HESI LPN
HESI CAT Exam 2022
1. A client is admitted with pyelonephritis, and cultures reveal an Escherichia coli infection. The client is allergic to penicillins, and the healthcare provider prescribed vancomycin IV. The nurse should plan to carefully monitor the client for which finding during IV administration?
- A. Tissue sloughing upon extravasation
- B. Elevated blood pressure and heart rate
- C. Tinnitus and vertigo
- D. Erythema of the face, neck, and chest
Correct answer: C
Rationale: The correct answer is C: Tinnitus and vertigo. Vancomycin can cause ototoxicity and nephrotoxicity, leading to symptoms like tinnitus and vertigo. Monitoring for these adverse effects is crucial to prevent further complications. Choices A, B, and D are incorrect because tissue sloughing, elevated blood pressure and heart rate, and erythema of the face, neck, and chest are not typically associated with vancomycin administration. Therefore, the nurse should focus on monitoring for signs of ototoxicity and nephrotoxicity such as tinnitus and vertigo.
2. After successful resuscitation, a client is given propranolol and transferred to the Intensive Coronary Care Unit (ICCU). On admission, magnesium sulfate 4 grams IV in 250 ml D5W at one gram/hour. Which assessment findings require immediate intervention by the nurse?
- A. Dark amber urine draining via an indwelling catheter at a rate of 40 ml per hour
- B. Serum calcium of 9.0 mg/dl (2.2 mmol/L SI) and magnesium of 1.8 mg/dl or Eq/L (0.74 mmol/L SI)
- C. Sinus rhythm at 72 beats/minute and peripheral blood pressure of 99/62
- D. Respiratory rate of 10 breaths per minute
Correct answer: D
Rationale: The correct answer is D. A low respiratory rate of 10 breaths per minute is indicative of possible magnesium toxicity, which can be a serious condition requiring immediate intervention. It is a critical finding that needs prompt attention to prevent further complications. The other options are not as urgent: A - dark amber urine may indicate dehydration but does not require immediate intervention, B - serum calcium and magnesium levels are within normal limits, C - sinus rhythm and blood pressure values are also within normal range and do not require immediate action.
3. A client with chronic kidney disease has an arteriovenous (AV) fistula in the left forearm. Which observation by the nurse indicates that the fistula is patent?
- A. Distended, tortuous veins in the left hand
- B. The left radial pulse is 2+ bounding
- C. Auscultation of a thrill on the left forearm
- D. Assessment of a bruit on the left forearm
Correct answer: C
Rationale: Auscultation of a thrill on the left forearm is the correct observation indicating that the AV fistula is patent. A thrill is a palpable vibration or buzzing sensation felt over the fistula, indicating the presence of blood flow. Choices A, B, and D do not directly assess the patency of the fistula. Distended, tortuous veins in the left hand may indicate venous hypertension; a bounding radial pulse could suggest increased blood flow through an artery, but it does not confirm fistula patency; assessment of a bruit indicates turbulent blood flow, but it does not confirm patency.
4. A heparin infusion is prescribed for a client who weighs 220 pounds. After administering a bolus dose of 80 units/kg, the nurse calculates the infusion rate for the heparin sodium at 18 units/kg/hour. The available solution is Heparin Sodium 25,000 units in 5% Dextrose Injection 250 ml. The nurse should program the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: B
Rationale: To calculate the infusion rate, first, find the total dose required per hour, which is the patient's weight (220 pounds) multiplied by the prescribed rate (18 units/kg/hour). This equals 3960 units/hour. Next, determine how many ml of the solution contain 25,000 units; this is 250 ml. Divide the total dose required per hour (3960 units) by the units per ml (25,000 units/250 ml) to find how many ml are needed per hour. This results in 27 ml/hour. Therefore, the nurse should program the infusion pump to deliver 27 ml/hour. Choice A (18) is incorrect as it does not account for the concentration of the heparin solution. Choices C (36) and D (45) are incorrect as they do not reflect the accurate calculations based on the patient's weight and the heparin concentration in the solution.
5. When administering ceftriaxone sodium intravenously to a client before surgery, which assessment finding requires the most immediate intervention by the nurse?
- A. Headache
- B. Pruritus
- C. Nausea
- D. Stridor
Correct answer: D
Rationale: Stridor is a high-pitched, noisy breathing sound that can indicate a serious condition like airway obstruction or a severe allergic reaction, necessitating immediate intervention to maintain the client's airway and prevent further complications. While headache, pruritus, and nausea are important to assess and manage, they are not as immediately life-threatening as stridor, which requires prompt attention to prevent respiratory compromise.
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