Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
The nurse administers vitamin K to the newborn for which reason?
A. Most mothers have a diet deficient in vitamin K, which results in the infant’s being deficient.
This 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.
B. Vitamin K prevents the synthesis of prothrombin in the liver and must be given by injection.
This 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.
C. Bacteria that synthesize vitamin K are not present in the newborn’s intestinal tract.
Bacteria that synthesize vitamin K are 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.
D. The supply of vitamin K is inadequate for at least 3 to 4 months, and the newborn must be supplemented.
This 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.
This question is an excerpt from Nurse Dive's nursing test bank - OB Pediatric Cumulative Exam Test 4 V 1 2023 Proctored Exam. Take the full exam now
Full Explanation
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.
Similar Questions
An Apgar score of 10 at 1 minute after birth would indicate a(n):
A. Infant having no difficulty adjusting to extrauterine life and needing no further testing.
This is wrong because an Apgar score of 10 at 1 minute does not mean that the infant needs no further testing. The infant should still be assessed again at 5 minutes and monitored for any signs of distress or complications.
B. Infant in severe distress who needs resuscitation.
This is wrong because an Apgar score of 10 at 1 minute does not indicate an infant in severe distress who needs resuscitation. An Apgar score of 0 to 3 would indicate a concerning condition that may require immediate intervention.
C. Prediction of a future free of neurologic problems.
This is wrong because an Apgar score of 10 at 1 minute does not predict a future free of neurologic problems. The Apgar score alone cannot be considered as evidence of, or a consequence of, asphyxia or brain injury; it does not predict individual neonatal mortality or neurologic outcome; and it should not be used for that purpose. Normal ranges for each criterion are as follows: • Appearance (color): pink all over (2 points), body pink but extremities blue (1 point), blue, bluish-gray, or pale all over (0 points) • Pulse (heart rate): greater than 100 beats per minute (2 points), less than 100 beats per minute (1 point), absent (0 points) • Grimace (response to stimulation): cough or sneeze, cry and withdrawal of foot with stimulation (2 points), facial movement/grimace with stimulation (1 point), absent (0 points) • Activity (muscle tone): active movement (2 points), limbs flexed (1 point), limp or floppy (0 points) • Respiration (breathing): good, strong cry (2 points), irregular, weak crying (1 point), absent (0 points)
D. Infant having no difficulty adjusting to extrauterine life but who should be assessed again at 5 minutes after birth.
An Apgar score of 10 at 1 minute after birth indicates that the infant is having no difficulty adjusting to extrauterine life but should be assessed again at 5 minutes after birth. The Apgar score is a scoring system that evaluates the health of newborns at 1 and 5 minutes after birth based on five criteria: appearance, pulse, grimace, activity, and respiration. Each criterion is scored from 0 to 2, and the total score ranges from 0 to 10. A score of 7 to 10 is considered reassuring, a score of 4 to 6 is moderately abnormal, and a score of 0 to 3 is concerning.
Full Explanation
An Apgar score of 10 at 1 minute after birth indicates that the infant is having no difficulty adjusting to extrauterine life but who should be assessed again at 5 minutes after birth. The Apgar score is a scoring system that evaluates the health of newborns at 1 and 5 minutes after birth based on five criteria: appearance, pulse, grimace, activity, and respiration. Each criterion is scored from 0 to 2, and the total score ranges from 0 to 10. A score of 7 to 10 is considered reassuring, a score of 4 to 6 is moderately abnormal, and a score of 0 to 3 is concerning.
Choice A is wrong because an Apgar score of 10 at 1 minute does not mean that the infant needs no further testing. The infant should still be assessed again at 5 minutes and monitored for any signs of distress or complications.
Choice B is wrong because an Apgar score of 10 at 1 minute does not indicate an infant in severe distress who needs resuscitation. An Apgar score of 0 to 3 would indicate a concerning condition that may require immediate intervention.
