出血是新生儿期常见症状,严重出血可威胁到患儿的生命。由于新生儿出凝血系统发育不成熟,而且往往缺乏特异性病史及体征,因此新生儿出血性疾病早期诊断较困难,常错失最佳治疗时机。因此了解新生儿出血性疾病的临床及实验室检查特 Bleeding is a common symptom in the neonatal period, and severe bleeding can threaten the child’s life. As the newborn out of the clotting system immature, and often the lack of specific history and signs, so early diagnosis of neonatal hemorrhagic disease more difficult, often missed the best timing of treatment. Therefore, understanding of neonatal hemorrhagic disease clinical and laboratory tests