title: [Late manifestation of vitamin K deficiency in breast fed infants].
abstract: Two breast fed infants had late manifestations of Vitamin K deficiency. No underlying disease was found in the first case. The second patient was found to have alpha 1-Antitrypsin deficiency (Pi type ZZ). The latter patient initially responded well to a single dose of vitamin K administered orally (3 mg). However, three weeks later, he was admitted to our hospital with severe intracranial hemorrhage due to severe vitamin K deficiency. Vitamin K requirements in infants and clinical characteristics of vitamin K deficiency in infants older than 1 week are discussed.
mesh_terms: D001780:Blood Coagulation Tests; D001942:Breast Feeding; D002543:Cerebral Hemorrhage / Q000209:etiology; D005260:Female; D006474:Hemorrhagic Disorders / Q000097:blood / Q000209:etiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D014812:Vitamin K / Q000627:therapeutic use; D014813:Vitamin K Deficiency / Q000097:blood / Q000175:diagnosis*
chemical_list: D014812:Vitamin K
vernacular_title: Späte Manifestation eines Vitamin-K-Mangels bei gestillten Säuglingen.