OBJECTIVE Newborns routinely receive vitamin K to prevent vitamin K deficiency bleeding. The efficacy of oral vitamin K administration may be compromised in infants with unrecognized cholestasis. We aimed to compare the risk of vitamin K deficiency bleeding under different prophylactic regimens in infants with biliary atresia. PATIENTS AND METHODS From Dutch and Danish national biliary atresi...

BACKGROUND AND OBJECTIVES Based on a high incidence of Vitamin K deficiency bleeding (VKDB) in breastfed infants with thus far unrecognized cholestasis, such as biliary atresia (BA), the Dutch regimen to prevent VKDB in breastfed infants was changed from a daily oral dosage of 25 µg to 150 µg vitamin K. Infants continued to receive 1 mg of vitamin K orally at birth. We compared the efficacy of ...

The use of sulfonamides in purified diets of rats has resulted in the production of vitamin deficiencies. The first identified deficiency thus induced was that of vitamin K produced by s’ulfaguanidine and succinyl sulfathiazole and was reported by Black et al. (1). It was plausible to postulate that this deficiency was a result of the inhibition by the sulfonamides of bacterial synthesis of vit...

Hyperemesis gravidarum can cause various vitamin deficiencies. Vitamin K deficiency can lead to coagulopathy or hemorrhagic diathesis. A nulliparous Japanese woman with hyperemesis gravidarum at 10(5/7) weeks was admitted with giant myoma, intestinal obstruction, and abdominal pain. Treatment for a degenerative myoma was instituted with intravenous antibiotics. The abdominal pain ameliorated, b...

Intracranial haemorrhage in early childhood is associated with a wide variety of causes such as trauma, vascular malformations (aneurysm and arteriovenous malformation), haemorrhagic infarction, brain tumours or blood coagulation disorders (congenital or acquired from coagulation factors). Vitamin K deficiency causes blood coagulation disturbances that can lead to intracranial haemorrhage [1]. ...

Vitamin K has important functions within the body, some of which are still being discovered. Research has shown that vitamin K is an anticalcification, anticancer, bone-forming and insulin-sensitising molecule. Recent data indicate that subclinical vitamin K deficiency is not uncommon. Additionally, vitamin K antagonists such as warfarin may cause detrimental side effects, which may partly be b...

A randomised clinical trial was conducted to establish the effects of oral and intramuscular administration of vitamin K at birth on plasma concentrations of vitamin K1, proteins induced by vitamin K absence (PIVKA-II), and clotting factors. Two groups of about 165 healthy breast fed infants who received at random 1 mg vitamin K1 orally or intramuscularly after birth were studied at 2 weeks and...