HESI RN
HESI RN Pharmacology Questions
Extract:
Question 1 of 5
A client receives a prescription for a secondary infusion of IV erythromycin 1 gram in 200 mL dextrose 5% in water (D5W) to be infused in 90 minutes. The nurse should program the infusion pump to deliver how many mL/hour? (Enter the numerical value only. If rounding is required, round to the nearest whole number.) The nurse should program the infusion pump to deliver how many mL/hour?
Correct Answer: 133
Rationale: Volume = 200 mL; time = 90 minutes = 1.5 hours; infusion rate = 200 mL ÷ 1.5 hours = 133.33 mL/hr, rounded to 133 mL/hr.
Question 2 of 5
Which instruction should the nurse include when teaching a client about self-administration of a bulk-forming laxative? Which instruction should the nurse include when teaching a client about self-administration of a bulk-forming laxative?
Correct Answer: C
Rationale: Bulk-forming laxatives absorb water to soften stool and promote bowel movements. Following administration with an additional glass of water ensures adequate hydration, preventing intestinal obstruction and enhancing efficacy.
Question 3 of 5
The nurse is administering subcutaneous enoxaparin to a client following knee replacement surgery to prevent a deep vein thrombosis. Which laboratory result requires immediate action by the nurse? Which laboratory result requires immediate action by the nurse?
Correct Answer: B
Rationale: A platelet count of 100,000/mm3 indicates thrombocytopenia, increasing bleeding risk with enoxaparin, an anticoagulant. Immediate action, such as notifying the provider, is needed to prevent hemorrhage.
Question 4 of 5
A peak and trough level was obtained from a client receiving an aminoglycoside IV every 8 hours. Which finding presents the highest risk for the client and should be reported immediately to the healthcare provider? Which finding presents the highest risk for the client and should be reported immediately to the healthcare provider?
Correct Answer: C
Rationale: Increased peak and trough levels of aminoglycosides indicate potential toxicity, risking nephrotoxicity (from high peaks) and ototoxicity (from high troughs). Immediate reporting to the provider prevents serious harm.
Question 5 of 5
The nurse prepares to administer a scheduled dose of labetalol PO to a client with hypertension. The client's vital signs are a temperature of 99° F (37.2° C), a heart rate of 48 beats/minute, respirations of 16 breaths/minute, and a blood pressure of 150/90 mm Hg. Which action should the nurse take? Which action should the nurse take?
Correct Answer: C
Rationale: Labetalol, a beta-blocker, can worsen bradycardia (heart rate 48 beats/minute). Withholding the dose and notifying the provider ensures safety, preventing potential cardiac complications.