Correct Answer: D

Rationale: The most important instruction for the nurse to include in the discharge teaching for a client with COPD receiving home oxygen therapy is to ensure the oxygen tank is stored in a secure upright position. This is crucial to prevent accidents such as leaks or falls that can lead to serious injury or damage. Choice A is incorrect as increasing the oxygen flow rate during physical activity without a healthcare provider's guidance can be harmful. Choice B is incorrect as smoking near an oxygen source can cause a fire hazard. Choice C is incorrect as petroleum jelly is flammable and should not be used around oxygen due to the risk of combustion.

Correct Answer: B

Rationale: Administering an analgesic before whirlpool therapy is the priority intervention in this scenario. Whirlpool therapy for debridement can be painful for the client with partial-thickness burns. Administering an analgesic before the procedure helps manage pain during the debridement process, ensuring the client's comfort. Applying a sterile dressing (Choice A) may be necessary after the whirlpool therapy but is not the immediate pre-transport intervention. Encouraging the client to drink fluids (Choice C) and ensuring nutritional needs are met (Choice D) are important aspects of care but are not specifically related to preparing the client for whirlpool therapy.

Correct Answer: C

Rationale: To infuse 100 mL in 45 minutes, the infusion rate should be set to 133 mL/hour (100 mL / 0.75 hours). This calculation is obtained by dividing the total volume to be infused by the total time for infusion (100 mL / 0.75 hours = 133 mL/hour). Therefore, choice C is the correct answer. Choices A, B, and D are incorrect because they do not accurately calculate the infusion rate required to deliver the medication within the specified time frame.

Correct Answer: B

Rationale: The correct answer is B because while the exact causes of depression in children are not fully understood, research indicates that children are more likely to experience depression if their parents have a major affective disorder. Choice A is incorrect because it suggests that the causes of major depression are entirely unknown, which is not accurate. Choice C is incorrect as there is no conclusive evidence that boys are more likely than girls to be depressed. Choice D is incorrect as the prevalence rate of depression is not necessarily higher in prepubescent children specifically.

Correct Answer: D

Rationale: Compressing the bulb with the tab open creates suction, which helps increase drainage into the JP drain. This action can aid in removing accumulated fluids from the surgical site. Reinforcing the incisional dressings and assessing behind the neck for drainage (Choice A) is not directly related to increasing drainage into the JP. Placing the client in a right lateral side-lying position and elevating the head of the bed (Choice B) may not directly impact drainage into the JP drain. Irrigating the JP tubing with 1 ml NSS and then closing the opening with its tab (Choice C) is unnecessary and could introduce contaminants into the drain.