Correct Answer: A

Rationale: The correct answer is A: Prothrombin time (PT). Prothrombin time is monitored to assess the effectiveness of warfarin therapy. Warfarin is an anticoagulant medication that works by inhibiting the synthesis of vitamin K-dependent clotting factors, including factors II, VII, IX, and X. Monitoring the PT helps ensure that the client's blood is clotting within the desired therapeutic range to prevent complications such as recurrent DVT or excessive bleeding. Choices B, C, and D are incorrect because serum potassium, blood urea nitrogen, and white blood cell count are not directly related to monitoring warfarin therapy in a client with a history of DVT.

Correct Answer: A

Rationale: The correct answer is A: Health promotion. Health promotion focuses on empowering individuals to take control of their health by promoting healthy behaviors, lifestyles, and environments. It aims to prevent illnesses and enhance overall well-being. Choices B, C, and D are incorrect because they do not fully encompass the concept of empowering individuals to improve their health. Disease prevention specifically targets avoiding specific illnesses, rehabilitation focuses on restoring health after an illness or injury, and health education primarily involves imparting knowledge about health-related topics.

Correct Answer: A

Rationale: Health literacy refers to the ability to obtain, process, and understand basic health information and services necessary to make informed health decisions. It empowers individuals to navigate the healthcare system, understand medical instructions, and advocate for their own health needs. - Choice B, Health equity, is the concept of everyone having a fair opportunity to attain their full health potential and not being disadvantaged due to their social or economic status. - Choice C, Health disparity, refers to differences in health outcomes or access to healthcare between different populations, often influenced by social, economic, or environmental factors. - Choice D, Health promotion, involves efforts to enhance and protect the health of individuals and communities through education, behavior change, and public health initiatives.

Correct Answer: C

Rationale: The correct answer is C: Diarrhea. Ranitidine, which is used to treat peptic ulcer disease, can lead to gastrointestinal disturbances such as diarrhea. Choices A, B, and D are incorrect. Hypertension and hypotension are not common side effects of ranitidine. Constipation is also not a typical side effect associated with ranitidine use.

Correct Answer: C

Rationale: The correct answer is C. A male with a high LDL level (200 mg/dl) has a significant risk for cardiovascular disease. High levels of LDL cholesterol are associated with an increased risk of atherosclerosis and heart disease. Choices A, B, and D have serum cholesterol levels that are slightly elevated but are not as specific or directly linked to cardiovascular risk as high LDL levels. Therefore, the client with the high LDL level is at the greatest risk for cardiovascular disease.