迟发性ＶＫ缺乏症起病急 ,就诊时多数发生颅内出血 ,病死率高 ,且治疗存活者多有后遗症 ,所以对此病的早期诊断及治疗对挽救患儿生命及减轻后遗症十分重要。我科 1995—1998年共收治婴儿迟发性ＶＫ缺乏症 5 0例 ,报告如下。1　临床资料1.1一般资料　 5 0例中 ,男 39例 ,女 11例 Late onset of VK deficiency acute onset, most of the time of treatment of intracranial hemorrhage, high mortality and treatment of survivors and more sequelae, so early diagnosis and treatment of this disease to save children’s lives and reduce sequelae is very important. Our department from 1995 to 1998 were treated 50 cases of delayed VK deficiency in infants, the report is as follows. 1 Clinical data 1.1 General Information 50 patients, 39 males and 11 females