Serum vitamin K1 concentrations after oral administration of vitamin K1 in low birth weight infants

Sann, L.; Leclercq, M.; Guillaumont, M.; Trouyez, R.; Bethenod, M.; Bourgeay-Causse, M.

Journal of pediatrics 107(4): 608-611

1985


ISSN/ISBN: 0022-3476
PMID: 4045610
Document Number: 248210
A study reports the results of serial measurements of serum vitamin K levels in newborn low birthweight infants following an oral dose of 2.0 mg vitamin K. Peak serum levels resulted 6-12 hours after dosing with a 20-fold increase in the median level. The results indicate that normal or a high serum vitamin K can be achieved by the end of the first week in life, but it is notknown whether this dosage is sufficient to maintain normal serun vitamin K levels and normal coagulant activities later on. Prolonged blood clotting, especially in breast-fed infants, is due to vitamin K deficiency and supplementation in newborn infants must be recommended. (wz)

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