ATI RN
Pharmacology Cardiovascular Drugs Review Questions
Question 1 of 5
Most of drugs are antacids EXCEPT:
Correct Answer: A
Rationale: Step-by-step rationale: - Misoprostol is a synthetic prostaglandin E1 analog used to prevent gastric ulcers, not an antacid. - Maalox, Mylanta, and Almagel are all antacids used to neutralize stomach acid. - Misoprostol increases gastric mucus production, inhibits acid secretion, and promotes healing of the stomach lining. - Therefore, the correct answer is A (Misoprostol) as it is not an antacid but rather a medication used to prevent ulcers.
Question 2 of 5
This drug has a little or no direct effect on chronotropy and dromotropy at normal doses:
Correct Answer: A
Rationale: The correct answer is A (Nifedipine) because it is a calcium channel blocker that primarily acts on vascular smooth muscle, leading to vasodilation without significant effects on heart rate (chronotropy) or conduction velocity (dromotropy). Diltiazem and Verapamil, choices B and C, are also calcium channel blockers but have more pronounced negative chronotropic and dromotropic effects due to their additional actions on the heart. Choice D is incorrect because Nifedipine specifically has minimal direct effects on chronotropy and dromotropy compared to Diltiazem and Verapamil.
Question 3 of 5
All of the following statements regarding vasodilators are true EXCEPT:
Correct Answer: B
Rationale: The correct answer is B because Nifedipine is a calcium channel blocker, not a dopamine receptor antagonist. Nifedipine works by blocking calcium channels in vascular smooth muscle, causing vasodilation. Hydralazine can cause reflex tachycardia due to its potent vasodilatory effects. Nitroprusside dilates both arterioles and veins, leading to decreased afterload and preload. Minoxidil is a potent arteriolar vasodilator used to treat hypertension but can cause hypertrichosis as a side effect.
Question 4 of 5
Which of the following organ hormones is a target for growth hormone (somatotropine GH)?
Correct Answer: B
Rationale: The correct answer is B: Insulin-like growth factors (IGF somatomedins). Growth hormone stimulates the liver to produce IGF, which is the main mediator of GH effects on growth. IGF acts on various tissues to promote growth and development. Glucocorticoids (A) are not direct targets of GH. Triiodothyronine (C) and testosterone (D) have roles in growth but are not primary targets of GH action.
Question 5 of 5
Glucagon is:
Correct Answer: B
Rationale: The correct answer is B because glucagon is indeed a peptide consisting of a single chain of 29 amino acids. This is a known fact in biochemistry. Glucagon is a hormone produced by the pancreas that plays a key role in regulating blood sugar levels. Now, let's analyze why the other choices are incorrect: A: Glucagon is not a glycoprotein with a molecular weight of 6000. This is not a characteristic of glucagon. C: Glucagon is not a fructooligosaccharide. It is a peptide hormone, not a type of carbohydrate. D: Glucagon is not a small protein with a molecular weight of 5808 having a disulfide linkage. While glucagon does have disulfide linkages, its molecular weight is not 5808.