肾病综合征(nephrotic syndrome,NS)是最常见的肾脏疾病之一,可发生于任何年龄人群。其主要临床特点是大量蛋白尿、低蛋白血症、全身程度不同的水肿和高脂血症。在肾病综合征的发生、发展过程中可出现多种并发症,如感染、营养不良、静脉血栓以及急性肾功能衰竭等,成为NS疗效差、预后不良的重要因素,而感染是NS的常见并发症之一。血清降钙素原(procalcitonin,PCT)自20世纪90年代Assicot等[1]首 Nephrotic syndrome (NS) is one of the most common kidney diseases and can occur in people of any age. Its main clinical features are large amounts of proteinuria, hypoproteinemia, systemic edema and hyperlipidemia. In the occurrence and development of nephrotic syndrome, a variety of complications such as infection, malnutrition, venous thrombosis and acute renal failure may become an important factor in poor efficacy and poor prognosis of NS, and infection is a common complication of NS One of the diseases. Serum procalcitonin (procalcitonin, PCT) since the 20th century, Assicot et al [1]