The nurse administers vitamin K to the newborn for which reason?
Most mothers have a diet deficient in vitamin K, which results in the infant’s being deficient.
Vitamin K prevents the synthesis of prothrombin in the liver and must be given by injection.
Bacteria that synthesize vitamin K are not present in the newborn’s intestinal tract.
The supply of vitamin K is inadequate for at least 3 to 4 months, and the newborn must be supplemented.
The Correct Answer is C
Bacteria that synthesize vitamin K is not present in the newborn’s intestinal tract. Vitamin K is essential for blood clotting, and newborns are at risk of bleeding problems due to their lack of vitamin K. Therefore, vitamin K is given by injection to prevent hemorrhagic disease in the newborn.
Choice A is wrong because most mothers do not have a diet deficient in vitamin K, and vitamin K deficiency in newborns is not related to the maternal diet.
Choice B is wrong because vitamin K does not prevent the synthesis of prothrombin in the liver, but rather enhances it. Prothrombin is a clotting factor that requires vitamin K for its production.
Choice D is wrong because the supply of vitamin K is not inadequate for at least 3 to 4 months, but rather for a few days until the newborn’s intestinal bacteria start producing it.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
“You may need to increase the caloric density of your infant’s formula.” This is because infants with heart failure have increased metabolic needs and may not be able to consume enough volume to meet their nutritional requirements. Increasing the caloric density of the formula can help them achieve adequate growth and development without overloading their heart.
Choice B is wrong because feeding the baby every 2 hours may cause fatigue and dehydration. Infants with heart failure should be fed every 3 to 4 hours or on demand.
Choice C is wrong because increasing the amount of formula may cause fluid retention and worsen heart failure. Infants with heart failure should be fed small, frequent amounts of formula.
Choice D is wrong because placing a nasal oxygen cannula on the infant during and after each feeding may not be necessary or beneficial. Oxygen therapy should be prescribed by a physician based on the infant’s oxygen saturation levels and clinical signs of hypoxia.
Correct Answer is C
Explanation
The patient is showing signs of magnesium toxicity, such as respiratory depression, hyporeflexia, and flushing.
Magnesium sulfate is a high-alert medication that can cause serious adverse effects if not monitored closely.
The nurse should stop the infusion immediately and notify the provider.
Choice A is wrong because calling for a stat magnesium sulfate level will not address the immediate problem of toxicity.
The nurse should act quickly to prevent further complications.
Choice B is wrong because administering oxygen will not reverse the effects of magnesium toxicity.
Oxygen may be helpful for respiratory distress, but it will not correct the underlying cause.
Choice D is wrong because hydralazine is an antihypertensive medication that lowers blood pressure.
The patient’s blood pressure is already within the normal range for a pregnant woman with preeclampsia (140-160/90-110 mm Hg).
Hydralazine may cause hypotension and fetal distress.
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