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 metoprolol. The healthcare provider should monitor the client for which potential side effect?
- A. Bradycardia
- B. Tachycardia
- C. Hyperglycemia
- D. Hyponatremia
Correct answer: A
Rationale: Metoprolol is a beta-blocker that works by slowing the heart rate and reducing blood pressure. One of the potential side effects of metoprolol is bradycardia, which is a slow heart rate. Monitoring for bradycardia is crucial as it can be an adverse effect of this medication.
3. A client is receiving heparin to treat a deep vein thrombosis. The nurse should monitor which laboratory result to assist in evaluating the efficacy of the drug?
- A. Platelet count
- B. Prothrombin time
- C. Partial thromboplastin time
- D. Serum levels of protamine sulfate
Correct answer: C
Rationale: The nurse should monitor the partial thromboplastin time to evaluate the efficacy of heparin. Partial thromboplastin time reflects the anticoagulant effect of heparin by measuring the intrinsic pathway of coagulation. Platelet count assesses platelet levels and is not specific to heparin efficacy. Prothrombin time is used to monitor warfarin therapy. Serum levels of protamine sulfate are not used to evaluate the efficacy of heparin.
4. A client with bipolar disorder is taking lithium. Which client assessment data would indicate a potential adverse effect of lithium therapy?
- A. Increased appetite
- B. Dry mouth and increased thirst
- C. Tremors and polyuria
- D. Constipation
Correct answer: B
Rationale: When assessing a client taking lithium, dry mouth and increased thirst are indicators of potential adverse effects. Lithium can lead to nephrogenic diabetes insipidus, causing polyuria and subsequent increased thirst due to impaired water reabsorption in the kidneys. Tremors can also be a sign of lithium toxicity. Monitoring and recognizing these symptoms are crucial in managing lithium therapy and preventing further complications.
5. A client with rheumatoid arthritis is prescribed hydroxychloroquine. What instruction should the nurse include in the client's teaching plan?
- A. Avoid sunlight exposure while taking this medication.
- B. Take this medication with food to reduce gastrointestinal upset.
- C. Report any signs of infection to the healthcare provider.
- D. Report any signs of vision changes to the healthcare provider.
Correct answer: D
Rationale: Hydroxychloroquine is known to cause vision changes, including retinopathy. Therefore, it is crucial for clients to report any vision changes promptly to their healthcare provider to prevent any potential ocular complications. While sunlight exposure should be limited due to photosensitivity, the key concern with hydroxychloroquine is the risk of vision changes, not gastrointestinal upset or infections.
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