Correct Answer: A

Rationale: The correct instruction for using a peak flow meter is to place the mouthpiece in your mouth and blow out as quickly as you can. This action helps measure the peak expiratory flow of the client. Choice B is incorrect because exhaling slowly does not provide an accurate peak flow reading. Choice C is incorrect as taking a slow deep breath before blowing interferes with obtaining an accurate measurement. Choice D is incorrect as blowing at a steady rate for 3 seconds may not reflect the peak expiratory flow accurately.

Correct Answer: B

Rationale: The correct instruction that the nurse should include for a client prescribed hydrochlorothiazide is to increase their intake of potassium-rich foods. Hydrochlorothiazide is a diuretic that can lead to potassium depletion, so increasing potassium-rich foods helps prevent hypokalemia. Option A is incorrect because hydrochlorothiazide is usually taken in the morning to prevent diuresis at night. Option C is not necessary as hydrochlorothiazide can be taken with or without food. Option D is incorrect because hydrochlorothiazide is used to lower blood pressure, not increase it.

Correct Answer: D

Rationale: The correct answer is D. A blood glucose level of 180 mg/dL is higher than expected and should be reported to prevent hyperglycemia complications. High blood glucose levels can lead to hyperglycemia, causing various issues such as increased risk of infection and delayed wound healing. Choices A, B, and C are within normal limits for a client receiving continuous enteral feedings and do not require immediate reporting.

Correct Answer: C

Rationale: The correct answer is C. A potassium level of 2.8 mEq/L is low and should be reported to the provider. Furosemide can cause potassium depletion, leading to hypokalemia. Low potassium levels can result in cardiac dysrhythmias, which is a serious concern in clients with heart failure. Choices A, B, and D are within normal ranges and do not require immediate reporting. Sodium level of 140 mEq/L, heart rate of 82/min, and oxygen saturation of 95% are all acceptable findings.

Correct Answer: D

Rationale: The correct answer is D because enoxaparin should be injected into the abdomen to ensure proper absorption. Choice A is incorrect as enoxaparin should not be taken with food. Choice B is incorrect as enoxaparin should be injected subcutaneously, not into the muscle. Choice C is incorrect as massaging the injection site after administering enoxaparin is not recommended.