Indicate the CNS stimulant which is a piperidine derivative:

Correct Answer: A

Rationale: The correct answer is A: Meridil. Meridil is a CNS stimulant that is a piperidine derivative. Piperidine is a chemical structure that is present in the drug Meridil, making it the correct choice. Amphetamine (B) is not a piperidine derivative; it belongs to the phenethylamine class. Caffeine (C) is a xanthine derivative. Sydnophen (D) is not a piperidine derivative but a sympathomimetic amine. Therefore, based on the chemical structure and classification, Meridil is the only option that fits the criteria of being a piperidine derivative.

Correct Answer: D

Rationale: The correct answer is D: All of the above. Thiopental, etomidate, and propofol are commonly used intravenous agents for induction of anesthesia. They provide a faster onset and rate of recovery compared to inhaled anesthetics. Additionally, these agents do not provide conscious sedation but rather induce a state of unconsciousness for surgical procedures. Therefore, the correct answer is D as it encompasses all the unique characteristics of intravenous anesthetics compared to inhaled anesthetics.

Correct Answer: B

Rationale: Rationale: 1. Ethyl alcohol is a substance known to stimulate appetite, not decrease it. 2. Alcohol consumption often leads to increased hunger and overeating. 3. Therefore, the correct answer is B: FALSE. Summary: A: Incorrect - Ethyl alcohol does not decrease appetite. C: Incorrect - Ethyl alcohol does not decrease appetite for all individuals. D: Incorrect - Ethyl alcohol does have an impact on appetite.

Correct Answer: B

Rationale: The correct answer is B: Bleeding from fibrinolytic therapy. Aminocaproic acid is an antifibrinolytic agent that works by inhibiting the breakdown of blood clots. It is commonly used to manage excessive bleeding caused by fibrinolytic therapy, such as in cases of severe bleeding post-surgery or trauma. This drug helps to maintain clot stability and prevent further bleeding. Incorrect choices: A: Acute myocardial infarction - Aminocaproic acid is not indicated for the treatment of acute myocardial infarction. C: Heart failure - Aminocaproic acid is not used in the treatment of heart failure. D: Multiple pulmonary emboli - Aminocaproic acid is not typically used to treat multiple pulmonary emboli.

Correct Answer: D

Rationale: Rationale: Nifedipine is a dihydropyridine calcium channel blocker primarily used for hypertension and angina, not for cardiac arrhythmias. Bepridil, Diltiazem, and Verapamil are non-dihydropyridine calcium channel blockers that are effective in treating cardiac arrhythmias by slowing down the heart rate and controlling abnormal heart rhythms. Nifedipine does not possess significant antiarrhythmic properties compared to the other options, making it the incorrect choice for the treatment of cardiac arrhythmias.