Correct Answer: B

Rationale: The correct instruction for a client learning to use a cane is to maintain two points of support on the ground at all times. This ensures better stability and reduces the risk of falls. Choice A is incorrect because advancing the cane and the weaker leg simultaneously may lead to imbalance. Choice C is incorrect because the cane should be used on the stronger side to provide support. Choice D is incorrect because there is no specific measurement for advancing the cane with each step, and the focus should be on maintaining stability.

Correct Answer: B

Rationale: Administering insulin as prescribed before meals is crucial for managing diabetes. This instruction is vital as it helps the client maintain blood sugar levels within the target range. Checking blood sugar levels once daily is important but not as critical as ensuring the timely administration of insulin. Taking medication only when feeling unwell is dangerous as it may lead to uncontrolled blood sugar levels. Eating carbohydrate-rich meals may actually destabilize blood sugar levels rather than stabilizing them, making it an incorrect choice.

Correct Answer: B

Rationale: The correct answer is B because inhaling deeply and slowly elevates the cylinder on the spirometer, promoting lung expansion. Choice A is incorrect as exhaling deeply before inhaling is not the correct technique for using an incentive spirometer. Choice C is incorrect as inhaling quickly through the spirometer does not promote optimal lung expansion. Choice D is incorrect as inhaling several short breaths does not facilitate the proper use of an incentive spirometer.

Correct Answer: D

Rationale: When a client expresses the desire to discontinue dialysis, the most appropriate response is to seek clarification and establish understanding. This approach allows the healthcare provider to comprehend the client's concerns, provide support, and engage in a collaborative decision-making process. Choice A, asking the client why they want to discontinue, can be perceived as confrontational and may not effectively address the underlying reasons. Instructing the client to focus on self-care (Choice B) may overlook the client's autonomy and decision-making capacity. Offering to call the provider to cancel dialysis (Choice C) does not actively involve the client in the decision-making process or address their concerns adequately.

Correct Answer: D

Rationale: A heart rate of 146/min is abnormal for a preschooler and indicates tachycardia, which should be reported to the provider. Choices A, B, and C fall within normal ranges for a preschooler's heart rate (80-120/min) and respiratory rate (22-34/min), so they do not require immediate reporting. Option D is the correct answer as it deviates significantly from the normal range and may indicate an underlying health issue that needs attention.