HESI LPN
HESI Practice Test Pharmacology
1. While a client is receiving the medication haloperidol, which client data would indicate to the practical nurse that the medication is therapeutic?
- A. The client has maintained consistent weight loss of 2 pounds per week.
- B. The client has demonstrated a decrease in paranoid behaviors.
- C. The client's blood pressure has remained within normal limits.
- D. The client's fasting blood glucose has remained below 120 mg/dL.
Correct answer: B
Rationale: When a client is taking haloperidol, a therapeutic response involves a decrease in symptoms such as paranoia, hallucinations, delusions, and emotional excitement. These improvements indicate that the medication is effectively managing the client's condition. Monitoring for a reduction in paranoid behaviors helps the practical nurse assess the medication's effectiveness in addressing the client's psychiatric symptoms.
2. Phenazopyridine is commonly prescribed for clients with urinary tract infections (UTI). Which statement by the practical nurse describes the purpose for the administration of phenazopyridine?
- A. To alter the pH level of the urine
- B. To reduce the frequency of bladder spasms
- C. To alleviate the painful symptoms caused by the UTI
- D. To prevent bacterial replication and resistance development
Correct answer: C
Rationale: The correct answer is C. Phenazopyridine, a urinary analgesic, is utilized to alleviate the pain associated with urinary tract infections (UTIs) like burning, pain, urgency, and frequent voiding. The administration of phenazopyridine can cause the urine to turn a bright red-orange color. It is recommended to take this medication with food to reduce gastric irritation. Phenazopyridine should only be used for a maximum of 2 days when taken alongside an antibacterial agent, which is typically prescribed for about 2 weeks to treat the underlying infection.
3. The practical nurse administered 15 units of NPH insulin subcutaneously to a client before they consumed their breakfast at 7:30 AM. At what time is the client at an increased risk for a hypoglycemic reaction?
- A. 8:30 to 11:30 AM
- B. 3:30 to 7:30 PM
- C. 9:30 PM to midnight
- D. 1:00 to 5:00 AM
Correct answer: B
Rationale: NPH insulin, an intermediate-acting type, peaks approximately 8 to 12 hours after subcutaneous administration. Considering this, the client is most likely to experience a hypoglycemic reaction between 3:30 and 7:30 PM, making option B the correct answer. Choices A, C, and D are incorrect because they fall outside the peak time for a hypoglycemic reaction after administering NPH insulin.
4. A client with a history of stroke is prescribed clopidogrel. The nurse should monitor for which potential side effect?
- A. Bleeding
- B. Weight gain
- C. Nausea
- D. Headache
Correct answer: A
Rationale: When a client with a history of stroke is prescribed clopidogrel, the nurse should monitor for potential side effects, especially bleeding. Clopidogrel is an antiplatelet medication that works by preventing blood clots. One of the major risks associated with clopidogrel is an increased tendency to bleed. Therefore, monitoring for signs of bleeding, such as easy bruising, blood in stool or urine, or prolonged bleeding from minor cuts, is crucial to ensure patient safety and early intervention if needed.
5. 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.
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