HESI LPN
Fundamentals HESI
1. A client has a sodium level of 125. What findings should the nurse expect?
- A. Abdominal cramping
- B. Elevated blood pressure
- C. Decreased heart rate
- D. Increased thirst
Correct answer: A
Rationale: Low sodium levels (hyponatremia) often present with various symptoms, including abdominal cramping. Abdominal cramping is a common manifestation of hyponatremia due to the altered electrolyte balance. Option B ('Elevated blood pressure') is incorrect because low sodium levels typically lead to decreased blood pressure, not elevated. Option C ('Decreased heart rate') is incorrect as low sodium levels are more likely to cause an irregular heart rate rather than a decreased heart rate. Option D ('Increased thirst') is incorrect because excessive thirst is more commonly associated with high sodium levels (hypernatremia) rather than low sodium levels.
2. When performing cardiac chest compressions, what is a critical concept that the nurse must understand?
- A. Push hard and deep on the chest
- B. Compress the chest at a rapid rate
- C. Perform compressions with minimal interruptions
- D. Use a two-handed technique for compressions
Correct answer: A
Rationale: The correct answer is to 'Push hard and deep on the chest.' Effective chest compressions during CPR should be forceful and deep enough to adequately circulate blood to vital organs. This helps maintain perfusion and increases the likelihood of a successful outcome. Compressing the chest at a rapid rate (choice B) is important but not as critical as ensuring the compressions are hard and deep. Performing compressions with minimal interruptions (choice C) is also crucial to maintain blood flow. Using a two-handed technique for compressions (choice D) may be helpful but is not as critical as the depth and force of the compressions.
3. 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.
4. A client requires gastric decompression, and a nurse is inserting an NG tube. Which action should the nurse take to verify proper placement of the tube?
- A. Assess the client for a gag reflex
- B. Measure the pH of the gastric aspirate
- C. Place the end of the NG tube in water to observe for bubbling
- D. Auscultate 2.5 cm (1 in) above the umbilicus while injecting 15 mL of sterile water
Correct answer: B
Rationale: Measuring the pH of the gastric aspirate is the most reliable method to confirm proper placement of an NG tube. Gastric fluid has an acidic pH, typically ranging from 1 to 5. Assessing the client for a gag reflex (choice A) is important for airway protection but does not confirm tube placement. Placing the NG tube in water to observe for bubbling (choice C) is incorrect and not a reliable method for verifying placement. Auscultating 2.5 cm above the umbilicus while injecting sterile water (choice D) is an outdated method and is not recommended for verifying NG tube placement.
5. A healthcare professional reviewing a client’s health record notes a new prescription for lisinopril 10 mg PO once daily. The healthcare professional should identify this as which of the following types of prescription?
- A. Single
- B. Stat
- C. Routine
- D. Now
Correct answer: C
Rationale: A prescription for once-daily medication is considered routine as it is meant for regular, daily administration to maintain therapeutic levels in the body. Single prescriptions are for one-time use only. Stat prescriptions are for immediate administration in urgent situations, while now prescriptions are also for immediate use but may have varying levels of urgency depending on the patient's condition. In this case, since the prescription is for once daily use, it falls under the category of routine prescription.
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