Haemorrhagic disease of the newborn because of a vitamin K-dependent coagulation factors in the decline in physiological self-limited disease, a normal full-term infants in more than 2-5 days after onset, the incidence of premature infants until 2-3 weeks. prevalent in parts of gastrointestinal bleeding.

The incidence of neonatal hyperbilirubinemia neonatal vitamin K deficiency is the cause, coagulation factor II, vii. ¢ù, ¢ú (which clotting factor necessary for the synthesis of vitamin K participation Also known as vitamin K-dependent factors)% less than in the whole liver, which led to bleeding. Neonatal vitamin K deficiency in addition to the normal reasons : 1 direct access to vitamin K from food, Bacterial part can be produced, but there is no birth gut bacteria, so little vitamin K synthesis; 2 absorption of vitamin K-dependent and bile, bile acid in newborns, especially premature infants low. affect the absorption of vitamin K; 3. newborn infants less than infants breast milk also contain vitamin K (vitamin K content of human milk L respectively. Milk is 60 ¦Ìg L). Most cases of neonatal hyperbilirubinemia for gastrointestinal bleeding, performance materials for hematemesis or coffee, Dapiandaixie or melanosis. followed by skin, umbilical hemorrhage. It is important to point out that babies born in the formal hospitals generally conventional preventive injection of vitamin K, So this is not very high incidence of the disease, treatment is the key measures of vitamin K injection.

Late vitamin K deficiency prevalent in 1-2 months after birth breast-fed babies exclusive breastfeeding, mainly because the incidence is so inadequate intake of vitamin K, and the use of antibiotics and diarrhea affect the absorption of vitamin K, sulfamethoxazole - resistant gastrointestinal inhibit normal flora. in the intestinal synthesis of vitamin K to reduce the incentives often. Late vitamin K deficiency speaking acute intracranial hemorrhage, were pale, irritable crying, seizures, unconsciousness. precarious condition and the prognosis is poor. There are some people who advocate breastfeeding babies within March. In particular, frequent diarrhea and antibiotic use a monthly injection of vitamin K to prevent the onset of the disease.

This article was posted on 2007-02-27