Which medication is a COX-2 enzyme blocker?

Correct Answer: B

Rationale: The correct answer is B: Celecoxib. Celecoxib is a COX-2 enzyme blocker, specifically designed to inhibit the COX-2 enzyme responsible for inflammation and pain. This selective action reduces the risk of gastrointestinal side effects commonly associated with non-selective NSAIDs like Diclofenac, Ibuprofen, and Naproxen, making Celecoxib a preferred choice for patients with a history of gastric ulcers or other gastrointestinal issues. Diclofenac (A), Ibuprofen (C), and Naproxen (D) are non-selective NSAIDs that inhibit both COX-1 and COX-2 enzymes, increasing the risk of gastrointestinal complications.

Correct Answer: A

Rationale: The correct answer is A: Cyclophosphamide. Cyclophosphamide is an alkylating agent that can cause cellular changes in the cervix, leading to false positive pap test results. Methotrexate, Leflunomide, and Adalimumab do not typically affect pap test results. Therefore, Cyclophosphamide is the most likely medication to cause a false positive pap test due to its known effects on cervical cells.

Correct Answer: A

Rationale: The correct answer is A because the statement "I don’t need to go to the hospital after using it" indicates a misunderstanding of the seriousness of anaphylaxis, which requires immediate medical attention. - Choice B is correct as carrying two autoinjectors is recommended in case the first one malfunctions or a second dose is needed. - Choice C is correct as it demonstrates proper medication management by noting the expiration date. - Choice D is incorrect as injecting through clothes is acceptable in emergencies to save time. In summary, choice A is incorrect as it shows a lack of understanding of the need for further medical care after using an epinephrine autoinjector.

Correct Answer: C

Rationale: The correct answer is C: Hypochromic, microcytic. In iron deficiency anemia, there is a decrease in hemoglobin content (hypochromic) and a decrease in red blood cell size (microcytic) due to insufficient iron for hemoglobin synthesis. Normochromic (choice A) and normocytic (choice B) would not be characteristic of iron deficiency anemia. Hypochromic, macrocytic (choice D) is more indicative of a different type of anemia, such as megaloblastic anemia caused by vitamin B12 or folate deficiency.

Correct Answer: C

Rationale: The correct answer is C because the complement system enhances phagocytosis by opsonization, making it easier for phagocytes to engulf and destroy pathogens. Option A is incorrect as the complement system is not part of adaptive immunity. Option B is incorrect as antibodies are part of the humoral immune response, not the complement system. Option D is incorrect as the complement system consists of proteins, not enzymes.