Abstract: Propionic acidemia is a rare disease. It is also a common organic acidemia.The clinical manifestations of the patients are nonspecific，including vomiting，lethargy，muscle weakness or convulsions during acute stage，and motor，language and intellectual retardation due to brain damage during the stable phase.Diagnosis of the disease is based on increased blood propionyl-carnitine，propionyl-carnitine to acetyl-carnitine ratio，urinary methylcitrate and mutation of PCCA or PCCB gene. Treatment of the disease is based on dietary therapy，L-carnitine and symptomatic management.Propionic acidemia can be detected by prenatal testing for the fetus of the family whose proband had definite diagnosis.In order to improve the strategy for the diagnosis and treatment of propionic acidemiaand achieve the Objective of early diagnosis，early treatment and better prognosis，the consensus was formulated by referring to relevant domestic and foreign literature and careful discussion by relevant domestic experts.

Key words: propionic acidemia, newborn screening, organic acidemia, diagnosis, treatment

摘要： 丙酸血症是罕见病，也是相对常见的有机酸血症，临床表现无特异性，急性发作期以呕吐、嗜睡、肌无力或抽搐为主，稳定期以脑损伤导致的运动、语言及智力发育落后为主。诊断主要依据血丙酰肉碱、丙酰肉碱与乙酰肉碱比值、尿甲基枸橼酸增高及PCCA或PCCB基因变异。治疗以饮食治疗、左卡尼汀及对症处理为主。在先证者诊断明确的基础上，父母再生育时可通过产前诊断判断胎儿是否患丙酸血症。为提高丙酸血症的诊治策略，达到早诊断、早治疗及改善预后的目的，参考国内外相关文献，经国内相关专家认真及充分讨论，制定该共识。

关键词: 丙酸血症, 新生儿筛查, 有机酸, 诊断, 治疗