ATI RN
Cardiovascular Drugs Commonly Prescribed Quizlet Questions
Question 1 of 5
Which of the following statements concerning Dipyridamole is true?
Correct Answer: D
Rationale: Step 1: Dipyridamole blocks the reabsorption and breakdown of adenosine, leading to increased endogenous adenosine levels, which causes vasodilatation. Step 2: This vasodilatation results in increased blood flow to the myocardium, counteracting the hypoperfusion caused by stenotic coronary arteries. Step 3: Dipyridamole also inhibits platelet aggregation, which can be beneficial in preventing thrombosis. Step 4: Therefore, all three statements (A, B, and C) are true regarding Dipyridamole, making option D the correct choice.
Question 2 of 5
Insulin causes reduction in blood sugar level by the following mechanisms EXCEPT:
Correct Answer: D
Rationale: Insulin does not affect glucose absorption from the gut. This is because glucose absorption primarily occurs in the small intestine and is not directly influenced by insulin. Insulin primarily works by promoting glucose uptake in peripheral tissues, reducing glycogen breakdown, and inhibiting gluconeogenesis in the liver. Therefore, decreased glucose absorption from the gut is not a mechanism through which insulin reduces blood sugar levels.
Question 3 of 5
Physiologic doses of glucocorticoid can result in:
Correct Answer: D
Rationale: The correct answer is D because physiologic doses of glucocorticoids can indeed result in all of the mentioned effects. A: Glucocorticoids can increase liver glycogen stores, gluconeogenesis, and lipolysis. B: Glucocorticoids help maintain cardiovascular function by potentiating norepinephrine and improve skeletal muscle function. C: Glucocorticoids can enhance hemoglobin synthesis, leading to an increase in red blood cell count. Therefore, all three choices are valid effects of physiologic doses of glucocorticoids, making option D the correct answer.
Question 4 of 5
Which category of histamine H1 antagonists is noted for the highest local anesthetic effect?
Correct Answer: D
Rationale: The correct answer is D, Phenothiazines such as Promethazine, because they have the highest local anesthetic effect among histamine H1 antagonists. This is due to their structural properties that allow them to interact with sodium channels and block nerve impulses effectively. Phenothiazines have a bulky side chain that enhances their local anesthetic properties. A, Alkylamines like Brompheniramine, are known for their sedative effects rather than local anesthetic properties. B, Piperidines including Loratadine and Fexofenadine, are mainly used for their antihistaminic effects and do not exhibit strong local anesthetic properties. C, Ethylenediamines like Suprastine, are not recognized for their local anesthetic effects but rather for their antihistaminic actions. In summary, Phenothiazines stand out as having the highest local anesthetic effect compared to the other categories of histamine H
Question 5 of 5
Deficiency symptom of riboflavin is:
Correct Answer: D
Rationale: The correct answer is D (All of the above) because riboflavin deficiency can manifest as all the symptoms mentioned in choices A, B, and C. Riboflavin is essential for maintaining healthy skin and mucous membranes, so deficiency can lead to cheilitis (choice A) and cheilosis (choice B), which both involve inflammation and fissures in the lips. Additionally, riboflavin deficiency can cause angular stomatitis (choice C), which is characterized by inflammation and fissures at the corners of the mouth. Therefore, all the symptoms listed in choices A, B, and C are potential deficiency symptoms of riboflavin. Choices A, B, and C are incorrect individually because they only describe specific symptoms of riboflavin deficiency, whereas the correct answer D encompasses all the possible symptoms.