinary tract imaging examination can only indirectly reflect the renal function. Urine sodium is the most widely used biochemical indicators of fetal kidney function. If the fetal urine sodium concentration exceeds 100mmol / L, indicating poor fetal kidney function, fetal urinary calcium is a reflection of fetal kidney