Nokea
Which of the following is considered a class IA Sodium Channel blocker?
- A. Mexiletine
- B. Amiodarone
- C. Quinidine
- D. Procainamide
Correct Answer: D
Rationale: The correct answer is D: Procainamide. Procainamide is a class IA antiarrhythmic drug that blocks sodium channels, prolonging the action potential duration. This helps to stabilize the heart's rhythm. Mexiletine (A) is a class IB antiarrhythmic drug that blocks sodium channels with fast recovery kinetics. Amiodarone (B) is a class III antiarrhythmic drug that prolongs repolarization by blocking potassium channels. Quinidine (C) is a class IA antiarrhythmic drug that also blocks sodium channels, but it is not a class IB sodium channel blocker like Procainamide.
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Which of the following is not a side effect of the ACE Inhibitor (Captopril)?
- A. Rash
- B. Angioedema
- C. Cough
- D. Congestion
Correct Answer: D
Rationale: The correct answer is D: Congestion. ACE Inhibitors like Captopril do not typically cause congestion as a side effect. The main reason is that ACE inhibitors work by dilating blood vessels, which helps reduce blood pressure and improve blood flow. Congestion is more commonly associated with conditions like allergies or upper respiratory infections.
A: Rash - Possible side effect of ACE inhibitors, but not specific to Captopril.
B: Angioedema - Rare but serious side effect of ACE inhibitors, including Captopril.
C: Cough - Common side effect of ACE inhibitors due to increased bradykinin levels.
Which of the following is the antidote for benzodiazepine toxicity?
- A. Flumazenil
- B. Methylene blue
- C. Deferoxamine
- D. Alkalinize urine
Correct Answer: A
Rationale: The correct answer is A: Flumazenil. Flumazenil is a specific benzodiazepine receptor antagonist that can reverse the effects of benzodiazepine toxicity by competitively inhibiting the binding of benzodiazepines to their receptors. It works by reversing the sedative and respiratory depressant effects of benzodiazepines. Methylene blue (B) is used to treat methemoglobinemia, not benzodiazepine toxicity. Deferoxamine (C) is used for iron toxicity. Alkalinizing urine (D) is used to enhance the excretion of weak acids in the urine, not for benzodiazepine toxicity.
A drug ending in the suffix (azole) is considered a ______.
- A. H
- B. ACE inhibitor
- C. Antifungal
- D. Beta agonist
Correct Answer: C
Rationale: The correct answer is C: Antifungal. Drugs ending in the suffix (azole) are commonly used to treat fungal infections. The suffix indicates that the drug belongs to the azole class, which specifically targets fungal pathogens by inhibiting their growth. Therefore, a drug ending in (azole) is classified as an antifungal medication.
Summary of other choices:
A: H - Incorrect. There is no pharmacological relevance to the suffix (azole) in relation to the letter H.
B: ACE inhibitor - Incorrect. Drugs ending in (pril) are commonly ACE inhibitors, not those ending in (azole).
D: Beta agonist - Incorrect. Drugs ending in (ol) or (olol) are typically beta agonists, not those ending in (azole).
Which of the following is the antidote for lead poisoning?
- A. Naloxone
- B. Nitrite
- C. CaEDTA
- D. Dialysis
Correct Answer: C
Rationale: The correct answer is C: CaEDTA. Calcium disodium ethylenediaminetetraacetic acid (CaEDTA) is a chelating agent used to treat lead poisoning by binding to lead ions in the bloodstream and enhancing their excretion through urine. It forms stable complexes with lead, reducing its toxicity. Naloxone (A) is an opioid receptor antagonist, used to reverse opioid overdose. Nitrite (B) is used in cyanide poisoning. Dialysis (D) is not effective in removing lead from the body as lead is not effectively dialyzable.
Which of the following conditions are not treated with Barbiturates?
- A. Seizures
- B. Hypotension
- C. Insomnia
- D. Anxiety
Correct Answer: B
Rationale: Barbiturates are central nervous system depressants used to treat seizures, insomnia, and anxiety. However, they can worsen hypotension as they can cause vasodilation and decrease blood pressure. Choice B is correct because using barbiturates in hypotensive patients can lead to further lowering of blood pressure, potentially causing harm. Choices A, C, and D are incorrect as barbiturates are commonly used to treat seizures, insomnia, and anxiety, respectively, due to their sedative and anticonvulsant properties.