HESI LPN
HESI Practice Test Pharmacology
1. A client has a prescription for heparin 1,000 units IV STAT. Several pre-filled syringes of low molecular weight heparin are available in the client's medication drawer. Which action should the nurse implement?
- A. Dilute the available heparin in 250ml of normal saline solution prior to IV administration
- B. Advise the pharmacy on the need to deliver a vial of heparin to the nursing unit immediately
- C. Calculate and administer the equivalent dose of the available low molecular weight heparin
- D. Request a prescription to change the route of administration and use the available heparin
Correct answer: B
Rationale: In this scenario, the nurse should contact the pharmacy to obtain the correct heparin formulation as the prescription calls for heparin 1,000 units IV STAT. Low molecular weight heparin is not the same as unfractionated heparin, and therefore, the nurse should not administer the available low molecular weight heparin without first obtaining the correct medication. Diluting the available heparin, calculating an equivalent dose, or changing the route of administration would not address the discrepancy between the prescribed heparin and the available low molecular weight heparin.
2. A client with hypertension is prescribed atenolol. The nurse should monitor the client for which potential side effect?
- A. Bradycardia
- B. Tachycardia
- C. Hypotension
- D. Hyperglycemia
Correct answer: A
Rationale: When a client is prescribed atenolol, a beta-blocker medication used to treat hypertension, the nurse should monitor for bradycardia as a potential side effect. Atenolol works by slowing the heart rate, and one common adverse effect is bradycardia, which is a slower than normal heart rate. Monitoring the client's heart rate is essential to detect and manage this potential side effect promptly. Choices B, C, and D are incorrect because atenolol typically does not cause tachycardia, hypotension, or hyperglycemia as primary side effects. Instead, bradycardia is a common concern due to the drug's mechanism of action in reducing heart rate.
3. A client is prescribed amitriptyline for depression. The practical nurse (PN) should monitor for which potential side effect?
- A. Insomnia
- B. Weight loss
- C. Dry mouth
- D. Increased appetite
Correct answer: D
Rationale: The correct answer is 'D: Increased appetite.' Amitriptyline, a tricyclic antidepressant, is known to commonly cause increased appetite, leading to weight gain. Monitoring for increased appetite is crucial as it can impact the client's overall health and well-being. Choice A, 'Insomnia,' is less likely as amitriptyline is more associated with sedative effects. Choice B, 'Weight loss,' is incorrect as weight gain is a more common side effect. Choice C, 'Dry mouth,' is a potential side effect of amitriptyline, but it is not directly related to increased appetite, which is the primary concern in this case.
4. A practical nurse is caring for a client with chronic obstructive pulmonary disease (COPD) who is receiving theophylline. Which symptom indicates that the client may be experiencing theophylline toxicity?
- A. Bradycardia
- B. Tremors
- C. Constipation
- D. Hypotension
Correct answer: B
Rationale: Tremors are a common symptom of theophylline toxicity. Other symptoms that may indicate theophylline toxicity include nausea, vomiting, and seizures. Bradycardia, constipation, and hypotension are not typically associated with theophylline toxicity. It is important for the nurse to monitor the client closely for these signs of toxicity and report them promptly to the healthcare provider to prevent further complications.
5. A client has sublingual nitroglycerine tablets prescribed to treat angina. The nurse realizes the client requires further education if the client makes which statements? (Select one that doesn't apply.)
- A. I will need to replace the nitroglycerine tablets every 3 to 5 months, not in a year.
- B. I should continue taking nitroglycerine tablets if I develop a headache.
- C. I understand nitroglycerine tablets do not cause addiction.
- D. If I feel dizzy when I take these, I should sit down or lie down until I feel better.
Correct answer: D
Rationale: The correct answer is D. Nitroglycerine sublingual tablets need to be replaced every 3 to 5 months, not every year, making statement A incorrect. While nitroglycerine can cause a headache, it is important to continue taking the prescribed nitroglycerine if the client has angina, making statement B accurate. Nitroglycerine tablets do not cause addiction, so statement C is correct. Dizziness and weakness are associated with the hypotensive effect of nitroglycerine; therefore, if the client feels dizzy when taking them, they should sit down or lie down until they feel better. Taking nitroglycerine tablets before an activity known to cause angina can help prevent angina attacks.
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