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.