HESI RN
HESI Medical Surgical Specialty Exam
1. A client is brought to the emergency department by a neighbor. The client is lethargic and has a fruity odor on the breath. The client’s arterial blood gas (ABG) results are pH 7.25, PCO2 34 mm Hg, PO2 86 mm Hg, HCO3 14 mEq/L. Which of the following acid-base disturbances does the nurse recognize in these results?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Respiratory acidosis
- D. Respiratory alkalosis
Correct answer: A
Rationale: The correct answer is 'Metabolic acidosis.' Metabolic acidosis is characterized by a low pH (<7.35) and a low bicarbonate level (HCO3 <22 mEq/L). In this case, the client's ABG results show a pH of 7.25 and an HCO3 level of 14 mEq/L, indicating metabolic acidosis. The PCO2 of 34 mm Hg is normal, ruling out respiratory acidosis or alkalosis. The PO2 of 86 mm Hg is also within the normal range and is not indicative of a respiratory problem. Therefore, the client is experiencing metabolic acidosis based on the ABG results provided.
2. A client expresses difficulty voiding in public places. How should the nurse respond?
- A. Offer to turn on the faucet in the bathroom to help stimulate urination.
- B. Suggest a prescription for a diuretic to increase urine output.
- C. Propose moving to a room with a private bathroom to enhance comfort.
- D. Close the curtain to provide maximum privacy.
Correct answer: D
Rationale: The nurse should prioritize the client's privacy when addressing issues related to voiding discomfort in public places. Closing the curtain in the current room would offer immediate privacy and support the client's needs. Turning on the faucet is not an evidence-based intervention for voiding difficulties. Prescribing a diuretic is not appropriate without further assessment. While moving to a room with a private bathroom might be ideal, it may not be immediately feasible, making ensuring privacy in the current setting the most appropriate action.
3. The nurse is caring for a newly admitted patient who has severe gastroenteritis. The patient’s electrolytes reveal a serum sodium level of 140 mEq/L and a serum potassium level of 3.5 mEq/L. The nurse receives an order for intravenous 5% dextrose and normal saline with 20 mEq/L potassium chloride to infuse at 125 mL per hour. Which action is necessary prior to administering this fluid?
- A. Evaluate the patient’s urine output.
- B. Contact the provider to order arterial blood gases.
- C. Request an order for an initial potassium bolus.
- D. Suggest a diet low in sodium and potassium.
Correct answer: A
Rationale: Prior to administering IV fluids containing potassium, it is crucial to evaluate the patient's urine output. If the urine output is less than 25 mL/hr or 600 mL/day, there is a risk of potassium accumulation. Patients with low urine output should not receive IV potassium to prevent potential complications. Contacting the provider for arterial blood gases is unnecessary in this scenario as it does not directly relate to the administration of IV fluids with potassium. Administering potassium as a bolus is not recommended due to potential adverse effects. While dietary considerations are important, suggesting a low-sodium and low-potassium diet is not the immediate action required before administering IV fluids with potassium chloride.
4. After teaching a client with nephrotic syndrome and a normal glomerular filtration rate, the nurse assesses the client’s understanding. Which statement made by the client indicates a correct understanding of the nutritional therapy for this condition?
- A. I must decrease my intake of fat.
- B. I will increase my intake of protein.
- C. A decreased intake of carbohydrates will be required.
- D. An increased intake of vitamin C is necessary.
Correct answer: B
Rationale: In nephrotic syndrome, there is significant renal loss of protein leading to hypoalbuminemia and edema formation. If glomerular filtration is normal or near normal, increased protein loss should be matched by an increased intake of protein. Therefore, the correct statement indicating a correct understanding of the nutritional therapy for this condition is increasing protein intake. Decreasing fat, decreasing carbohydrates, or increasing vitamin C intake is not necessary for addressing the underlying issues associated with nephrotic syndrome.
5. The nurse is preparing to begin a medication regimen for a patient who will receive intravenous ampicillin and gentamicin. Which is an important nursing action?
- A. Administer each antibiotic to infuse over 15 to 20 minutes.
- B. Order serum peak and trough levels of ampicillin.
- C. Prepare the schedule so that the drugs are given at the same time.
- D. Set up separate tubing sets for each drug labeled with the drug name and date.
Correct answer: D
Rationale: When administering intravenous aminoglycosides like gentamicin with penicillins such as ampicillin, it is crucial to avoid mixing them in the same container. Separate tubing sets labeled with the drug name and date should be used to prevent interactions between the medications. Administering each antibiotic over 15 to 20 minutes (Choice A) may not be appropriate for all medications and does not address the issue of compatibility. Ordering serum peak and trough levels of ampicillin (Choice B) is important for monitoring drug levels but does not directly address the administration process. Preparing a schedule to give drugs simultaneously (Choice C) may increase the risk of drug interactions and is not recommended when administering incompatible medications.
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