A nurse is caring for a child who has a urinary tract infection. Which of the following findings should the nurse expect?

The correct answer is choice C. 6.8 to 7.7 kg (15 to 17 lb).

Choice A rationale:

This weight range is above the average for a 6-month-old infant. According to growth charts, the 50th percentile weight for a 6-month-old male is approximately 7.9 kg (17 lb 8 oz), and for a female, it’s about 7.3 kg (16 lb 1 oz). Therefore, 8.6 to 9.5 kg would be considered above average and not the anticipated weight for most infants.

Choice B rationale:

This weight range is below the average for a 6-month-old infant. The average weight at 6 months is significantly higher than 4.1 to 5 kg, as infants are expected to double their birth weight by 5 months of age. Therefore, an infant weighing between 9 to 11 lb at 6 months would be considered underweight.

Choice C rationale:

This weight range is within the average for a 6-month-old infant. As mentioned, the 50th percentile weights for 6-month-old infants are approximately 7.9 kg for males and 7.3 kg for females. This choice falls within the expected weight gain trajectory where an infant is anticipated to double their birth weight by 5 months and then gain an additional pound or so by 6 months.

Choice D rationale:

This weight range is significantly above the average for a 6-month-old infant. It is well above the 95th percentile for this age group and would be considered unusual without underlying health conditions that could contribute to such a weight at this age. An infant weighing between 23 to 25 lb at 6 months would be exceptionally rare and likely indicative of an abnormal growth pattern.

Choice A rationale:
Placing the infant in a supine position during naps might not be the best action for an infant with heart failure. In heart failure, infants often experience difficulty breathing due to fluid accumulation in the lungs. Placing the infant in a more upright position, such as semi-Fowler's, can help alleviate some of this respiratory distress.
Choice B rationale:
Feeding the infant a bottle every 4 hours is important, but it might not directly address the immediate concerns of an infant with heart failure. Infants with heart failure might have difficulty feeding due to fatigue and respiratory distress. Feeding smaller, more frequent meals and assessing the infant's feeding tolerance is crucial.
Choice C rationale:
Correct Answer. Documenting the infant's respiratory rate every 2 hours is an important action. Infants with heart failure often have respiratory distress and an increased respiratory rate, as the body tries to compensate for decreased cardiac output. Documenting the respiratory rate will help the healthcare team monitor the infant's condition and assess the effectiveness of interventions.
Choice D rationale:
Withholding digoxin if the infant's heart rate is greater than 100/min is not necessarily the correct action. Digoxin is a medication commonly used in heart failure to improve cardiac contractility. While it's important to monitor the infant's heart rate, a heart rate of greater than 100/min might be due to the body's compensatory mechanisms in response to heart failure. Withholding the medication without consulting a healthcare provider might not be appropriate.