Tick the drug used for influenza A prevention:

Correct Answer: B

Rationale: Influenza A prevention is primarily achieved through the use of antiviral medications. Rimantadine is the correct answer because it is a medication specifically used for the prevention and treatment of influenza A virus infections. Rimantadine works by inhibiting the replication of the influenza A virus, thus helping to prevent the onset of the illness. Acyclovir is used to treat herpes virus infections, not influenza. Saquinavir is a protease inhibitor used in the treatment of HIV infection, not influenza. Foscarnet is an antiviral medication used to treat certain viral infections like cytomegalovirus, herpes simplex virus, and varicella-zoster virus, but not influenza. In an educational context, understanding the correct medication for influenza A prevention is crucial for healthcare professionals to effectively manage and prevent the spread of the virus. It highlights the importance of proper medication selection based on the specific viral infection being targeted, showcasing the significance of pharmacological knowledge in clinical practice.

Correct Answer: B

Rationale: In this question from the ATI Pharmacology Across the Lifespan exam, the correct answer is B) Cisplatin, an anticancer drug belonging to inorganic metal complexes. Cisplatin is a platinum-containing chemotherapy drug that works by forming cross-links with DNA, ultimately leading to cell death. Its mechanism of action distinguishes it from the other options provided. A) Dacarbazine is an alkylating agent. C) Methotrexate is a folate antagonist. D) Vincristine is a vinca alkaloid. Educationally, understanding the classification of anticancer drugs based on their chemical structure is crucial for healthcare professionals to make informed decisions regarding treatment plans. Recognizing the specific properties of each drug allows for targeted therapies and minimizes adverse effects.

Correct Answer: C

Rationale: Crimean Congo hemorrhagic fever virus (CCHFV) is a tick-borne virus transmitted primarily by Hyalomma ticks, making it the most likely causative agent in a patient with a history of tick bite and symptoms of viral hemorrhagic fever (fever, bleeding). Hantavirus (A) is rodent-borne, Rift Valley virus (B) is mosquito-borne, and Marburg virus (D) is bat-associated, none of which align with tick transmission. Ross River virus (E) is mosquito-borne and not a hemorrhagic fever. Thus, CCHFV (C) is the correct answer.

Correct Answer: C

Rationale: Quinine with clindamycin (C) is safe and effective for malaria in pregnancy, especially for uncomplicated cases. Atovaquone-proguanil (A) lacks sufficient safety data, doxycycline (B) is contraindicated due to fetal bone/teeth effects, primaquine (D) risks hemolysis, and mefloquine (E) has teratogenic concerns—making C the best choice.

Correct Answer: B

Rationale: Reticulocytes (B) are immature RBCs released from bone marrow during active erythropoiesis, increasing with iron therapy in iron deficiency anemia. Myelocytes (A) are myeloid precursors, ring sideroblasts (C) indicate sideroblastic anemia, target cells (D) suggest liver/hemoglobinopathy, and megakaryoblasts (E) are platelet precursors—reticulocytes directly reflect erythropoiesis.