Choice C is wrong because an Apgar score of 10 at 1 minute does not predict a future free of neurologic problems. The Apgar score alone cannot be considered as evidence of, or a consequence of, asphyxia or brain injury; it does not predict individual neonatal mortality or neurologic outcome; and it should not be used for that purpose.
Normal ranges for each criterion are as follows:
- Appearance (color): pink all over (2 points), body pink but extremities blue (1 point), blue, bluish-gray, or pale all over (0 points)
- Pulse (heart rate): greater than 100 beats per minute (2 points), less than 100 beats per minute (1 point), absent (0 points)
- Grimace (response to stimulation): cough or sneeze, cry and withdrawal of foot with stimulation (2 points), facial movement/grimace with stimulation (1 point), absent (0 points)
- Activity (muscle tone): active movement (2 points), limbs flexed (1 point), limp or floppy (0 points)
- Respiration (breathing): good, strong cry (2 points), irregular, weak crying (1 point), absent (0 points)
A newborn is jaundiced and receivesphototherapy via ultraviolet bank lights.
An appropriate nursing intervention when caring for an infant with hyperbilirubinemia and receiving phototherapy by this method would be to:
A. Apply an oil-based lotion to the newborn’s skin to prevent drying and cracking.
This is wrong because oil-based lotion can increase the absorption of heat and cause burns to the newborn’s skin.
B. Limit the newborn’s intake of milk to prevent nausea, vomiting, and diarrhea.
This is wrong because limiting the newborn’s intake of milk can cause dehydration and increase the risk of hyperbilirubinemia.
C. Place eye shields over the newborn’s closed eyes.
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.
D. Change the newborn’s position every 4 hours.
Thisis 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.
Full 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.
Nurses can prevent evaporative heat loss in the newborn by:
A. Drying the baby after birth and wrapping the baby in a dry blanket.
This prevents evaporative heat loss, which occurs when water on the skin surface evaporates and cools the skin. Evaporative heat loss is especially significant in newborns because they are wet at birth and have a large surface area relative to their body mass.
B. Keeping the baby out of drafts and away from air conditioners.
This is wrong because it addresses convective heat loss, which occurs when air currents blow over the skin and carry away heat. Convective heat loss can be prevented by keeping the baby out of drafts and away from air conditioners.
C. Placing the baby away from the outside wall and the windows.
This is wrong because it addresses radiant heat loss, which occurs when heat radiates from the skin to cooler objects in the environment. Radiant heat loss can be prevented by placing the baby away from the outside wall and the windows.
D. Warming the stethoscope and the nurse’s hands before touching the baby.
This is wrong because it addresses conductive heat loss, which occurs when heat transfers from the skin to cooler objects in contact with the skin. Conductive heat loss can be prevented by warming the stethoscope and the nurse’s hands before touching the baby. Normal body temperature for a newborn is 36.5°C to 37.5°C (97.7°F to 99.5°F).
Full Explanation
Drying the baby after birth and wrapping the baby in a dry blanket
This prevents evaporative heat loss, which occurs when water on the skin surface evaporates and cools the skin. Evaporative heat loss is especially significant in newborns because they are wet at birth and have a large surface area relative to their body mass.
Choice B is wrong because it addresses convective heat loss, which occurs when air currents blow over the skin and carry away heat.
Convective heat loss can be prevented by keeping the baby out of drafts and away from air conditioners.
Choice C is wrong because it addresses radiant heat loss, which occurs when heat radiates from the skin to cooler objects in the environment.
Radiant heat loss can be prevented by placing the baby away from the outside wall and the windows.
Choice D is wrong because it addresses conductive heat loss, which occurs when heat transfers from the skin to cooler objects in contact with the skin.
Conductive heat loss can be prevented by warming the stethoscope and the nurse’s hands before touching the baby.
Normal body temperature for a newborn is 36.5°C to 37.5°C (97.7°F to 99.5°F).