HESI LPN
HESI Practice Test for Fundamentals
1. A healthcare provider is caring for several clients who are receiving oxygen therapy. Which client should the provider assess most frequently for manifestations of oxygen toxicity?
- A. 100% oxygen via partial rebreathing mask
- B. 2 liters per minute via nasal cannula
- C. 4 liters per minute via simple mask
- D. 6 liters per minute via face mask
Correct answer: A
Rationale: When a client is receiving 100% oxygen via a partial rebreathing mask, there is a higher risk for oxygen toxicity due to the higher concentration of oxygen delivered. This client should be assessed most frequently for manifestations of oxygen toxicity. Choices B, C, and D are less likely to result in oxygen toxicity compared to 100% oxygen delivery via a partial rebreathing mask.
2. The healthcare provider is caring for a client with a history of hypertension. Which assessment finding would be most concerning?
- A. Blood pressure of 150/90 mmHg
- B. Irregular heart rate
- C. Shortness of breath
- D. Headache
Correct answer: C
Rationale: Shortness of breath in a client with a history of hypertension is a critical assessment finding as it may indicate heart failure, pulmonary edema, or other severe complications. The development of shortness of breath suggests that the client's condition may be rapidly deteriorating and requires immediate medical attention. Elevated blood pressure (150/90 mmHg) is concerning but not as acute as the potential complications associated with shortness of breath. An irregular heart rate and headache can also be symptoms of hypertension, but in this scenario, shortness of breath poses a higher risk of severe cardiovascular or respiratory issues.
3. A client receives the influenza vaccine in a clinic. Within 15 minutes after the immunization, the client complains of itchy and watery eyes, increased anxiety, and difficulty breathing. What should be the first action in the sequence of care for this client?
- A. Maintain the airway
- B. Administer epinephrine 1:1000 as ordered
- C. Monitor for hypotension with shock
- D. Administer diphenhydramine as ordered
Correct answer: B
Rationale: In the scenario described, the client is experiencing symptoms of an anaphylactic reaction, a severe allergic response. The priority action in an anaphylactic reaction is to administer epinephrine. Epinephrine helps counteract the severe allergic response, improves breathing difficulties, and maintains airway and circulation. Administering epinephrine takes precedence to stabilize the client's condition. Options A, C, and D may be necessary in the management of anaphylaxis, but the immediate priority is to administer epinephrine to address the life-threatening symptoms.
4. A nurse is collecting data from a client who is receiving IV therapy and reports pain in the arm, chills, and 'not feeling well.' The nurse notes warmth, edema, induration, and red streaking on the client’s arm close to the IV insertion site. Which of the following actions should the nurse plan to take first?
- A. Obtain a specimen for culture.
- B. Apply a warm compress.
- C. Administer analgesics.
- D. Discontinue the infusion.
Correct answer: D
Rationale: Discontinuing the infusion is the first step in addressing potential complications such as phlebitis or infection. It is crucial to prevent further infusion-related damage by stopping the source of the issue. Obtaining a specimen for culture (Choice A) can be considered later to identify the specific microorganism causing the infection. Applying a warm compress (Choice B) or administering analgesics (Choice C) may provide comfort but do not address the underlying issue of infection or phlebitis, which requires immediate intervention by discontinuing the infusion.
5. Which nutritional assessment data should be collected to best reflect total muscle mass in an adolescent?
- A. Height in inches or centimeters.
- B. Weight in kilograms or pounds.
- C. Triceps skinfold thickness.
- D. Upper arm circumference.
Correct answer: D
Rationale: The correct answer is 'Upper arm circumference.' Upper arm circumference is a better indicator of total muscle mass in adolescents compared to height, weight, or triceps skinfold thickness. Triceps skinfold thickness primarily reflects subcutaneous fat, while weight and height are not specific to muscle mass. Upper arm circumference directly measures the muscle mass in the upper arm and can provide a more accurate assessment in this context. Therefore, choices A, B, and C are incorrect because they do not directly reflect total muscle mass in adolescents.
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