HESI RN
HESI Medical Surgical Specialty Exam
1. When a patient is receiving high doses of a cephalosporin, which laboratory values will this patient's nurse monitor closely?
- A. Blood urea nitrogen (BUN), serum creatinine, and liver function tests
- B. Complete blood count and electrolytes
- C. Serum calcium and magnesium
- D. Serum glucose and lipids
Correct answer: A
Rationale: When a patient is receiving high doses of a cephalosporin, such as cefazolin, the nurse should closely monitor laboratory values that indicate renal and hepatic function. This includes checking the Blood Urea Nitrogen (BUN) and serum creatinine levels to assess kidney function. Additionally, monitoring liver function tests, such as AST, ALT, ALP, LDH, and bilirubin, is essential as cephalosporins can affect liver enzymes. Therefore, options B, C, and D are incorrect as they do not specifically address the parameters that are most pertinent when administering high doses of cephalosporins.
2. A nurse performing nasopharyngeal suctioning suddenly notes the presence of bloody secretions. What should the nurse do first?
- A. Continue suctioning to remove the blood
- B. Check the degree of suction being applied
- C. Encourage the client to cough out the bloody secretions
- D. Remove the suction catheter from the client’s nose and begin vigorous suctioning through the mouth
Correct answer: B
Rationale: The correct answer is to check the degree of suction being applied (Choice B). When bloody secretions are encountered during nasopharyngeal suctioning, it is crucial to assess the situation promptly. Checking the degree of suction being applied is the first step as excessive suction pressure may be causing trauma and bleeding. Adjusting the suction pressure may be necessary to prevent further harm. Continuing suctioning to remove the blood (Choice A) or performing vigorous suctioning through the mouth (Choice D) can lead to increased trauma and worsen bleeding. Encouraging the client to cough out the bloody secretions (Choice C) is not appropriate since the client undergoing suctioning is typically unable to expectorate secretions. Therefore, the priority is to check and adjust the suction settings to ensure safe and effective suctioning.
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. The nurse is caring for a patient who is receiving isotonic intravenous (IV) fluids at an infusion rate of 125 mL/hour. The nurse performs an assessment and notes a heart rate of 102 beats per minute, a blood pressure of 160/85 mm Hg, and crackles auscultated in both lungs. Which action will the nurse take?
- A. Decrease the IV fluid rate and notify the provider.
- B. Increase the IV fluid rate and notify the provider.
- C. Request an order for a colloidal IV solution.
- D. Request an order for a hypertonic IV solution.
Correct answer: A
Rationale: The patient is showing signs of fluid volume excess, indicated by crackles in both lungs, increased heart rate, and elevated blood pressure. To address this, the nurse should decrease the IV fluid rate and notify the provider. Increasing the IV fluid rate would worsen fluid overload. Requesting colloidal or hypertonic IV solutions would exacerbate the issue by pulling more fluids into the intravascular space, leading to further volume overload.
5. The nurse is monitoring a client with chronic renal failure who is receiving hemodialysis. The nurse should report which of the following findings immediately?
- A. Clear dialysate outflow.
- B. Weight gain of 2 lbs (0.9 kg) since the last treatment.
- C. Blood pressure of 130/80 mm Hg.
- D. Pulse rate of 72 bpm.
Correct answer: B
Rationale: The correct answer is B. Weight gain of 2 lbs (0.9 kg) since the last treatment is concerning in a client undergoing hemodialysis with chronic renal failure as it may indicate fluid overload. This finding requires immediate reporting and intervention to prevent complications such as fluid retention, pulmonary edema, or exacerbation of heart failure. Choices A, C, and D are not findings that require immediate attention in this context. Clear dialysate outflow is a normal finding during hemodialysis, a blood pressure of 130/80 mm Hg is within a normal range for many clients, and a pulse rate of 72 bpm is also within the expected range for most individuals.
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