A newborn's mother asks the nurse why Vitamin K is given to her newborn? The nurse explains that Vitamin K helps in:

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2015

Explanation

Vitamin K is essential for the synthesis of clotting factors II, VII, IX, and X in the liver, which are necessary for blood coagulation.
Newborns are born with a sterile gut and lack the intestinal flora that produce Vitamin K.
Vitamin K has poor placental transfer, leading to low reserves in the newborn at birth.
Administering Vitamin K prevents Vitamin K Deficiency Bleeding (VKDB), a potentially life-threatening condition.

Option B: Vitamin K does not directly promote gut maturation. The immaturity of the gut (being sterile) is the reason for the deficiency, but the vitamin itself does not mature the gut.
Option C: The immunization process involves stimulating the immune system to produce antibodies. Vitamin K is a nutrient involved in clotting, not immunity.
Option D: While severe bleeding in the brain (an intracranial hemorrhage, a complication of VKDB) can impair brain function, Vitamin K's primary role is not direct brain growth.

Clinical Relevance

Nursing practice connection: Knowing The rationale for prophylactic Vitamin K administration in newborns helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
It is a critical nursing responsibility to ensure that every newborn receives prophylactic Vitamin K as per hospital protocol to prevent VKDB.
Nurses play a key role in educating parents about the importance of Vitamin K, addressing their concerns, and obtaining informed consent.
What if a parent refuses the Vitamin K injection? The nurse must explain the risks of VKDB, including the potential for spontaneous internal bleeding, and document the refusal thoroughly. The primary healthcare provider must be notified, and the parents should be educated on the signs of bleeding to watch for.

How to Approach the Question

Identify the core subject of the question: the function of Vitamin K in a newborn.
Recall the key physiological facts about newborns: they have a sterile gut and limited reserves of certain nutrients.
Connect Vitamin K to its primary function in the body, which is its role in the synthesis of clotting factors.
Evaluate the options based on this knowledge. 'Coagulation of blood' is the direct and primary reason for administration.
Eliminate the other options by identifying their inaccuracies: gut maturation, immunization, and brain growth are not the direct functions of Vitamin K.

Concept Tested & Keywords

Concept Tested: The rationale for prophylactic Vitamin K administration in newborns.
Stem keywords: newborn, mother, Vitamin K
Lead-in keywords: helps in

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E6 Obstetrics Williams p. 16-33

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 pp. 1136-1138, 1137-1139

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