Indicate the antipsychotic drug ,which is a butyrophenone derivative:

Correct Answer: A

Rationale: Step-by-step rationale: 1. Butyrophenone derivatives are a class of antipsychotic drugs. 2. Droperidol is a butyrophenone derivative, used for sedation and treating psychosis. 3. Thioridazine, Sertindole, and Fluphenazine are not butyrophenone derivatives. 4. Therefore, the correct answer is A, Droperidol. In summary: - A (Droperidol) is correct as it belongs to the butyrophenone derivative class. - B (Thioridazine), C (Sertindole), and D (Fluphenazine) are incorrect as they are not butyrophenone derivatives.

Correct Answer: D

Rationale: The correct answer is D because benzodiazepines have a high therapeutic index, allowing for a wide margin of safety in dosing. Flumazenil can be used to reverse benzodiazepine overdose. Physiologic dependence can develop with long-term benzodiazepine use, indicating a potential for addiction. Therefore, all of the above factors play a role in the choice of benzodiazepines for anxiety. Choices A, B, and C individually do not encompass all the important considerations for prescribing benzodiazepines.

Correct Answer: D

Rationale: The correct answer is D because the early stage of cannabis intoxication typically includes euphoria, uncontrolled laughter, alteration of time sense, depersonalization, and sharpened vision. Euphoria and uncontrolled laughter are common effects of cannabis, while alteration of time sense and depersonalization are also frequently reported. Sharpened vision may occur due to the impact of cannabis on sensory perception. Therefore, all of the above symptoms are characteristic of the early stage of cannabis intoxication. Choices A, B, and C are incorrect because they do not encompass the full range of symptoms commonly associated with cannabis intoxication.

Correct Answer: B

Rationale: The correct answer is B: Increased myocardial demands for oxygen. Theophylline is a bronchodilator that works by relaxing the smooth muscles in the airways. This relaxation can lead to increased heart rate and contractility, causing the heart to work harder and increasing its demand for oxygen. Bradycardia (choice A) is not a common side effect of Theophylline. Depression of the respiratory center (choice C) is also not a typical side effect, as Theophylline is a respiratory stimulant. Elevation of arterial blood pressure (choice D) is not directly caused by Theophylline but can occur as a secondary effect due to increased heart rate and contractility.

Correct Answer: D

Rationale: Rationale for why the correct answer is D (Constipation): 1. Iron supplements commonly cause constipation due to their effect on the gastrointestinal tract. 2. Iron slows down bowel movements and can lead to difficulty passing stool. 3. Constipation is a recognized adverse effect of oral iron therapy in medical literature. 4. Other choices are not directly related to iron therapy - anemia is treated with iron, thrombocytopenia is a low platelet count, and headache is not a common side effect of iron supplements.