造成新生儿出血的原因不外乎以下三方面:血管因素;血小板的质差、量少;凝血机制有问题。新生儿出血是常见的症状,其中,最常见的是新生儿出血症。维生素K与凝血的关系密切。维生素K虽然不直接参与凝血的过程,但有些凝血因子前体物质的形成,需要在肝脏合成并需要维生素K的参与。所以,当维生素K缺乏或者肝功能差时,均可引起出血。造成新生儿出血症的原因有: ①母乳中维生素K的含量低; ②出生不久的新生儿肠道内尚未建 The causes of neonatal bleeding is nothing more than the following three aspects: vascular factors; poor quality of platelets, less; coagulation problems. Neonatal bleeding is a common symptom, of which the most common is neonatal hemorrhagic disease. Vitamin K and clotting are closely related. Although vitamin K does not directly participate in the process of coagulation, the formation of some clotting factor precursors needs to be synthesized in the liver and requires vitamin K involvement. So, when vitamin K deficiency or poor liver function, can cause bleeding. Causes of neonatal hemorrhagic disease are: ① low levels of vitamin K in breast milk; ② neonatal intestine has not yet been born