ATI RN
ATI Pharmacology Proctored
1. A drug ending in the suffix (pril) is considered a ______.
- A. H
- B. ACE inhibitor
- C. Antifungal
- D. Beta agonist
Correct answer: B
Rationale: Drugs with names ending in -pril are classified as angiotensin-converting enzyme (ACE) inhibitors. These medications are commonly used to manage conditions like high blood pressure, heart failure, and diabetic kidney disease by blocking the conversion of angiotensin I to angiotensin II, leading to vasodilation and decreased blood pressure.
2. Which of the following is considered a class IA Sodium Channel blocker?
- A. Mexiletine
- B. Amiodarone
- C. Quinidine
- D. Procainamide
Correct answer: D
Rationale: Procainamide is a class IA antiarrhythmic drug that acts as a sodium channel blocker by blocking fast sodium channels. Mexiletine is a class IB antiarrhythmic drug, not class IA. Amiodarone is a class III antiarrhythmic, and Quinidine is a class IA antiarrhythmic but not a sodium channel blocker.
3. Which of the following conditions are not treated with Barbiturates?
- A. Seizures
- B. Hypotension
- C. Insomnia
- D. Anxiety
Correct answer: B
Rationale: Hypotension is not treated with barbiturates. Barbiturates are primarily used for treating seizures, insomnia, and anxiety, but they are not indicated for the treatment of hypotension.
4. Which of the following is the antidote for Heparin toxicity?
- A. Protamine
- B. Methylene blue
- C. N-acetylcysteine
- D. Glucagon
Correct answer: A
Rationale: Protamine is the specific antidote for Heparin toxicity. Heparin is an anticoagulant medication, and if an overdose occurs or if there is excessive bleeding due to Heparin use, protamine, a positively charged molecule, can neutralize the anticoagulant effects of Heparin by forming a complex with it. This binding prevents Heparin from further inhibiting coagulation factors and helps in reversing its effects.
5. Which of the following drugs is associated with the reaction of Cinchonism?
- A. Valproic acid
- B. Quinidine
- C. Isoniazid
- D. Ethosuximide
Correct answer: B
Rationale: Cinchonism is associated with Quinidine, not Valproic acid, Isoniazid, or Ethosuximide. Cinchonism is characterized by symptoms such as tinnitus, dizziness, and headaches. Quinidine, being an antiarrhythmic agent, can lead to this condition as a side effect.
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