HESI RN
HESI Medical Surgical Specialty Exam
1. A patient taking trimethoprim-sulfamethoxazole (TMP-SMX) to treat a urinary tract infection complains of a sore throat. The nurse will contact the provider to request an order for which laboratory test(s)?
- A. Complete blood count with differential
- B. Throat culture
- C. Urinalysis
- D. Coagulation studies
Correct answer: A
Rationale: When a patient taking trimethoprim-sulfamethoxazole (TMP-SMX) for a urinary tract infection presents with a sore throat, the nurse should request a complete blood count with differential. TMP-SMX can cause life-threatening adverse effects such as agranulocytosis, a condition characterized by a low white blood cell count, which can manifest as a sore throat. Ordering a complete blood count with differential helps assess the patient's white blood cell count to detect any potential serious adverse effects. Throat culture (Choice B) is not indicated unless there are specific signs of a throat infection. Urinalysis (Choice C) is not relevant for assessing a sore throat. Coagulation studies (Choice D) are not typically indicated for a sore throat symptom.
2. After confirming that liquids are allowed, which assessment action should the nurse consider a priority for a client who is fully awake after a gastroscopy?
- A. Listen to bilateral lung and bowel sounds.
- B. Obtain the client's pulse and blood pressure.
- C. Assist the client to the bathroom to void.
- D. Check the client's gag and swallow reflexes.
Correct answer: D
Rationale: After a gastroscopy, it is crucial for the nurse to prioritize checking the client's gag and swallow reflexes before allowing them to drink anything. This is because the effects of local anesthesia need to dissipate, and the airway's protective reflexes, including the gag and swallow reflexes, must have returned to prevent aspiration. Listening to lung and bowel sounds (Choice A) may be important but does not take precedence over ensuring the client's safety post-gastroscopy. Obtaining the client's pulse and blood pressure (Choice B) is also important but not the priority in this scenario. Assisting the client to the bathroom to void (Choice C) is a routine nursing action and is not directly related to the immediate safety concern of checking the client's gag and swallow reflexes post-gastroscopy.
3. A client has a urine specific gravity of 1.040. What action should the nurse take?
- A. Obtain a urine culture and sensitivity.
- B. Place the client on restricted fluids.
- C. Assess the client’s creatinine level.
- D. Increase the client’s fluid intake.
Correct answer: D
Rationale: A urine specific gravity of 1.040 is higher than the normal range (1.005 to 1.030) and can indicate dehydration, decreased kidney blood flow, or the presence of antidiuretic hormone. In this situation, the priority action should be to increase the client's fluid intake to address the high specific gravity. Obtaining a urine culture, placing the client on restricted fluids, or assessing the creatinine level would not directly address the underlying issue of high urine specific gravity caused by dehydration or other factors.
4. A young adult client, admitted to the Emergency Department following a motor vehicle collision, is transfused with 4 units of PRBCs (packed red blood cells). The client's pretransfusion hematocrit is 17%. Which hematocrit value should the nurse expect the client to have after all the PRBCs have been transfused?
- A. 0.19
- B. 0.09
- C. 0.39
- D. 0.29
Correct answer: D
Rationale: The expected increase in hematocrit after transfusion is approximately 3% per unit of PRBCs. Since the client received 4 units, the expected increase would be 4 x 3% = 12%. Therefore, adding this to the pretransfusion hematocrit of 17% would result in an expected post-transfusion hematocrit of 29%. Choice A (0.19) is incorrect as it doesn't consider the incremental increase per unit of PRBCs. Choices B (0.09) and C (0.39) are also incorrect as they do not align with the expected increase in hematocrit following the transfusion of 4 units of PRBCs.
5. The healthcare provider prescribes diagnostic tests for a client with pneumonia identified on a chest X-ray. Which diagnostic test should the nurse review for implementation to guide the most therapeutic treatment of pneumonia?
- A. Sputum culture and sensitivity
- B. Blood cultures
- C. Arterial blood gases (ABG)
- D. Computerized tomography (CT) of the chest
Correct answer: A
Rationale: Sputum culture and sensitivity is the most appropriate diagnostic test for pneumonia as it helps in identifying the causative organism, which is crucial for guiding the selection of the most effective antibiotic therapy. Blood cultures (choice B) are more useful in identifying systemic infections rather than pneumonia specifically. Arterial blood gases (ABG) (choice C) are helpful in assessing oxygenation but do not directly aid in identifying the causative organism. Computerized tomography (CT) of the chest (choice D) is useful for evaluating structural abnormalities in the lungs but is not the initial test of choice for diagnosing pneumonia.
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