ATI RN
ATI Intro to Pharmacology Quizlet Questions
Question 1 of 5
Action of anticholinergic drugs:
Correct Answer: A
Rationale: Atropine sulfate is an anticholinergic drug that antagonizes the action of acetylcholine at muscarinic receptors. By blocking the parasympathetic nervous system, atropine produces various effects including decreased salivation, increased heart rate, bronchodilation, and mydriasis (pupillary dilation). These properties make atropine useful in treating conditions such as bradycardia, poisoning with certain toxins, and for dilation of the pupil during eye exams.
Question 2 of 5
Action of anticholinergic drugs:
Correct Answer: A
Rationale: Atropine sulfate is an anticholinergic drug that antagonizes the action of acetylcholine at muscarinic receptors. By blocking the parasympathetic nervous system, atropine produces various effects including decreased salivation, increased heart rate, bronchodilation, and mydriasis (pupillary dilation). These properties make atropine useful in treating conditions such as bradycardia, poisoning with certain toxins, and for dilation of the pupil during eye exams.
Question 3 of 5
At a dose of 10 mg, drug X lowers total cholesterol by 50 mg/dL, while a maximum drop in cholesterol of 65 mg/dL is achieved at 40 mg. At a dose of 5 mg, drug Y lowers cholesterol by 50 mg/dL, while a maximum drop in cholesterol of 55 mg/dL is achieved at 10 mg. What can be concluded about the efficacy and potency of these two drugs?
Correct Answer: D
Rationale: Potency is dose for effect-Drug Y lowers 50 mg/dL at 5 mg, versus X at 10 mg, making Y more potent. Efficacy is max effect-X's 65 mg/dL beats Y's 55 mg/dL, giving X higher efficacy. X isn't more potent-higher dose needed. Y's potency and X's efficacy align with data, per pharmacodynamics.
Question 4 of 5
The physician has prescribed sertraline (Zoloft) for the patient who is anxious and depressed. The patient calls the nurse to report that he has experienced delayed ejaculation since being on this medication. What is the best response by the nurse?
Correct Answer: B
Rationale: Sertraline, an SSRI, often causes sexual side effects like delayed ejaculation-common, per patient data-but depression treatment outweighs this for now. Switching is an option, not immediate. Suicide risk from stopping is possible but not assumed. It rarely resolves alone-management varies. Prioritizing depression balances care, per guidelines.
Question 5 of 5
A client is prescribed Colchicine. After taking three doses, the client complains of nausea, vomiting, and loose bowel stools. Which of the following should the client do?
Correct Answer: B
Rationale: Nausea, vomiting, and diarrhea are signs of colchicine toxicity, which can be life-threatening. The client should stop taking the medication and notify the physician immediately. Continuing the medication or adjusting the dose without medical advice can exacerbate the toxicity. Colchicine has a narrow therapeutic index, and close monitoring is required to prevent adverse effects.