Correct Answer: B

Rationale: Prothrombin time (PT) and international normalized ratio (INR) are essential laboratory tests to monitor the effectiveness of warfarin (Coumadin) therapy. These tests help assess the clotting time and the desired anticoagulant effect of the medication. Monitoring PT and INR levels is crucial to ensure that the client is within the therapeutic range, reducing the risk of bleeding or clotting complications associated with warfarin therapy. Platelet count (Choice A) measures the number of platelets in the blood and is not specific for monitoring warfarin therapy. Activated partial thromboplastin time (aPTT) (Choice C) is more commonly used to monitor heparin therapy, not warfarin. Fibrinogen level (Choice D) assesses the amount of fibrinogen in the blood and is not a specific test for monitoring warfarin therapy.

Correct Answer: A

Rationale: Administering calcium gluconate is the appropriate intervention for a client with hyperkalemia. Calcium gluconate helps stabilize the heart by counteracting the effects of high potassium levels and reducing the risk of cardiac complications in individuals with hyperkalemia. Choices B, C, and D are incorrect. Encouraging a diet high in potassium or providing potassium supplements would exacerbate hyperkalemia. Restricting sodium intake is not directly related to addressing hyperkalemia.

Correct Answer: B

Rationale: Initiating short, frequent contacts with the client is the most appropriate action to promote trust. This approach helps build trust and rapport, addressing the client's need for security. By maintaining regular contact, the nurse can provide reassurance and support, which can help alleviate the client's anxiety related to her delusional beliefs. Choice A does not directly address the client's need for trust and security. Choice C focuses on the client's illness but does not actively address building trust. Choice D, offering to keep the belongings at the nurse's desk, may not be well-received by the client and could potentially worsen her anxiety and distrust.

Correct Answer: B

Rationale: The correct instruction for the nurse to provide the client taking enalapril (Vasotec) is to report any persistent cough to their healthcare provider. Enalapril can cause a side effect of a persistent cough, and it is essential for the healthcare provider to be notified if this occurs to evaluate the need for a medication adjustment or change. Choices A, C, and D are incorrect. Increasing potassium-rich foods is not specifically related to enalapril use; there is no requirement to take enalapril with a full meal, and avoiding grapefruit juice is more relevant for medications metabolized by the CYP3A4 enzyme, not typically for enalapril.

Correct Answer: B

Rationale: Encouraging frequent rest periods is essential in managing hyperthyroidism as it helps address the fatigue and hypermetabolic state commonly associated with this condition. Rest is crucial to support the body's recovery and reduce the stress on the thyroid gland. While nutrition is important in managing hyperthyroidism, providing a high-calorie diet is not the priority intervention. Restricting fluid intake is not typically necessary unless there are specific indications such as heart failure. Administering a stool softener is not directly related to managing hyperthyroidism.