Correct Answer: D

Rationale: The correct answer is the Wong-Baker Pain Scale. This scale is specifically designed for pediatric clients, including children as young as 3 years old, making it the most appropriate choice for a 4-year-old. It utilizes a simple visual scale with facial expressions that children can easily understand and use to express their pain levels. The FLACC and CRIES Pain Scales are also used for pediatric clients but are more focused on non-verbal cues and specific populations like infants or critically ill children. The McGill Pain Scale, on the other hand, is more complex and uses descriptive words, making it more suitable for adult clients who can better articulate their pain experiences.

Correct Answer: D

Rationale: Hyperemia is an excess of blood in a part of the body. The skin over a hyperemic area usually becomes reddened or warm. The condition is caused by increased blood flow, local relaxation of arterioles, or obstruction of the outflow of blood from an area. Choice A is incorrect because constriction of blood vessels would lead to decreased blood flow, not excess blood. Choice B is incorrect as an increased amount of bilirubin in the blood is related to jaundice, not hyperemia. Choice C is incorrect because increased perfusion of the surrounding tissues would cause redness, not hyperemia.

Correct Answer: D

Rationale: To best listen to breath sounds, the nurse should have the client sit, leaning slightly forward, with arms resting comfortably across the lap. The client should be instructed to breathe through the mouth a little deeper than usual, but to stop if feeling dizzy. The nurse should hold the flat diaphragm end piece of the stethoscope firmly against the client's chest wall. It is crucial to listen for at least one full respiration in each location on the chest to assess breath sounds accurately. Side-to-side comparison is essential in breath sound assessment. Therefore, options A, B, and C are incorrect as they do not align with the correct procedure for listening to breath sounds.

Correct Answer: B

Rationale: The correct developmental milestone for a 6-month-old child that should be screened during a routine office visit is rolling over. At this age, infants typically start rolling over from their stomach to their back and vice versa. Sitting up usually occurs between 7 and 8 months, creeping between 9 and 10 months, and standing while holding something between 8 and 10 months. Therefore, choices A, C, and D are developmentally appropriate but not typically expected at 6 months of age.

Correct Answer: C

Rationale: Dextrose concentrations below 10% are considered safe for administration through a peripheral IV, as concentrations above this threshold can lead to phlebitis, causing inflammation of the vein. Concentrations above 10% should not be administered through a peripheral IV to prevent vein irritation. Choice A is incorrect because concentrations above 20% are too high for a peripheral IV. Choice B is incorrect as dextrose concentrations below 5% are too low to be effective. Choice D is incorrect because the statement is reversed, suggesting that concentrations above 5% are safe, which is not true.