Pharmacology Assessment

20 learning units • 10 questions per unit • 200 explained questions

Module 18 — Antiprotozoal & Anthelmintic Drugs

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Question 01 • Single best answer

Why can P. vivax malaria relapse after effective blood-stage treatment?

A. Every blood-stage drug creates new mosquitoes B. Red cells become permanent bacterial reservoirs C. All antimalarials lack activity D. Dormant hepatic hypnozoites may persist

Question 02 • Single best answer

Which test is especially important before primaquine or tafenoquine use for radical cure?

A. Serum troponin in every patient as the only check B. Urinary glucose alone C. Blood group alone D. G6PD assessment

Question 03 • Single best answer

Why are artemisinin derivatives combined with an appropriate partner for uncomplicated falciparum malaria?

A. To sustain effective treatment and limit resistance selection B. To remove all need for diagnosis C. To cause intentional hemolysis D. To treat only intestinal worms

Question 04 • Single best answer

Which adverse effect is characteristic of quinine?

A. Cinchonism with tinnitus and related symptoms B. Permanent absence of insulin secretion in every patient C. Direct platelet P2Y12 blockade D. Universal severe hypercalcemia

Question 05 • Single best answer

Why is a luminal agent used after tissue-active treatment of invasive amoebiasis?

A. To reverse every drug allergy B. To eradicate organisms remaining in the intestinal lumen C. To stimulate erythropoiesis D. To treat dormant malaria hypnozoites

Question 06 • Single best answer

What is the principal action of albendazole?

A. Blocks human beta-1 receptors B. Inhibits gastric proton pumps C. Activates vitamin K recycling D. Impairs parasite microtubule function

Question 07 • Single best answer

Which parasite target is associated with ivermectin?

A. Glutamate-gated chloride channels B. Platelet cyclooxygenase C. Human insulin receptor D. Gastric H2 receptor

Question 08 • Single best answer

What is praziquantel's important mechanistic effect?

A. Suppression of human thyroid synthesis B. Increased parasite calcium permeability C. Direct inhibition of renal ENaC D. Reversal of opioid receptors

Question 09 • Single best answer

Why may treatment of a tissue parasite require management of inflammation?

A. Parasite death can provoke a host inflammatory response B. All anthelmintics are corticosteroids C. Treatment always eliminates swelling instantly D. Tissue parasites cannot trigger immunity

Question 10 • Single best answer

Why is folinic acid used with pyrimethamine-based toxoplasmosis treatment?

A. To neutralize gastric acid B. To block all drug absorption C. To treat hypoglycemia directly D. To reduce host folate-related marrow toxicity

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