HESI LPN
HESI Fundamentals Study Guide
1. A healthcare professional is preparing to inject heparin subcutaneously for a client who is postoperative. Which of the following actions should the healthcare professional take?
- A. Use a 25-gauge needle.
- B. Select a site on the client’s abdomen.
- C. Use the Z-track technique to displace the skin on the injection site.
- D. Observe for bleb formation to confirm proper placement.
Correct answer: B
Rationale: For subcutaneous injections like heparin, a 25-27 gauge needle is recommended, making choice A incorrect. The abdomen is a commonly used site for heparin injection due to its consistent absorption and convenience, making choice B the correct answer. The Z-track technique is not necessary for subcutaneous injections, making choice C unnecessary. Observing for bleb formation is not a standard practice for confirming proper placement of subcutaneous heparin, making choice D incorrect. Therefore, the correct action is to select a site on the client's abdomen for the injection.
2. When assessing a client's skin as part of a comprehensive physical examination, what finding should a nurse expect?
- A. Capillary refill less than 3 seconds
- B. 1+ pitting edema in both feet
- C. Pale nail beds in both hands
- D. Thick skin on the soles of the feet
Correct answer: A
Rationale: The correct answer is A: Capillary refill less than 3 seconds. This finding is considered normal and indicates good peripheral perfusion. Pitting edema (choice B) and pale nail beds (choice C) are abnormal findings that may suggest underlying health issues. Thick skin on the soles of the feet (choice D) is not an expected normal finding during a skin assessment and could be indicative of a callus or other skin condition.
3. The healthcare provider prescribes 1,000 ml of Ringer's Lactate with 30 Units of Pitocin to run over 4 hours for a client who has just delivered a 10-pound infant by cesarean section. The tubing has been changed to a 20 gtt/ml administration set. The LPN/LVN plans to set the flow rate at how many gtt/min?
- A. 42 gtt/min
- B. 83 gtt/min
- C. 125 gtt/min
- D. 250 gtt/min
Correct answer: B
Rationale: To calculate the flow rate in drops per minute (gtt/min), the formula is Total volume (mL) ÷ Time (min) ÷ Drop factor (gtt/mL). In this case, 1000 mL ÷ 240 min ÷ 20 gtt/mL = 83 gtt/min. Therefore, setting the flow rate to 83 gtt/min ensures the correct administration of the IV fluids and medication. Choices A, C, and D are incorrect as they do not align with the correct calculation based on the provided information.
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 nurse on a surgical unit is receiving a client who had abdominal surgery from the postanesthesia care unit. Which of the following assessments should the nurse make first?
- A. Airway
- B. Blood pressure
- C. Surgical site
- D. Level of consciousness
Correct answer: A
Rationale: The correct answer is to assess the airway first. Ensuring a clear and patent airway is crucial to maintaining adequate oxygenation and ventilation post-surgery. Assessing the airway takes precedence over other assessments as a compromised airway can lead to hypoxia and respiratory distress. Checking blood pressure, the surgical site, or level of consciousness are important but are secondary to ensuring the airway is clear and the client can breathe effectively.
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