Choice A rationale
If the child is sleeping now and is difficult to wake, this could be a sign of worsening respiratory status. Children with respiratory distress often have difficulty sleeping due to discomfort and difficulty breathing. If the child is now sleeping and difficult to wake, this could indicate a decrease in oxygen levels, leading to lethargy and decreased responsiveness. This would require immediate attention.
Choice B rationale
The vital signs provided indicate a potentially serious situation. A heart rate of 130 beats/minute is high for a 3-year-old child, indicating that the heart is working harder to pump blood. A respiratory rate of 15 breaths/minute is on the lower end of normal for a 3-year-old, which could indicate that the child is not getting enough oxygen. An oxygen saturation of 66% on a 5L face mask is dangerously low, indicating severe hypoxia. A temperature of 102.8° F(39.3° C) axillary indicates a fever, which could be a sign of infection. A blood pressure of 92/48 mm Hg is within normal range for a 3-year-old.
Choice C rationale
If the child is active and playing with toys, this could indicate that his respiratory status is not worsening. Children who are experiencing respiratory distress often have difficulty engaging in normal activities due to discomfort and shortness of breath. If the child is able to play normally, this could indicate that he is getting enough oxygen and his condition is stable.
Choice D rationale
If the child’s breathing has returned to normal, this could indicate that his respiratory status is improving. However, it’s important to continue monitoring the child closely, as respiratory conditions can change rapidly, especially in young children.

Choice A rationale
Monitoring the capillary refill of the toes is crucial when a child has a long-leg cast applied. This is because it helps assess the adequacy of circulation to the foot, which can be compromised by the cast. If the capillary refill is delayed (more than 2 seconds), it could indicate poor blood flow to the area, which could lead to serious complications such as tissue necrosis.
Choice B rationale
Comparing the temperature of both legs can provide information about circulation and inflammation. However, it is not the most important action in this case. While a significant difference in temperature could indicate a problem, it is not as direct an indicator of circulatory status as capillary refill.
Choice C rationale
Observing for spontaneous movement can provide information about nerve function. If the child is not moving the toes, it could indicate nerve damage. However, lack of movement could also be due to discomfort from the cast and is not as direct an indicator of circulatory status as capillary refill.
Choice D rationale
Checking the femoral pulses can provide information about circulation to the leg. However, the femoral pulse is proximal to the cast and may not accurately reflect circulation to the foot. Therefore, it is not the most important action in this case.