HESI LPN
HESI Fundamentals Study Guide
1. When reviewing a client’s fluid and electrolyte status, what should the nurse report to the provider?
- A. Potassium 5.4
- B. Sodium 140
- C. Calcium 8.6
- D. Magnesium 2.0
Correct answer: A
Rationale: The correct answer is A: 'Potassium 5.4'. A potassium level of 5.4 is elevated (normal range is typically 3.5-5.0 mEq/L) and may indicate hyperkalemia, which can have serious cardiac implications. Elevated potassium levels can lead to life-threatening arrhythmias, so immediate reporting and intervention are necessary. Choice B, 'Sodium 140', falls within the normal range (135-145 mEq/L) and does not require immediate reporting. Choice C, 'Calcium 8.6', falls within the normal range (8.5-10.5 mg/dL) and is not an immediate concern. Choice D, 'Magnesium 2.0', is within the normal range (1.5-2.5 mEq/L) and does not need urgent reporting. Therefore, the nurse should prioritize reporting the elevated potassium level as it poses the most immediate risk.
2. A healthcare professional is obtaining the blood pressure in a client's lower extremity. Which of the following actions should the healthcare professional take?
- A. Place the bladder of the cuff over the posterior aspect of the thigh
- B. Use a smaller cuff designed for lower extremities
- C. Place the cuff around the client's ankle
- D. Ensure the cuff is positioned above the knee
Correct answer: A
Rationale: When measuring blood pressure in the lower extremity, the bladder of the cuff should be placed over the posterior aspect of the thigh. This positioning ensures an accurate measurement. Placing the cuff around the ankle (Choice C) or above the knee (Choice D) would not provide an accurate blood pressure reading in the lower extremity. Using a smaller cuff designed for lower extremities (Choice B) is not appropriate as the standard cuff size should be used with the bladder placed over the posterior aspect of the thigh.
3. A caregiver of an immobile client requiring assistance with repositioning is being taught by a nurse on preventing back strain. Which statement by the caregiver indicates an understanding of the teaching?
- A. I will place the bed in the lowest position
- B. I will tighten my abdominal muscles prior to moving
- C. I will keep my legs straight to provide more power in the lift
- D. I will twist at the waist while pulling the draw sheet
Correct answer: B
Rationale: The correct answer is B. Tightening the abdominal muscles before moving helps protect the back by providing core support. Keeping the legs straight (choice C) is incorrect as bending the legs is recommended to provide a stable base and prevent strain on the back. Twisting at the waist (choice D) while moving can cause back injury due to the strain on the spine. Placing the bed in the lowest position (choice A) is not directly related to preventing back strain during client repositioning, although it may be necessary for other reasons.
4. A client is admitted with infective endocarditis (IE). Which symptom would alert the nurse to a complication of this condition?
- A. Dyspnea
- B. Heart murmur
- C. Macular rash
- D. Hemorrhage
Correct answer: B
Rationale: A new or changed heart murmur is a common sign of valve involvement in infective endocarditis, indicating a complication such as valve damage or regurgitation. Dyspnea is more commonly associated with respiratory or cardiac conditions not directly related to infective endocarditis. A macular rash is not a typical symptom of infective endocarditis, suggesting other conditions like infectious diseases. Hemorrhage is not a direct complication of infective endocarditis but may occur due to factors such as anticoagulant therapy or underlying bleeding disorders.
5. While suctioning a client's nasopharynx, the nurse observes that the client's oxygen saturation remains at 94%, which is the same reading obtained prior to starting the procedure. What action should the nurse take in response to this finding?
- A. Complete the intermittent suction of the nasopharynx.
- B. Reposition the pulse oximeter clip to obtain a new reading.
- C. Stop suctioning until the pulse oximeter reading is above 95%.
- D. Apply an oxygen mask over the client's nose and mouth.
Correct answer: A
Rationale: The correct action for the nurse to take in this situation is to complete the intermittent suction of the nasopharynx. Since the oxygen saturation remains stable at 94%, which was the initial reading, it indicates that the procedure is not causing a significant drop in oxygen levels. Stopping the suctioning or applying oxygen may not be necessary as the saturation level is within an acceptable range. Repositioning the pulse oximeter clip is unlikely to change the reading significantly. Therefore, completing the procedure maintains care consistency and effectiveness, ensuring proper airway management without unnecessary interventions. Choices B, C, and D are incorrect because repositioning the pulse oximeter clip, stopping suctioning until a higher reading is achieved, and applying oxygen are not warranted based on the stable oxygen saturation level of 94% throughout the procedure.
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