How long does it take in newborn infants for establishment of vitamin K-producing bacteria in the intestinal tract?

Question

Quizplus · Accepted Answer

It takes approximately 2 weeks for establishment of vitamin K-producing bacteria in the intestinal tract of newborn infants. Until then, infants are at risk for vitamin K deficiency bleeding. This is why it is recommended that newborns receive a vitamin K injection shortly after birth to prevent this condition.

How Long Does It Take in Newborn Infants for Establishment