Phytonadione (Vitamin K1): Nursing pharmacology

Vitamin K1, is a fat-soluble vitamin that helps regulate the process of blood coagulation. Vitamin K is found in abundance in green leafy food, like spinach, kale, and chard; and it’s also produced by the gastrointestinal microbial flora.

Neonates are particularly susceptible to vitamin K deficiency because breast milk is low in vitamin K. In addition, there is an absence of gastrointestinal flora at birth that synthesize vitamin K.

Moreover, the newborn's immature liver is less able to produce coagulation factors.Now, vitamin K deficiency results in impaired coagulation cascade and blood clotting formation.

This can potentially lead to hemorrhage, or vitamin K deficiency bleeding or VKDB for short, which is a condition previously known as hemorrhagic disease of newborn.

VKDB is most likely to occur between days 1 and 7 of life; by day 7, most healthy newborns start producing their own vitamin K.

Vitamin K deficiency in newborns can be prevented by giving phytonadione, also known as vitamin K1, which is the most active form of vitamin K.

Phytonadione is administered intramuscularly in the newborn setting, typically within one hour after birth. Once administered, phytonadione acts as a cofactor to an enzyme found in the liver called gamma glutamyl-carboxylase, which converts the inactive forms of coagulation factors II, VII, IX, and X into their active forms.Now, IM administration phytonadione to a newborn may have potential side effects.

The most common ones include pain and erythema at the injection site, as well as a skin rash or urticaria.Other potential side effects include hypersensitivity reactions, as well as hyperbilirubinemia, which is more likely to occur in premature infants.Before administering phytonadione to a newborn, there are a number of nursing considerations to keep in mind.

First, educate the newborn’s family about why the medication is needed. Explain how during the first week of life, newborns are at risk for bleeding because their gastrointestinal tract hasn’t yet begun producing the vitamin K needed by the liver to make certain coagulation factors.

Be sure to address any questions or concerns they may have. During administration, stabilize the infant’s leg to prevent injury.

It may be helpful to have the mother hold or breastfeed the infant during the injection, because this can provide comfort and ease the infant’s pain.

Alternatively, provide comfort measures such as non-nutritive sucking or pain management using oral sucrose. Then, administer the medication in the vastus lateralis muscle located between the greater trochanter and the lateral femoral condyle.

After administration, provide additional comfort measures, as needed, and monitor the infant for any bleeding, edema, inflammation or rash at the injection site.

Also assess for signs of jaundice such as yellowing of the skin or eyes, especially in premature infants. Then, document the procedure in the newborn’s medical record.

While caring for the newborn, continue to monitor for bleeding from the puncture site, the umbilicus, and if needed, from the circumcision site.All right, as a quick recap, vitamin K1 is a fat-soluble vitamin that helps regulate the process of blood coagulation.

Neonates are susceptible to vitamin K deficiency because breast milk is low in vitamin K, there is an absence of gastrointestinal flora at birth that synthesizes vitamin K needed for vitamin K-dependant coagulation factors, and the newborn’s immature liver is less able to produce coagulation factors.

Vitamin K deficiency can lead to VKDB, but this can be prevented by giving newborns phytonadione intramuscularly, typically within the first hour of life.

Potential side effects include pain and erythema at the injection site, as well as skin rash or urticaria, and in premature infants it may increase the risk of hyperbilirubinemia.

Parents should be educated on the purpose and importance of vitamin K administration to prevent