ATI RN
ATI Pharmacology Proctored Exam
1. A provider prescribes phenobarbital for a client who has a seizure disorder. The medication has a long half-life of 4 days. How many times per day should the nurse expect to administer this medication?
- A. One
- B. Two
- C. Three
- D. Four
Correct answer: A
Rationale: Phenobarbital has a long half-life of 4 days, meaning it remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should expect to administer phenobarbital once a day to maintain therapeutic levels and effectiveness. Administering it more than once a day would lead to unnecessary dosing and potential adverse effects as the medication remains active in the body for an extended period.
2. A healthcare provider is assessing a client who takes Desmopressin for Diabetes Insipidus. For which of the following adverse effects should the healthcare provider monitor?
- A. Hypovolemia
- B. Hypercalcemia
- C. Agitation
- D. Headache
Correct answer: D
Rationale: The correct answer is D: Headache. Headache during desmopressin therapy can indicate water intoxication, which is a potential adverse effect. Desmopressin is a medication used to treat Diabetes Insipidus by reducing excessive urination and thirst. Monitoring for headaches is crucial as it can signal decreased sodium levels due to water retention, leading to water intoxication, which is a serious concern. Hypovolemia, hypercalcemia, and agitation are not typically associated with desmopressin therapy for Diabetes Insipidus.
3. A healthcare professional is preparing to administer vancomycin 1 g by intermittent IV bolus. Available is vancomycin 1 g in 100 mL of dextrose 5% in water (D5W) to infuse over 45 min. The drop factor of the manual IV tubing is 10 gtt/mL. How many gtt/min should the healthcare professional adjust the manual IV infusion to deliver?
- A. 22 gtt/min
- B. 24 gtt/min
- C. 20 gtt/min
- D. 18 gtt/min
Correct answer: A
Rationale: To determine the flow rate in drops per minute (gtt/min), you can use the formula: (Volume in mL x Drop factor) / Time in minutes = Flow rate in gtt/min. In this case, it would be (100 mL x 10 gtt/mL) / 45 min = 22 gtt/min. Therefore, the healthcare professional should adjust the manual IV infusion to deliver 22 gtt/min. Choice B, 24 gtt/min, is incorrect as it results from a miscalculation. Choices C and D, 20 gtt/min and 18 gtt/min respectively, are also incorrect calculations based on the given parameters.
4. A client is being taught by a nurse about long-term use of oral prednisone for chronic asthma. The nurse should instruct the client to monitor for which of the following adverse effects?
- A. Weight Gain
- B. Nervousness
- C. Bradycardia
- D. Constipation
Correct answer: A
Rationale: Weight gain is a common adverse effect of long-term prednisone use. Prednisone, a corticosteroid medication, can cause fluid retention and increased appetite, leading to weight gain. Nervousness (choice B) is more commonly associated with stimulant medications or excessive caffeine intake. Bradycardia (choice C) refers to a slow heart rate and is not a typical adverse effect of prednisone. Constipation (choice D) is not a common side effect of prednisone; in fact, prednisone is more likely to cause gastrointestinal issues such as increased appetite and weight gain.
5. A client is being discharged with a new prescription for an antihypertensive medication. Which of the following statements should the nurse provide?
- A. Be sure to limit your potassium intake while taking the medication.
- B. You should check your blood pressure every 8 hours while taking this medication.
- C. Your medication dosage will be increased if you develop tachycardia.
- D. Change positions slowly when you move from sitting to standing.
Correct answer: D
Rationale: The correct answer is D. Orthostatic hypotension is a common adverse effect of antihypertensive medications. The client should move slowly to a sitting or standing position and should be taught to sit or lie down if lightheadedness or dizziness occurs. Choices A, B, and C are incorrect. Limiting potassium intake is usually not necessary with antihypertensive medications. Checking blood pressure every 8 hours is not a standard recommendation unless specified by a healthcare provider. Increasing medication dosage due to tachycardia is not a typical practice for antihypertensive medications.
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