A nurse is caring for a term macrosomic newborn whose mother has poorly controlled type 2 diabetes. The newborn has respiratory distress syndrome. The nurse should be aware that the most likely cause of the respiratory distress is which of the following?
Increased risk of anemia
Hyperinsulinemia
Increased blood viscosity
Brachial plexus injury
The Correct Answer is B
Choice A reason: Increased risk of anemia is not a likely cause of respiratory distress in a term macrosomic newborn, as it can affect any newborn regardless of the maternal diabetes status or the fetal size. Anemia can cause pallor, tachycardia, and poor feeding, but not respiratory distress.
Choice B reason: Hyperinsulinemia is a likely cause of respiratory distress in a term macrosomic newborn, as it results from the fetal exposure to high maternal glucose levels and the subsequent overproduction of insulin. Hyperinsulinemia can impair the synthesis of surfactant, which is a substance that prevents the alveoli from collapsing and facilitates gas exchange. Hyperinsulinemia can also cause hypoglycemia, which can affect the respiratory center and cause apnea.
Choice C reason: Increased blood viscosity is not a likely cause of respiratory distress in a term macrosomic newborn, as it can affect any newborn with polycythemia, which is an abnormally high number of red blood cells. Polycythemia can cause cyanosis, jaundice, and thrombosis, but not respiratory distress.
Choice D reason: Brachial plexus injury is not a likely cause of respiratory distress in a term macrosomic newborn, as it affects the nerves that supply the arm and hand, not the lungs. Brachial plexus injury can occur due to the excessive traction or stretching of the shoulder during delivery, and can cause weakness, paralysis, or sensory loss in the affected arm.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Thrombophlebitis is a condition where a blood clot forms in a vein and causes inflammation and pain. The risk factors for thrombophlebitis include immobility, dehydration, obesity, smoking, and cesarean birth. This client is not at increased risk for thrombophlebitis based on the information given.
Choice B reason: Retained placental fragments are pieces of the placenta that remain in the uterus after delivery and can cause bleeding, infection, or uterine subinvolution. The risk factors for retained placental fragments include placenta previa, placenta accreta, manual removal of the placenta, and incomplete separation of the placenta. This client is not at increased risk for retained placental fragments based on the information given.
Choice C reason: Puerperal infection is an infection of the reproductive tract that occurs within six weeks after delivery and can cause fever, malaise, abdominal pain, and foul-smelling lochia. The risk factors for puerperal infection include prolonged rupture of membranes, prolonged labor, multiple vaginal examinations, operative delivery, and retained placental fragments. This client is not at increased risk for puerperal infection based on the information given.
Choice D reason: Uterine atony is a condition where the uterus fails to contract and retract after delivery and can cause excessive bleeding, hypovolemic shock, and hemorrhage. The risk factors for uterine atony include overdistension of the uterus, prolonged labor, oxytocin use, anesthesia, and trauma. This client is at increased risk for uterine atony due to the large size of the newborn, which can overstretch the uterus and impair its ability to contract.
Correct Answer is B
Explanation
Choice A reason: Increased subcutaneous fat is not a typical finding in a newborn who was born at 42.5 weeks of gestation, because it is more characteristic of a term or preterm newborn. A postterm newborn tends to have less subcutaneous fat, and may appear thin and wasted.
Choice B reason: Dry, cracked skin is a common finding in a newborn who was born at 42.5 weeks of gestation, because the skin has been exposed to the amniotic fluid for a prolonged period. The skin may also appear peeling, wrinkled, or leathery.
Choice C reason: Scant scalp hair is not a usual finding in a newborn who was born at 42.5 weeks of gestation, because it is more characteristic of a preterm newborn. A postterm newborn tends to have more scalp hair, and may also have long nails and abundant lanugo.
Choice D reason: Copious vernix is not a specific finding in a newborn who was born at 42.5 weeks of gestation, because it is more characteristic of a term or preterm newborn. A postterm newborn tends to have little or no vernix, which is a white, cheesy substance that protects the skin in utero.
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