晚发性维生素K缺乏症是新生儿晚期至乳儿初期的出血性疾病,以突然发病,进行性贫血,严重可致颅内出血。我院1985年5月至1992年6月收治11例报道如下。1 临床资料11例中男9,女2。年龄小于28天2例,29～60天9例,均为母乳喂养,无外伤史,家族均无出血性病史。 Late onset vitamin K deficiency is an early neonatal to early infant hemorrhagic disease, sudden onset, progressive anemia, severe intracranial hemorrhage can result. Our hospital from May 1985 to June 1992 admitted 11 cases reported as follows. 1 clinical data 11 men and 9 men and 2 women. 2 cases were younger than 28 days and 9 cases were 29 to 60 days. All of them were breastfeeding without any history of trauma, and no familial history of hemorrhagic disease was found.