HESI LPN
HESI Fundamentals Study Guide
1. When admitting a 5-month-old who has vomited 9 times in the past 6 hours, what should the healthcare provider observe for signs of which overall imbalance?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Increased serum hemoglobin levels
- D. Decreased serum potassium levels
Correct answer: B
Rationale: When a 5-month-old infant vomits multiple times, there is a risk of developing metabolic alkalosis due to the loss of stomach acid. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. It is caused by the loss of hydrogen ions from the body, often through vomiting. Metabolic acidosis (choice A) is unlikely in this scenario because it is more commonly associated with conditions like renal failure or diabetic ketoacidosis. Choice C, increased serum hemoglobin levels, is not typically a direct consequence of vomiting. Choice D, decreased serum potassium levels, may occur with vomiting but is not the primary concern when a patient is vomiting excessively.
2. A client with a terminal illness is being educated by a healthcare provider about declining resuscitation in a living will. The client asks, “What would happen if I arrived at the ED and I had difficulty breathing?â€
- A. We would give you oxygen through a tube in your nose.
- B. We would initiate full resuscitation efforts.
- C. We would consult the living will and provide comfort care.
- D. We would not provide any medical intervention.
Correct answer: C
Rationale: In the scenario described, the client has a living will that declines resuscitation. Therefore, if the client arrives at the emergency department with difficulty breathing, healthcare providers would consult the living will to understand the client's wishes. Providing comfort care, which may include oxygen therapy to alleviate symptoms, aligns with the client's preferences. Option A incorrectly suggests an intervention that goes against the client's wishes. Option B is incorrect because full resuscitation efforts are not in line with the client's choice to decline resuscitation. Option D is also incorrect as it does not consider the client's living will and the need to provide care according to the documented preferences of the client.
3. While assisting a client with a meal, the client suddenly grabs at their neck with both hands and appears frightened. The appropriate nursing action is to:
- A. Ask the client if they are choking
- B. Perform abdominal thrusts
- C. Call for emergency help
- D. Check the client’s airway
Correct answer: A
Rationale: The correct action when a client suddenly grabs at their neck and appears frightened is to ask if they are choking. This allows the nurse to gather more information from the client directly. Performing abdominal thrusts (choice B) should only be done if the client is unable to speak, cough, or breathe. Calling for emergency help (choice C) should be done after assessing the situation and confirming choking. Checking the client's airway (choice D) is important but should come after confirming that the client is choking.
4. The nurse is providing wound care to a client with a stage 3 pressure ulcer that has a large amount of eschar. The wound care prescription states 'clean the wound and then apply collagenase.' Collagenase is a debriding agent. The prescription does not specify a cleaning method. Which technique should the nurse use to cleanse the pressure ulcer?
- A. Lightly coat the wound with povidone-iodine solution
- B. Irrigate the wound with sterile normal saline
- C. Flush the wound with sterile hydrogen peroxide
- D. Remove the eschar with a wet-to-dry dressing
Correct answer: B
Rationale: Irrigating the wound with sterile normal saline is the correct technique for cleansing a wound when the prescription does not specify a cleaning method. Sterile normal saline is a standard and safe solution that helps to remove debris and promote healing without damaging healthy tissue. Choice A, using povidone-iodine solution, can be cytotoxic and delay wound healing. Choice C, using hydrogen peroxide, can be cytotoxic, cause tissue damage, and delay wound healing. Choice D, using wet-to-dry dressing to remove eschar, is an outdated and non-selective method that can cause trauma to the wound bed and delay healing. Therefore, choice B is the best option for wound cleansing in this scenario.
5. A client with a diagnosis of hypertension is being assessed. Which symptom would be most concerning?
- A. Headache
- B. Blurred vision
- C. Dizziness
- D. Chest pain
Correct answer: D
Rationale: Chest pain in a client with hypertension is the most concerning symptom as it may indicate a myocardial infarction or other serious cardiac event related to hypertension. Immediate intervention is required to address potential life-threatening conditions. Headache, blurred vision, and dizziness are common symptoms associated with hypertension but are not typically indicative of an acute cardiac event requiring urgent attention.
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