HESI RN
HESI Medical Surgical Exam
1. A client with Diabetes Insipidus (DI) is being cared for by a nurse. Which data warrants the most immediate intervention by the nurse?
- A. Serum sodium of 185 mEq/L (185 mmol/L)
- B. Dry skin with poor skin turgor
- C. Apical rate of 110 beats per minute
- D. Polyuria and excessive thirst
Correct answer: A
Rationale: A serum sodium level of 185 mEq/L (185 mmol/L) is dangerously high and indicates severe dehydration, requiring immediate intervention to prevent neurological damage. The other options are not as critical as high serum sodium levels, which can lead to serious complications such as seizures, coma, and death if not promptly addressed. Dry skin with poor skin turgor and polyuria with excessive thirst are common findings in clients with Diabetes Insipidus and should be managed but do not pose an immediate threat to the client's life. An apical heart rate of 110 beats per minute may indicate tachycardia, which could be related to dehydration but is not as urgent as addressing the severe hypernatremia.
2. The nurse is preparing to administer the first dose of an antibiotic to a patient admitted for a urinary tract infection. Which action is most important prior to administering the antibiotic?
- A. Administering a small test dose to determine if hypersensitivity exists
- B. Having epinephrine available in case of a severe hypersensitivity reaction
- C. Monitoring baseline vital signs, including temperature and blood pressure
- D. Obtaining a specimen for culture and sensitivity
Correct answer: D
Rationale: The most crucial action before administering an antibiotic for a urinary tract infection is to obtain a specimen for culture and sensitivity. This ensures the accurate identification of the causative organism and helps determine the most effective antibiotic therapy. Administering a test dose to detect hypersensitivity is usually reserved for cases with a strong suspicion of allergy to a needed antibiotic. Keeping epinephrine available is important when there is a significant risk of a severe allergic reaction. Monitoring baseline vital signs is essential during antibiotic therapy but is not the top priority before administering the first dose.
3. A healthcare professional is reviewing laboratory results for a client who is at risk for nephrotoxicity due to medications. Which of the following serum creatinine results does the healthcare professional document as normal?
- A. 0.2 mg/dL
- B. 1.0 mg/dL
- C. 2.8 mg/dL
- D. 3.9 mg/dL
Correct answer: B
Rationale: The normal serum creatinine level typically ranges from 0.6 to 1.3 mg/dL. A result of 1.0 mg/dL falls within this normal range. A serum creatinine level of 0.2 mg/dL is abnormally low and may indicate decreased muscle mass or malnutrition. On the other hand, results of 2.8 mg/dL and 3.9 mg/dL are elevated, signifying impaired kidney function and potential nephrotoxicity from medications.
4. A client is scheduled to undergo computerized tomography (CT) with contrast for evaluation of an abdominal mass. The nurse should tell the client that:
- A. The test may be painful
- B. The test takes 2 to 3 hours
- C. Food and fluids are not allowed for 4 hours after the test
- D. Dye is injected and may cause a warm flushing sensation
Correct answer: D
Rationale: The correct answer is D. A contrast-aided CT scan involves the injection of dye to enhance the images obtained. The dye may cause a warm flushing sensation when injected, which is a common side effect. Choices A, B, and C are incorrect. CT with contrast is generally not a painful procedure, the duration of the test does not usually take 2 to 3 hours, and restrictions on food and fluids are typically before the test, not afterward.
5. The healthcare professional is reviewing a patient’s chart prior to administering gentamicin (Garamycin) and notes that the last serum peak drug level was 9 mcg/mL and the last trough level was 2 mcg/mL. What action will the healthcare professional take?
- A. Administer the next dose as prescribed.
- B. Obtain repeat peak and trough levels before administering the next dose.
- C. Report potential drug toxicity to the patient’s healthcare provider.
- D. Notify the patient’s healthcare provider of decreased drug therapeutic level.
Correct answer: C
Rationale: Gentamicin peak levels should ideally be between 5 to 8 mcg/mL, and trough levels should be within the range of 0.5 to 2 mcg/mL to ensure therapeutic efficacy while minimizing toxicity risk. In this case, the patient's peak level is above the recommended range, and the trough level is at the higher end, indicating potential drug toxicity. Therefore, the correct action for the healthcare professional is to report the possibility of drug toxicity to the patient’s healthcare provider. Administering the next dose as prescribed (Choice A) would exacerbate the toxicity risk. Obtaining repeat peak and trough levels (Choice B) may confirm the current levels but does not address the immediate concern of potential toxicity. Reporting a decreased drug therapeutic level (Choice D) is not the priority in this scenario, as the focus should be on addressing the potential toxicity issue.
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