维生素Ｋ缺乏致婴儿自发性血胸１例首都儿科研究所（１０００２０）李杰，宋慧琴女，４０天。入院前１０小时无诱因出现呼吸困难，喘憋，逐渐加重伴面色苍黄，不咳，无发热，无呕血、便血及鼻衄。患儿系第一胎，足月顺产，生后母乳喂养，病前未服任何药物，无外伤史。家族... A case of vitamin K deficiency caused spontaneous hemothorax in 1 case Capital Institute of Pediatrics (100020) Li Jie, Song Huiqin female, 40 days. No incentive to appear 10 hours before admission, dyspnea, wheezing, and gradually increased with pale yellow, no cough, no fever, no vomiting, blood in the stool and epistaxis. Children with the first child, full-term pregnancy, breastfeeding after birth, before the disease did not take any drugs, no history of trauma. family...