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 C
Explanation
Placing eye shields over the newborn’s closed eyes. This is because phototherapy can cause eye damage and irritation to the newborn, so eye protection is essential.
Choice A is wrong because oil-based lotion can increase the absorption of heat and cause burns to the newborn’s skin.
Choice B is wrong because limiting the newborn’s intake of milk can cause dehydration and increase the risk of hyperbilirubinemia.
Choice D is wrong because changing the newborn’s position every 4 hours is not frequent enough to prevent pressure ulcers and ensure even exposure to the light.
Normal ranges for bilirubin levels in newborns are 1 to 12 mg/dL for term infants and 3 to 14 mg/dL for preterm infants. Phototherapy is usually indicated when the bilirubin level exceeds 15 mg/dL for term infants and 10 mg/dL for preterm infants.
Correct Answer is C
Explanation
Magnesium sulfate is given to women with preeclampsia and eclampsia to prevent and treat convulsions.
Magnesium sulfate is a mineral that reduces seizure risks in women with preeclampsia. A healthcare provider will give the medication intravenously. Sometimes, it’s also used to prolong pregnancy for up to two days. This allows drugs that speed up your baby’s lung development to be administered.
Choice A is wrong because magnesium sulfate does not improve patellar reflexes or increase respiratory efficiency. In fact, it may cause decreased or absent deep tendon reflexes and respiratory depression as side effects.
Choice B is wrong because magnesium sulfate does not shorten the duration of labor. It may actually prolong labor by inhibiting uterine contractions.
Choice D is wrong because magnesium sulfate does not prevent a boggy uterus or lessen the lochial flow. It has no effect on uterine tone or bleeding after delivery.
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