HESI LPN
Pharmacology HESI Practice
1. A practical nurse (PN) is preparing to administer enoxaparin to a client. What is the most important action for the PN to take before administering this medication?
- A. Assess the client's blood pressure.
- B. Check the client's platelet count.
- C. Monitor the client's urine output.
- D. Review the client's blood glucose level.
Correct answer: B
Rationale: The correct answer is to check the client's platelet count. Enoxaparin can lead to thrombocytopenia (low platelet count), which can increase the risk of bleeding. Therefore, assessing the platelet count before administering enoxaparin is crucial to ensure that it is within a safe range. Assessing the client's blood pressure (Choice A) is not directly related to enoxaparin administration. Monitoring urine output (Choice C) and reviewing blood glucose levels (Choice D) are not essential actions before administering enoxaparin.
2. A client has been diagnosed with open-angle glaucoma. The healthcare provider prescribes pilocarpine 1% eye drops. The nurse explains that which action of this drug makes it a useful treatment for the client's condition?
- A. The ciliary muscle contracts, increasing the outflow of aqueous humor in the eye.
- B. Ciliary muscles are paralyzed to decrease accommodation.
- C. Bilateral mydriasis with cycloplegia is accomplished.
- D. The production of aqueous humor in the eyes is decreased.
Correct answer: A
Rationale: Pilocarpine, a cholinergic agent, stimulates the ciliary muscle to contract, which opens the trabecular meshwork and facilitates the outflow of aqueous humor, reducing intraocular pressure. This mechanism helps in managing open-angle glaucoma by improving drainage and lowering pressure within the eye. Choice A is correct because the contraction of the ciliary muscle increases the outflow of aqueous humor, aiding in the treatment of open-angle glaucoma. Choices B, C, and D are incorrect because they do not describe the mechanism of action of pilocarpine in treating glaucoma.
3. A client with epilepsy is prescribed lamotrigine. The nurse should monitor for which potential side effect?
- A. Drowsiness
- B. Nausea and vomiting
- C. Skin rash
- D. Dizziness
Correct answer: C
Rationale: When a client is prescribed lamotrigine, the nurse should closely monitor for the potential side effect of skin rash. Lamotrigine is known to cause skin rashes, which can be mild or severe, indicating a serious adverse reaction like Stevens-Johnson syndrome. Monitoring for skin rash is crucial to detect any signs of severe allergic reactions early and prevent further complications. Choices A, B, and D are incorrect as drowsiness, nausea and vomiting, and dizziness are not typically associated with lamotrigine use. While dizziness can be a side effect of some antiepileptic medications, it is not a common side effect of lamotrigine.
4. What instructions should the PN reinforce with the client regarding the newly prescribed medications isosorbide dinitrate and hydrochlorothiazide?
- A. Instruct the client to use a soft bristle toothbrush.
- B. Instruct the client to slowly rise from a sitting or lying down position.
- C. Instruct the client to elevate their legs above the level of their heart.
- D. Instruct the client to limit the amount of fiber in their diet.
Correct answer: B
Rationale: The correct instruction for the client is to slowly rise from a sitting or lying down position. Isosorbide dinitrate, a nitrate, and hydrochlorothiazide, a diuretic, can both cause hypotension. When used together, their additive effects can further lower blood pressure, leading to orthostatic hypotension. Instructing the client to change positions slowly helps prevent a sudden drop in blood pressure, reducing the risk of dizziness or falls. Choices A, C, and D are incorrect because they do not directly address the potential side effect of hypotension associated with the prescribed medications. Using a soft bristle toothbrush, elevating legs above the heart level, or limiting fiber intake are not specific instructions to mitigate the risk of orthostatic hypotension.
5. A client is receiving levothyroxine for hypothyroidism. The nurse should monitor the client for which potential side effect?
- A. Weight gain
- B. Dry skin
- C. Hair loss
- D. Hyperthermia
Correct answer: A
Rationale: Levothyroxine is a medication used to treat hypothyroidism by supplementing the body with thyroid hormone. If the dosage of levothyroxine is too high, it can cause symptoms of hyperthyroidism, including weight loss. Therefore, weight gain can be a potential side effect of levothyroxine if the dosage is excessive.
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