Correct Answer: B

Rationale: To calculate the corrected age of a premature child, you need to adjust for the weeks of prematurity. In this case, the child was born at 30 weeks gestation. From May 2, 2014, to August 5, 2014, is a span of 14 weeks. Subtracting the 30 weeks of gestation from the total time passed (14 weeks) gives the corrected age, which is 14 - 30 = -16 weeks. Since negative weeks are not relevant here, the corrected age is 0 weeks, which is equivalent to 2 weeks.

Correct Answer: A

Rationale: When a child's respirations are slow and shallow due to opioid administration, it results in hypoventilation. This leads to retaining carbon dioxide, indicated by an increased PCO2 level on arterial blood gas analysis, and subsequently causes respiratory acidosis due to the buildup of CO2 in the blood.

Correct Answer: A

Rationale: Low-grade fever, malaise, and muscle aches are common reactions. Acetaminophen usually alleviates these problems. MMR is a live vaccine but it is attenuated or completely avirulent and does not cause measles in healthy children, only immunocompromised children.

Correct Answer: A

Rationale: The child with tachypnea and pulmonary congestion should be seen first as these symptoms indicate a more severe form of fluid-volume excess that requires immediate attention. Tachypnea is an increase in respiratory rate, which could be a sign of respiratory distress, and pulmonary congestion indicates fluid accumulation in the lungs, posing a significant risk to the child's respiratory function.

Correct Answer: C

Rationale: When administering an immunization to a four-year-old child, it is important to use a 24-gauge needle to minimize pain and discomfort for the child. Thicker needles can cause more pain and tissue trauma. Using a thinner needle like a 24-gauge is appropriate for pediatric immunizations. The other options are not recommended practices: placing the child in a prone position is not ideal for immunization administration, it is beneficial to have the caregiver present for support, and aspirating before administering the immunization is not required for intramuscular injections in current practice.