ATI LPN
LPN Pharmacology
1. A hypertensive client who has been taking metoprolol (Lopressor) has been prescribed to decrease the dose of the medication. The client asks the nurse why this must be done over a period of 1 to 2 weeks. In formulating a response, the nurse incorporates the understanding that abrupt withdrawal could affect the client in which way?
- A. Result in hypoglycemia
- B. Give the client insomnia
- C. Precipitate rebound hypertension
- D. Cause enhanced side effects of other prescribed medications
Correct answer: C
Rationale: Abruptly stopping metoprolol can lead to rebound hypertension, causing a sudden increase in blood pressure due to the sudden withdrawal of the medication. Gradually tapering the dose helps the body adjust and reduces the risk of this adverse effect. Choices A, B, and D are incorrect. Stopping metoprolol suddenly is not known to result in hypoglycemia, insomnia, or enhanced side effects of other medications.
2. A client has a new prescription for albuterol. Which of the following instructions should the nurse include?
- A. Use the inhaler every 4 hours around the clock.
- B. Shake the inhaler well before use.
- C. Rinse your mouth with water after each use.
- D. Use the inhaler while lying down.
Correct answer: B
Rationale: Shaking the inhaler well before use is crucial as it helps ensure proper mixing of the medication, which is essential for effective delivery of the drug to the lungs. This step is important for optimal therapeutic effects of albuterol inhalation. Choices A, C, and D are incorrect. Using the inhaler every 4 hours around the clock without specifying a maximum number of doses can lead to overuse. Rinsing the mouth with water after each use is typically advised for inhaled corticosteroids to reduce the risk of oral thrush, not for albuterol. Using the inhaler while lying down is not recommended as it may lead to improper medication delivery to the lungs.
3. The nurse is teaching a client about lifestyle changes to manage hypertension. Which dietary change should the nurse recommend?
- A. Increase intake of red meat
- B. Use salt substitutes liberally
- C. Limit sodium intake to 2 grams per day
- D. Increase intake of processed foods
Correct answer: C
Rationale: The correct answer is C: 'Limit sodium intake to 2 grams per day.' This recommendation is crucial in managing hypertension because excessive sodium intake can lead to elevated blood pressure. Reducing sodium intake helps the body regulate fluid balance and lower blood pressure. Choices A, B, and D are incorrect. Increasing red meat intake can worsen hypertension due to its high saturated fat content. Using salt substitutes liberally can also be harmful as they often contain high amounts of potassium, which can be problematic for individuals with certain health conditions. Increasing processed foods consumption is generally discouraged in hypertension management due to their high sodium content and low nutritional value.
4. The client needs instruction on using a metered-dose inhaler (MDI). Which instruction should be given?
- A. Inhale the medication and then exhale immediately
- B. Exhale fully, then place the inhaler in your mouth and inhale deeply while pressing the canister
- C. Take two short breaths before inhaling the medication
- D. Hold your breath for 5 seconds after inhaling the medication
Correct answer: B
Rationale: The correct technique for using a metered-dose inhaler (MDI) involves exhaling fully before inhaling deeply while pressing the canister to ensure effective delivery of the medication. Choice A is incorrect as exhaling should precede inhaling. Choice C is incorrect as taking two short breaths is not part of the correct technique. Choice D is incorrect as there is no need to hold the breath for a specific time after inhaling the medication.
5. A healthcare professional is reviewing laboratory results for a client who has been taking carbamazepine. Which of the following findings should the healthcare professional report to the provider?
- A. WBC count 3,000/mm3
- B. Platelet count 150,000/mm3
- C. Hemoglobin 14 g/dL
- D. Serum potassium 4.5 mEq/L
Correct answer: A
Rationale: A WBC count of 3,000/mm3 indicates leukopenia, a serious side effect of carbamazepine. Leukopenia can increase the risk of infections due to decreased white blood cell count, which is important to report to the provider for further evaluation and management. Platelet count within normal range (choice B), hemoglobin level within normal range (choice C), and serum potassium level within normal range (choice D) are not directly associated with carbamazepine use and do not require immediate reporting as they do not indicate a serious adverse effect.
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