Correct Answer: D

Rationale: Administering the medication is appropriate for a stable lithium level of 0.8 mEq/L. A level of 0.8 mEq/L falls within the therapeutic range for lithium, indicating that the client is receiving an adequate dose to maintain therapeutic effects. Withholding the next dose, increasing the dosage, or discontinuing the medication would not be indicated at this lithium level as it is within the desired range for therapeutic benefit. Therefore, the correct action would be to continue administering the medication to ensure the client maintains the therapeutic level of lithium.

Correct Answer: C

Rationale: The correct answer is C: 'Use a Z-track technique to administer the injection.' When administering IM injections, using a Z-track technique helps prevent medication from leaking into subcutaneous tissues. This technique involves pulling the skin laterally, injecting the medication deeply into the muscle, and then releasing the skin. Choice A is incorrect because massaging the injection site after administering the medication can lead to increased blood flow and potential leakage of the medication. Choice B is incorrect as the needle should typically be inserted at a 90° angle for IM injections to ensure proper delivery into the muscle. Choice D is incorrect as aspirating for blood before injecting the medication is not routinely recommended for IM injections.

Correct Answer: C

Rationale: The correct answer is to instruct the client to take one nitroglycerin sublingual tablet every 5 minutes until the pain is relieved, up to three doses. This dosing regimen is essential for managing angina attacks effectively. Choice A is incorrect because nitroglycerin sublingual tablets should be placed under the tongue for rapid absorption, not taken with food. Choice B is incorrect because nitroglycerin tablets should be stored in their original container at room temperature, away from moisture and heat. Choice D is incorrect because nitroglycerin typically does not cause drowsiness as a side effect.

Correct Answer: A

Rationale: The correct answer is to instruct the client to take furosemide with a full glass of water in the morning. Furosemide is a diuretic that can cause increased urination, so it is best taken earlier in the day to avoid disrupting sleep with nocturia. Choice B is not the priority instruction for furosemide. Choice C is incorrect as taking furosemide at bedtime can lead to nocturia, which is undesirable. Choice D is incorrect because furosemide can be taken with or without food.

Correct Answer: A

Rationale: The correct answer is A: Platelet count. Platelet count helps assess clotting abnormalities that could cause petechiae and ecchymoses. Petechiae and ecchymoses are often associated with bleeding disorders, so it is crucial to evaluate the platelet count to determine if there is a deficiency in platelets. Choices B, C, and D are incorrect because potassium level, creatinine clearance, and prealbumin do not directly relate to assessing clotting abnormalities associated with petechiae and ecchymoses.