Correct Answer: B

Rationale: The correct answer is B: 'Records the highest of three readings.' When using a peak expiratory flow rate (PEFR) meter, the client should record the highest of three readings to ensure an accurate measurement of their peak expiratory flow rate. Inhaling rapidly, using the meter after taking a bronchodilator, or blowing out forcefully into the meter after a deep breath are not correct techniques for using a PEFR meter and may lead to inaccurate results.

Correct Answer: C

Rationale: The correct answer is C. Oxygen saturation levels below 95% indicate hypoxia and require immediate intervention. A heart rate of 88 beats per minute, a blood pressure of 100/60, and a respiratory rate of 16 are within normal ranges and do not require immediate intervention. Oxygen saturation is a critical parameter reflecting the client's oxygenation status.

Correct Answer: D

Rationale: The correct answer is D: Level of consciousness. When managing hepatic encephalopathy with lactulose, monitoring the client's level of consciousness is crucial as it is a key indicator of the therapeutic response to lactulose in reducing ammonia levels. Changes in consciousness can reflect the effectiveness of treatment and the progression of hepatic encephalopathy. Option A, percussion of the abdomen, is not directly related to evaluating the response to lactulose. Option B, blood glucose level, is important but not the priority in this context. Option C, serum electrolytes, while significant in liver disease, do not directly assess the impact of lactulose therapy on hepatic encephalopathy.

Correct Answer: A

Rationale: The correct answer is A: Frequent exercise and weight control. These should be emphasized as a goal for all diabetics because they help prevent complications and manage blood sugar levels. Regular physical activity and maintaining a healthy weight are crucial in managing diabetes as they can improve insulin sensitivity, regulate blood sugar levels, and reduce the risk of cardiovascular complications. Choice B, preventing eye damage, is important but is more specific to diabetic retinopathy and not a general goal for all diabetics. Choice C, keeping insulin refrigerated, is essential for insulin storage but not a primary goal for all diabetics. Choice D, preventing the development of complications, is too broad and does not provide a specific actionable goal for all diabetics.

Correct Answer: A

Rationale: The correct teaching the nurse should provide to a client prescribed an inhaled corticosteroid is to rinse the mouth with water after using the inhaler. This helps prevent oral fungal infections, a common side effect of inhaled corticosteroids. Choice B is incorrect because inhaled corticosteroids are usually used regularly, not just during asthma attacks. Choice C is incorrect as using the inhaler before exercise can actually help prevent exercise-induced bronchospasm. Choice D is incorrect because cleaning the inhaler with hot water after each use is not necessary and may damage the device.