HESI RN
HESI Medical Surgical Exam
1. The healthcare provider is assessing a client with chronic renal failure who is receiving hemodialysis. Which of the following findings would indicate that the client is experiencing a complication of the treatment?
- A. Clear dialysate outflow.
- B. Blood pressure of 150/90 mm Hg.
- C. Increased heart rate.
- D. Fatigue.
Correct answer: B
Rationale: A blood pressure of 150/90 mm Hg during hemodialysis may indicate fluid overload or an ineffective dialysis session, which can lead to complications such as heart failure or pulmonary edema. This finding should be reported promptly for further evaluation and intervention. Clear dialysate outflow is a normal and expected finding during hemodialysis, indicating proper filtration of waste products. Increased heart rate can be a normal compensatory response to hemodialysis due to fluid shifts and should be monitored but does not necessarily indicate a complication. Fatigue is a common symptom in clients with chronic renal failure undergoing hemodialysis and is not specific to complications of the treatment.
2. A nurse checks the residual volume from a client’s nasogastric tube feeding before administering an intermittent tube feeding and finds 35 mL of gastric contents. What should the nurse do before administering the prescribed 100 mL of formula to the client?
- A. Pour the residual volume into the nasogastric tube through a syringe with the plunger removed
- B. Discard the residual volume properly and record it as output on the client’s fluid balance record
- C. Dilute the residual volume with water and inject it into the nasogastric tube, applying pressure on the plunger
- D. Mix the residual volume with the formula and pour it into the nasogastric tube, using a syringe without a plunger
Correct answer: A
Rationale: After checking the residual feeding contents, the nurse should pour the residual volume back into the stomach by removing the syringe bulb or plunger and then pouring the gastric contents, using the syringe, into the nasogastric tube. This helps ensure that the residual volume is reintroduced into the client's gastrointestinal tract. Option B is incorrect because discarding the residual volume without reinstilling it into the stomach can lead to inaccurate medication administration and potential electrolyte imbalances. Option C is incorrect as diluting the residual volume with water and injecting it under pressure can cause aspiration or discomfort for the client. Option D is incorrect because mixing the residual volume with the formula can alter the prescribed dosage and consistency, potentially affecting the client's nutritional intake and causing complications.
3. The nurse assumes care for a patient who is currently receiving a dose of intravenous vancomycin (Vancocin) infusing at 20 mg/min. The nurse notes red blotches on the patient’s face, neck, and chest and assesses a blood pressure of 80/55 mm Hg. Which action will the nurse take?
- A. Request an order for IV epinephrine to treat anaphylactic shock.
- B. Slow the infusion to 10 mg/min and observe the patient closely.
- C. Stop the infusion and obtain an order for a BUN and serum creatinine.
- D. Suspect Stevens-Johnson syndrome and notify the provider immediately.
Correct answer: B
Rationale: When vancomycin is infused too rapidly, “red man” syndrome may occur; the rate should be 10 mg/min to prevent this. This is a toxic reaction, not an allergic one, so epinephrine is not indicated. Stevens-Johnson syndrome is characterized by a rash and fever. Red man syndrome is not related to renal function.
4. After pericardiocentesis for cardiac tamponade, for which signs should the nurse assess the client to determine if tamponade is recurring?
- A. Decreasing pulse
- B. Rising blood pressure
- C. Distant muffled heart sounds
- D. Falling central venous pressure (CVP)
Correct answer: C
Rationale: After pericardiocentesis for cardiac tamponade, the nurse should assess for distant muffled heart sounds that were noted before the procedure. If these sounds return, it could indicate recurring pericardial effusion and potential tamponade. Therefore, the correct answer is the return of distant muffled heart sounds (Option C). Decreasing pulse (Option A) and falling central venous pressure (Option D) are not specific signs of recurring tamponade. Rising blood pressure (Option B) is also not a typical sign of tamponade recurrence; in fact, hypotension is more commonly associated with tamponade.
5. The provider has ordered Kayexalate and sorbitol to be administered to a patient. The nurse caring for this patient would expect which serum electrolyte values prior to administration of this therapy?
- A. Sodium 125 mEq/L and potassium 2.5 mEq/L
- B. Sodium 150 mEq/L and potassium 3.6 mEq/L
- C. Sodium 135 mEq/L and potassium 6.9 mEq/L
- D. Sodium 148 mEq/L and potassium 5.5 mEq/L
Correct answer: C
Rationale: Severe hyperkalemia, with a potassium level of 6.9 mEq/L, requires aggressive treatment with Kayexalate and sorbitol to increase the body’s excretion of potassium. The normal range for serum potassium is 3.5 to 5.5 mEq/L, so patients with the other potassium levels would not be treated aggressively or would need potassium supplementation. Therefore, option C (Sodium 135 mEq/L and potassium 6.9 mEq/L) is the correct choice as it indicates severe hyperkalemia warranting the administration of Kayexalate and sorbitol. Options A, B, and D have either potassium levels within normal limits, which would not necessitate this aggressive treatment, or potassium levels that are lower than what would typically prompt the need for Kayexalate and sorbitol.
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