血氧饱和度降低可发生于肝病患者,这是由于动静脉分流的存在。这种肺内的动静脉分流的X线诊断极困难。作者报道1例用大颗粒聚合白蛋白作肺放射性同位素扫描证实的肺动静脉瘘。病例报告女性,16岁,有紫绀。13岁时患伴有黄疸的急性疾病,临床诊断为“急性肝炎”。此后,紫绀进行性加重伴呼吸困难。入院时身高和体重在第10百分位,有多个蜘蛛痣,粘膜无毛细血管扩张。脉搏 Oxygen saturation can occur in patients with liver disease, which is due to the presence of arteriovenous shunts. X-ray diagnosis of arteriovenous shunts in the lungs is extremely difficult. The authors report a case of pulmonary arteriovenous fistula confirmed by large radioactive isotope radiographs of large aggregated albumin. Case report Female, 16 years old, with cyanosis. 13-year-old suffering from acute jaundice, clinical diagnosis of “acute hepatitis.” Since then, cyanosis progressive increase with breathing difficulties. Admission height and weight in the 10th percentile, there are multiple spider nevus, mucosal capillary expansion. pulse