ATI RN
ATI Pharmacology
1. A client has a prescription for Bethanechol to treat urinary retention. Which of the following findings is a manifestation of muscarinic stimulation?
- A. Dry mouth
- B. Hypertension
- C. Excessive perspiration
- D. Fecal impaction
Correct answer: C
Rationale: The correct answer is C: Excessive perspiration. Bethanechol is a muscarinic agonist that stimulates muscarinic receptors. Activation of muscarinic receptors can lead to excessive perspiration (diaphoresis) due to increased cholinergic activity, affecting sweat glands. Dry mouth, hypertension, and fecal impaction are not typically associated with muscarinic stimulation. Dry mouth is more commonly associated with anticholinergic medications, hypertension can be a result of alpha-adrenergic stimulation, and fecal impaction is not a direct effect of muscarinic receptor activation.
2. A healthcare provider is educating a client who has a prescription for Theophylline. Which of the following instructions should the healthcare provider include?
- A. Avoid caffeine while taking this medication.
- B. You should increase your fluid intake.
- C. Take this medication in the evening.
- D. You may experience increased appetite while on this medication.
Correct answer: A
Rationale: The correct answer is A: 'Avoid caffeine while taking this medication.' Caffeine can increase the risk of theophylline toxicity as it competes for the same metabolic pathways. Consuming caffeine while on theophylline can lead to adverse effects. Choice B is incorrect because although maintaining adequate hydration is important, it is not a specific instruction related to theophylline use. Choice C is incorrect as the timing of the medication administration should be based on the healthcare provider's recommendation and the client's individual needs. Choice D is incorrect as increased appetite is not a common side effect associated with theophylline.
3. A client is prescribed Atorvastatin. Which of the following laboratory values should be monitored to assess for potential adverse effects?
- A. Blood glucose
- B. Creatine kinase
- C. Hemoglobin
- D. Sodium
Correct answer: B
Rationale: Creatine kinase should be monitored in clients taking Atorvastatin as it can indicate muscle damage, a serious adverse effect of statins. Elevated creatine kinase levels can suggest myopathy or rhabdomyolysis, which are potential complications associated with statin therapy. Monitoring creatine kinase levels helps in early detection of muscle damage and guides appropriate management to prevent severe complications.
4. What is the primary use of lithium?
- A. Lower blood glucose
- B. Slow the heart rate
- C. Stabilize mood
- D. Heal ulcers
Correct answer: C
Rationale: The correct answer is C: Stabilize mood. Lithium is primarily used to stabilize mood, especially in conditions like bipolar disorder. It helps in reducing the frequency and severity of manic episodes, making it an essential medication for mood stabilization. Choices A, B, and D are incorrect as lithium is not used to lower blood glucose, slow the heart rate, or heal ulcers.
5. A healthcare professional is preparing to administer dextrose 5% in water (D5W) 750 mL IV to infuse over 6 hr. How many mL/hr should the IV pump be set to deliver?
- A. 125 mL/hr
- B. 100 mL/hr
- C. 150 mL/hr
- D. 200 mL/hr
Correct answer: A
Rationale: To calculate the flow rate, divide the total volume by the total time: 750 mL / 6 hr = 125 mL/hr. Therefore, the IV pump should be set to deliver 125 mL/hr to infuse D5W 750 mL over 6 hours. Choice B (100 mL/hr) is incorrect because it does not accurately divide the total volume by the total time. Choice C (150 mL/hr) and Choice D (200 mL/hr) are incorrect as they are not the correct flow rates needed to infuse the D5W solution over the specified time period.
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