HESI RN
HESI Medical Surgical Assignment Exam
1. 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.
2. A client receives a prescription for 1 liter of lactated Ringer's intravenously to be infused over 6 hours. How many mL/hr should the nurse program the infusion pump to deliver? (Enter numerical value only. If rounding is needed, round to the nearest whole number.)
- A. 167 mL/hr
- B. 200 mL/hr
- C. 83 mL/hr
- D. 111 mL/hr
Correct answer: A
Rationale: The correct infusion rate is 167 mL/hr. This is calculated by dividing the total volume (1000 mL) by the total time (6 hours), resulting in 166.67 mL/hr, which should be rounded to the nearest whole number as 167 mL/hr. This calculation ensures a steady infusion rate over the specified time frame. Choices B, C, and D are incorrect as they do not accurately reflect the correct calculation based on the volume and time provided in the prescription.
3. An adult client who received partial thickness burns on 40% of the body in a house fire is admitted to the inpatient burn unit. Which fluid should the nurse prepare to administer during the client's burn recovery?
- A. 5% dextrose in water
- B. 5% dextrose in 0.25 normal saline
- C. Total parenteral nutrition
- D. Lactated Ringer's
Correct answer: D
Rationale: During the burn recovery phase, the nurse should prepare to administer Lactated Ringer's solution. Lactated Ringer's is the preferred fluid choice for burn patients as it helps replace lost fluids and electrolytes, maintain perfusion, and support organ function. Option A, 5% dextrose in water, is not the appropriate choice for fluid resuscitation in burn patients. Option B, 5% dextrose in 0.25 normal saline, does not provide the necessary electrolytes needed for burn recovery. Option C, Total parenteral nutrition, may be considered later in the treatment but is not the initial fluid of choice for burn recovery.
4. A nurse is assessing the chest tube drainage system of a postoperative client who has undergone a right upper lobectomy. The closed drainage system contains 300 mL of bloody drainage, and the nurse notes intermittent bubbling in the water seal chamber. One hour after the initial assessment, the nurse notes that the bubbling in the water seal chamber is now constant, and the client appears dyspneic. On the basis of these findings, the nurse should first assess:
- A. The client’s vital signs
- B. The amount of drainage
- C. The client’s lung sounds
- D. The chest tube connections
Correct answer: D
Rationale: The client’s dyspnea is most likely related to an air leak caused by a loose connection in the chest tube system. Checking the chest tube connections should be the initial action because correcting an air leak can quickly resolve the client's symptoms. If a leak is found and corrected, the dyspnea should improve. Assessing the client’s vital signs (Option A) is important, but addressing the potential cause of dyspnea takes precedence. Monitoring the amount of drainage (Option B) is necessary for assessing the client's overall condition, but in this case, the dyspnea is likely due to an air leak. Checking the client’s lung sounds (Option C) is essential for respiratory assessment, but addressing the air leak should be the immediate priority to ensure adequate lung expansion and oxygenation.
5. The nurse is caring for a patient who is ordered to receive PO trimethoprim-sulfamethoxazole (TMP-SMX) 160/800 QID to treat a urinary tract infection caused by E. coli. The nurse will contact the provider to clarify the correct
- A. dose.
- B. drug.
- C. frequency.
- D. route.
Correct answer: C
Rationale: The correct answer is 'frequency.' Trimethoprim-sulfamethoxazole (TMP-SMX) is typically prescribed to be taken twice daily, not four times a day (QID). The dose, drug, and route are already specified in the order, so the nurse should contact the provider to clarify the frequency of administration to ensure optimal treatment for the urinary tract infection caused by E. coli. Choosing 'dose' is incorrect because the dose of 160/800 is already provided in the order. 'Drug' is incorrect because the medication Trimethoprim-sulfamethoxazole (TMP-SMX) is explicitly stated in the prescription. 'Route' is incorrect as PO (by mouth) is also clearly indicated in the prescription.
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