PEDIATRICS Vol. 74 No. 2 August 1984, pp. 315-316
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Vitamin K Deficiency in Infancy in Japan

TAKESHI NAGAO MD1 and KENTARO NAKAYAMA MD2

1 Division of Hematology, Kanagawa Children's Medical Center, Yokohama, Japan
2 Department of Pediatrics, Toho University, Tokyo, Japan

To the Editor.—

Lane et al1 reported a case of fatal intracranial hemorrhage in a normal infant who was retrospectively determined to have had vitamin K deficiency. This paper rings the alarm against the tendency toward cessation of routine prophylactic administration of vitamin K at birth for full-term infants. We support this opinion because there are many cases of intracranial hemorrhage due to "idiopathic" vitamin K deficiency in infancy in Japan and this may be related to abandonment of routine vitamin K administration at birth.