A nurse is caring for a newborn shortly after birth and places the newborn under a radiant warmer. Which of the following potential complications does this action help to prevent?
Cold stress
Thermogenesis
Shivering
Brown fat production
The Correct Answer is A
This action helps to prevent cold stress. This is because cold stress is a condition where the newborn's core temperature drops below 36.5°C and they use energy and oxygen to generate warmth. This can lead to hypoglycemia, metabolic acidosis, hypoxia, and an increased risk of infection.
Placing the newborn under a radiant warmer provides thermal stability and prevents heat loss by radiation.
Choice B is wrong because thermogenesis is the process of heat production, not a complication.
Choice C is wrong because shivering is a mechanism of heat production in adults, not in newborns.
Choice D is wrong because brown fat production is a normal feature of newborns that helps them generate heat by lipolysis.
Here is an image of a newborn under a radiant warmer.
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Related Questions
Correct Answer is D
Explanation
Precipitous birth
This is because precipitous birth, which is defined as a labor that lasts less than three hours from the onset of contractions to delivery, is a risk factor for postpartum hemorrhage. This is because the uterus may not contract well after a rapid delivery, leading to uterine atony and bleeding. Other risk factors for postpartum hemorrhage include uterine overdistension, oxytocin use, placental abruption, placenta previa, infection, coagulation disorders, and previous history of postpartum hemorrhage.
Choice A is not correct because gestational hypertension is not a risk factor for postpartum hemorrhage. It is a condition that causes high blood pressure during pregnancy and can lead to complications such as preeclampsia, eclampsia, and placental abruption³.
Choice B is not correct because small for gestational age newborn is not a risk factor for postpartum hemorrhage. It is a condition that indicates that the baby's growth was restricted in the womb and weighs less than 90% of other babies of the same gestational age. It can be caused by maternal factors, placental factors, or fetal factors⁴.
Choice C is not correct because a two-vessel umbilical cord is not a risk factor for postpartum hemorrhage. It is a condition that occurs when the umbilical cord has only one artery and one vein instead of the normal two arteries and one vein. It can be associated with congenital anomalies, intrauterine growth restriction, and stillbirth.
Correct Answer is D
Explanation
Injecting the medication into the vastus lateralis. This is because the vastus lateralis is a large muscle in the thigh that is suitable for intramuscular injections in newborns³. The vitamin K injection helps prevent vitamin K deficiency bleeding, which is a rare but serious condition that can cause bleeding in the brain or other organs¹. The American Academy of Pediatrics recommends that all newborns receive a single intramuscular dose of 0.5 to 1 mg of vitamin K within one hour of birth².
Choice A is wrong because a 21 gauge needle is too large for a newborn's muscle. A 25 or 27 gauge needle is more appropriate.
Choice B is wrong because injecting at a 45-degree angle may not reach the muscle tissue. A 90-degree angle is more appropriate.
Choice C is wrong because injecting 1cc of medication is too much for a newborn's muscle. The recommended dose of vitamin K is 0.5 to 1 mg, which is equivalent to 0.05 to 0.1 mL.
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