Correct Answer: C

Rationale: The correct action the nurse should include for a client with thrombocytopenia is to provide a stool softener. Thrombocytopenia is a condition characterized by a low platelet count, which can lead to an increased risk of bleeding. Providing a stool softener helps prevent constipation, straining, and subsequent bleeding, which is crucial for clients with thrombocytopenia. Encouraging the client to floss daily (Choice A) is important for oral hygiene but not directly related to thrombocytopenia. Removing fresh flowers from the client's room (Choice B) is more related to infection control than managing thrombocytopenia. Avoiding serving raw vegetables (Choice D) is important for clients with compromised immune systems to reduce the risk of foodborne illnesses but is not directly related to thrombocytopenia management.

Correct Answer: B

Rationale: The correct answer is B: International normalized ratio (INR). When a client is on warfarin therapy, the INR is monitored regularly to assess the anticoagulant effects of the medication. A therapeutic INR range for most indications is between 2.0 to 3.0. Choices A, C, and D are not typically used to monitor the effect of warfarin. Platelet count assesses the number of platelets in the blood, PT measures the clotting time of plasma, and PTT evaluates the intrinsic pathway of coagulation.

Correct Answer: B

Rationale: The correct answer is B. Rifampin can cause a harmless reddish-orange discoloration of body fluids, including urine. Choice A is not related to rifampin; vision changes are not a common side effect of the medication. Choice C is more relevant to medications that cause photosensitivity reactions, not specifically rifampin. Choice D is incorrect because nausea is a common side effect of rifampin, but it does not warrant immediate discontinuation of the medication.

Correct Answer: D

Rationale: The correct answer is D. Calf pain on dorsiflexion following knee surgery may indicate a complication such as deep vein thrombosis, which is a serious condition requiring medical attention. Reporting this finding promptly is crucial to prevent further complications. Choices A, B, and C are within normal range for a client post knee surgery and do not typically indicate immediate complications that require urgent reporting.

Correct Answer: A

Rationale: The correct answer is A: 'A statement that participants can leave the study at will.' This information is crucial to include in the informed document to ensure that participants are aware of their right to withdraw from the study at any time without any negative consequences. Choice B is incorrect because participants should not be assigned to experimental or control groups without their knowledge and consent. Choice C is incorrect because disclosing a list of clients participating in the study violates confidentiality. Choice D is incorrect as the description of the data evaluation framework is important but not as critical as ensuring participants know they can leave the study at will.