HESI RN
HESI Medical Surgical Specialty Exam
1. A client in the postanesthesia care unit has an as-needed prescription for ondansetron (Zofran). Which of the following occurrences would prompt the nurse to administer this medication to the client?
- A. Paralytic ileus
- B. Incisional pain
- C. Urine retention
- D. Nausea and vomiting
Correct answer: D
Rationale: The correct answer is D: Nausea and vomiting. Ondansetron is an antiemetic used to manage postoperative nausea and vomiting, as well as nausea and vomiting related to chemotherapy. It is not indicated for treating paralytic ileus, incisional pain, or urine retention. Paralytic ileus is a condition of the gastrointestinal tract characterized by the paralysis of intestinal muscles, which would not be treated with ondansetron. Incisional pain is typically managed with analgesics, not antiemetics. Urine retention is a urinary issue that does not involve nausea and vomiting, making ondansetron an inappropriate choice for this condition.
2. A 57-year-old male client is scheduled to have a stress-thallium test the following morning and is NPO after midnight. At 0130, he is agitated because he cannot eat and is demanding food. Which response is best for the nurse to provide to this client?
- A. I'm sorry sir, you have a prescription for nothing by mouth from midnight tonight.
- B. I will let you have one cracker, but that is all you can have for the rest of tonight.
- C. What did the healthcare provider tell you about the test you are having tomorrow?
- D. The test you are having tomorrow requires that you have nothing by mouth tonight.
Correct answer: D
Rationale: Being direct and explaining to the client that the test requires him to be NPO, is the most therapeutic statement because the nurse is responding to the client's question and providing him the reason why.
3. A serum phenytoin determination is prescribed for a client with a seizure disorder who is taking phenytoin (Dilantin). Which result indicates that the prescribed dose of phenytoin is therapeutic?
- A. 3 mcg/mL
- B. 8 mcg/mL
- C. 16 mcg/mL
- D. 28 mcg/mL
Correct answer: C
Rationale: The correct answer is 16 mcg/mL (Choice C). The therapeutic serum phenytoin range is typically 10 to 20 mcg/mL. A level below this range may lead to continued seizure activity, indicating subtherapeutic levels. Choices A, B, and D are below the therapeutic range and would not be considered therapeutic for a client with a seizure disorder on phenytoin therapy.
4. A client is admitted with acute kidney injury (AKI) and a urine output of 2000 mL/day. What is the major concern of the nurse regarding this client’s care?
- A. Edema and pain
- B. Electrolyte and fluid imbalance
- C. Cardiac and respiratory status
- D. Mental health status
Correct answer: B
Rationale: The major concern for a client admitted with acute kidney injury (AKI) and a high urine output of 2000 mL/day is electrolyte and fluid imbalance. In AKI, there may be an inflammatory cause leading to proteins entering the glomerulus, resulting in fluid being held in the filtrate and causing polyuria. Electrolyte loss and fluid balance are critical to monitor and manage in AKI cases. Edema and pain are not typically associated with fluid loss. While changes in cardiac, respiratory, and mental health status can occur if electrolyte imbalance is not addressed, the primary focus should be on managing electrolyte and fluid balance to prevent further complications.
5. The nurse is caring for a patient who has had severe vomiting. The patient’s serum sodium level is 130 mEq/L. The nurse will expect the patient’s provider to order which treatment?
- A. Diuretic therapy
- B. Intravenous hypertonic 5% saline
- C. Intravenous normal saline 0.9%
- D. Oral sodium supplements
Correct answer: C
Rationale: In this scenario, the patient has hyponatremia with a serum sodium level of 130 mEq/L. For a serum sodium level between 125 and 135 mEq/L, the appropriate treatment is intravenous normal saline 0.9%. Normal saline helps to increase the sodium content in the vascular fluid. Diuretic therapy would exacerbate sodium and fluid depletion, which is not suitable for a patient already dehydrated from severe vomiting. Intravenous hypertonic 5% saline is typically reserved for severe hyponatremia with a serum sodium level below 120 mEq/L. Oral sodium supplements are not feasible in this case as the patient is vomiting and may not be able to tolerate oral intake easily.
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