患儿男,4岁,体重16kg。因高热、咳嗽来门诊治疗,T39.8℃,流涕有鼻塞,诊断为“上呼吸道感染”。肌肉注射安痛定2ml,口服感冒通0.1mg 每日3次。第5天患儿突然出现血尿由家属带来复诊。既往无肾脏疾病史,无药物过敏史。查体:T37℃,R30次,P102次,无皮疹,颌下淋巴结无肿大、压痛。双肺呼吸音稍粗糙,心音有力,心率 Children male, 4 years old, weighing 16kg. Because of fever, cough to outpatient treatment, T39.8 ℃, runny nose with nasal congestion, diagnosed as “upper respiratory infection.” Intramuscular injection of analgesic 2ml, oral flu 0.1mg 3 times a day. Day 5 children with sudden onset of hematuria brought by the family referral. No previous history of kidney disease, no history of drug allergy. Examination: T37 ℃, R30 times, P102 times, no rash, submandibular lymph nodes without swelling, tenderness. Breath sounds slightly rough lungs, heart sounds strong, heart rate