A nurse is assessing a newborn whose mother had a primary cytomegalovirus (CMV) infection during pregnancy. The newborn acquired CMV transplacentally. Which of the following findings should the nurse expect the newborn to exhibit?
Cataracts
Hearing loss.
Macrosomia
Urinary tract infection (UTI)
The Correct Answer is B
The correct answer is choice **b. Hearing loss**.
Choice A rationale:
Cataracts are not a common finding in newborns with congenital CMV infection. Cataracts are more commonly associated with other congenital infections like rubella, toxoplasmosis, and herpes simplex virus (HSV).
Choice B rationale:
Hearing loss is one of the most common manifestations of congenital CMV infection. Up to 40-58% of infants with symptomatic congenital CMV infection develop sensorineural hearing loss, which can be unilateral or bilateral, and progressive over time.
Choice C rationale:
Macrosomia, or large birth size, is not a typical finding in congenital CMV infection. In fact, infants with symptomatic congenital CMV infection are more likely to be small for gestational age or have intrauterine growth restriction.
Choice D rationale:
Urinary tract infection (UTI) is not a common presentation of congenital CMV infection. CMV can cause inclusion bodies in the urine, but overt UTI is not a typical finding. More common manifestations include petechiae, hepatosplenomegaly, jaundice, and central nervous system involvement.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
The Moro reflex, also known as the startle reflex, is elicited by making a loud noise above the newborn, causing them to extend their arms and legs and then bringing them back to the body in a hugging motion. This reflex is a normal developmental response in term newborns.
Choice B rationale:
Touching the newborn's cheek with a finger elicits the rooting reflex, where the newborn turns their head toward the stimulus, searching for a nipple or object to suck. It is a different reflex and not the Moro reflex.
Choice C rationale:
Tapping the newborn's forehead with a finger does not elicit any specific reflex. This action is not related to the Moro reflex.
Choice D rationale:
Turning the newborn's head to one side elicits the asymmetric tonic neck reflex (ATNR), not the Moro reflex. In ATNR, when the head is turned to one side, the arm on that side extends while the opposite arm flexes.
Correct Answer is C
Explanation
The correct answer is Choice C.
Choice A rationale: Thiazide diuretics cause potassium and chloride loss, leading to metabolic alkalosis, not respiratory alkalosis. Hypokalemia decreases hydrogen ion excretion, increasing bicarbonate levels. Metabolic alkalosis is characterized by pH >7.45 and HCO₃⁻ >26 mEq/L rather than decreased PaCO₂.
Choice B rationale: Vomiting leads to metabolic alkalosis due to gastric acid loss. Hydrogen ion depletion increases bicarbonate concentration, shifting pH above normal. Arterial blood gases typically show increased HCO₃⁻ (>26 mEq/L) with a compensatory increase in PaCO₂ (>45 mmHg), not respiratory alkalosis.
Choice C rationale: Salicylate intoxication initially induces hyperventilation, reducing PaCO₂ levels below 35 mmHg and increasing pH above 7.45, leading to respiratory alkalosis. As toxicity progresses, metabolic acidosis may develop due to lactic acid accumulation, but early stages primarily present with respiratory alkalosis.
Choice D rationale: Hypoventilation leads to CO₂ retention, increasing PaCO₂ above 45 mmHg, forming carbonic acid (H₂CO₃) and causing respiratory acidosis. Blood gases show pH <7.35 with elevated PaCO₂, not respiratory alkalosis, which is caused by excessive CO₂ elimination through hyperventilation.
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