晚发性维生素Ｋ缺乏致颅内出血是婴儿期常见的危重症 ,具有起病急、进展快、致残率和病死率高等特征。我院自 1996年 2月～ 1999年 6月开展了锥颅钻孔闭式引流术治疗该症患儿 2 1例 ,疗效显著 ,现总结如下。1　资料与方法1 1　临床资料　本组 2 1例 ,男 15例 ,女 6例。年龄 2 0 Delayed onset of vitamin K deficiency caused by intracranial hemorrhage is a common critical illness in infancy, with acute onset, rapid progress, high morbidity and mortality characteristics. Our hospital from February 1996 to June 1999 carried out a cone craniotomy drainage closed 21 cases of children with this disease, the effect is significant, are summarized as follows. 1 Materials and Methods 1 1 Clinical data 21 patients in this group, 15 males and 6 females. Age 2 0