Flumazenil is used to:

Correct Answer: D

Rationale: Step-by-step rationale: 1. Flumazenil is a benzodiazepine antagonist used to reverse CNS depressant effects of benzodiazepine overdose. 2. It can hasten recovery following use of benzodiazepines in anesthetic and diagnostic procedures. 3. It can also reverse benzodiazepine-induced respiratory depression. 4. Therefore, the correct answer is D as it encompasses all the uses of flumazenil. Other choices are incorrect as they do not cover all the indicated uses.

Correct Answer: C

Rationale: Fepranone is the correct answer because it is a medication used to suppress appetite, not stimulate it. Vitamins are essential nutrients, bitters can stimulate appetite, and insulin regulates blood sugar but can also stimulate appetite. Therefore, Fepranone is the only drug in the list that does not stimulate appetite.

Correct Answer: A

Rationale: Step-by-step rationale for why Aminocaproic acid (A) is the correct answer: 1. Aminocaproic acid is a fibrinolytic inhibitor that prevents the breakdown of blood clots. 2. It works by inhibiting the activation of plasminogen to plasmin, which is essential for clot dissolution. 3. Therefore, Aminocaproic acid belongs to the class of fibrinolytic inhibitors. Summary of why the other choices are incorrect: - Ticlopidine (B) is a platelet aggregation inhibitor, not a fibrinolytic inhibitor. - Streptokinase (C) is a fibrinolytic drug that promotes clot breakdown, not an inhibitor. - Vitamin K (D) is essential for clotting factors synthesis, not a fibrinolytic inhibitor.

Correct Answer: B

Rationale: Verapamil is a calcium channel blocker that decreases heart rate by blocking L-type calcium channels in the heart. Choice B, stating it increases heart rate, is incorrect. Verapamil relaxes coronary artery smooth muscle (Choice C) and depresses cardiac contractility (Choice D), making them true statements. So, the correct answer is B as it contradicts the pharmacological effects of verapamil.

Correct Answer: C

Rationale: The correct answer is C: Decreasing of heart work. Beta-blockers reduce blood pressure by decreasing the heart's workload through blocking the effects of adrenaline on the heart, resulting in lowered heart rate and force of contraction. This reduces the amount of blood pumped by the heart, leading to decreased blood pressure. The other choices are incorrect because: A: Peripheral vasodilatation - Beta-blockers actually cause vasoconstriction, not vasodilatation. B: Diminishing of blood volume - Beta-blockers do not directly affect blood volume. D: Depression of vasomotor center - Beta-blockers primarily act on the heart, not the vasomotor center.