HESI RN
HESI Medical Surgical Specialty Exam
1. The nurse is preparing to administer the first dose of intravenous ceftriaxone (Rocephin) to a patient. When reviewing the patient’s chart, the nurse notes that the patient previously experienced a rash when taking amoxicillin. What is the nurse’s next action?
- A. Administer the drug and observe closely for hypersensitivity reactions.
- B. Ask the provider whether a cephalosporin from a different generation may be used.
- C. Contact the provider to report drug hypersensitivity.
- D. Notify the provider and suggest an oral cephalosporin.
Correct answer: A
Rationale: When a patient has a history of a rash with amoxicillin, a beta-lactam antibiotic like ceftriaxone should be administered cautiously due to a possible cross-reactivity. The nurse should still administer the drug but closely monitor the patient for any signs of hypersensitivity reactions. Asking for a different generation of cephalosporin or suggesting an oral form does not address the potential cross-reactivity issue. Contacting the provider to report drug hypersensitivity would delay care when the patient needs immediate treatment.
2. A client with chronic obstructive pulmonary disease (COPD) presented with shortness of breath. Oxygen therapy was started at 2 liters/minute via nasal cannula. The arterial blood gases (ABGs) after treatment were pH 7.36, PaO2 62, PaCO2 59, and HCO3. Which statement describes the most likely cause of the simultaneous increase in both the PaO2 and the PaCO2?
- A. The hypercapnia resulted from the rapid respirations.
- B. The hypoxic drive was reduced by the oxygen therapy.
- C. The client had a pneumothorax which restricted ventilation.
- D. The client had a pulmonary embolism that reduced perfusion.
Correct answer: B
Rationale: In patients with COPD, oxygen therapy can reduce the hypoxic drive, which is the primary stimulus for breathing in these individuals. By providing supplemental oxygen, the hypoxic drive is diminished, resulting in decreased respiratory effort. As a consequence, the PaO2 may increase due to the supplemental oxygen, but this can lead to a decrease in the respiratory drive and subsequent retention of carbon dioxide, causing an increase in PaCO2 levels. Option A is incorrect because rapid respirations would typically lower PaCO2 levels. Option C is incorrect as a pneumothorax would lead to impaired gas exchange and decreased PaO2 levels without necessarily affecting PaCO2 levels. Option D is incorrect as a pulmonary embolism would typically result in ventilation-perfusion mismatch and decreased PaO2 levels without directly impacting PaCO2 levels.
3. The nurse explains to the client with Hodgkin's disease that a bone marrow biopsy will be taken after the aspiration. What should the nurse explain about the biopsy?
- A. The biopsy will confirm the diagnosis of Hodgkin's disease.
- B. The biopsy will show the extent of the disease in the bones.
- C. The biopsy will be done to check for infection in the bones.
- D. The biopsy will help determine the best treatment for the disease.
Correct answer: D
Rationale: A bone marrow biopsy helps determine the best treatment plan for Hodgkin's disease by providing crucial information about the extent and nature of the disease. While confirming the diagnosis is important, the primary purpose of the biopsy in this case is to guide treatment decisions. The biopsy is not primarily for assessing the extent of the disease in the bones or checking for infections in the bones.
4. A client is hospitalized in the oliguric phase of acute kidney injury (AKI) and is receiving tube feedings. The nurse is teaching the client’s spouse about the kidney-specific formulation for the enteral solution compared to standard formulas. What components should be discussed in the teaching plan? (Select all that apply.)
- A. Lower sodium
- B. Lower potassium
- C. Higher phosphorus
- D. A & B
Correct answer: D
Rationale: In the oliguric phase of acute kidney injury (AKI), clients may require tube feedings with kidney-specific formulas. These formulations are lower in sodium and potassium, which are crucial considerations due to impaired kidney function. Higher phosphorus content is not a feature of kidney-specific formulations for AKI. Therefore, options A and B (lower sodium and lower potassium) should be discussed in the teaching plan. Option C, higher phosphorus, is incorrect as kidney-specific formulas are not intended to be higher in phosphorus content for AKI patients.
5. When assessing an individual with peripheral vascular disease, which clinical manifestation would indicate complete arterial obstruction in the lower left leg?
- A. Aching pain in the left calf.
- B. Burning pain in the left calf.
- C. Numbness and tingling in the left leg.
- D. Coldness of the left foot and ankle.
Correct answer: D
Rationale: Coldness of the left foot and ankle is the correct clinical manifestation indicating complete arterial obstruction in the lower left leg. Complete arterial obstruction results in reduced blood flow, leading to decreased temperature in the affected area. Aching pain (Choice A) and burning pain (Choice B) are more commonly associated with partial obstructions or ischemia, while numbness and tingling (Choice C) can be indicative of nerve involvement or compromised circulation, but not specifically complete arterial obstruction. The coldness in the foot and ankle is a result of severely reduced blood flow, which impairs the delivery of oxygen and nutrients to the tissues in that area, leading to a lower temperature. This symptom is a critical indicator of a more severe blockage compared to the other options provided.
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