HESI LPN
Adult Health 1 Final Exam
1. The nurse is preparing to administer a subcutaneous injection of heparin. What is the correct angle of insertion?
- A. 15 degrees
- B. 30 degrees
- C. 45 degrees
- D. 90 degrees
Correct answer: C
Rationale: The correct angle of insertion for a subcutaneous injection, such as heparin, is 45 degrees. This angle is appropriate as it helps to ensure proper delivery of the medication into the subcutaneous tissue. Option A (15 degrees) is too shallow for a subcutaneous injection and may result in the medication being deposited into the muscle. Option B (30 degrees) is also too shallow for subcutaneous injections. Option D (90 degrees) is used for intramuscular injections, not subcutaneous injections.
2. The healthcare provider is caring for a client with a chest tube following a pneumothorax. Which assessment finding should be reported to the healthcare provider immediately?
- A. Continuous bubbling in the water seal chamber
- B. Absence of drainage in the collection chamber
- C. Tidaling in the water seal chamber
- D. Presence of subcutaneous emphysema around the insertion site
Correct answer: A
Rationale: Continuous bubbling in the water seal chamber should be reported to the healthcare provider immediately. This finding may indicate an air leak, which can compromise the effectiveness of the chest tube in re-expanding the lung. Absence of drainage in the collection chamber (choice B) may signify that the chest tube is blocked, but it does not pose an immediate threat to the client's condition. Tidaling in the water seal chamber (choice C) is an expected finding and indicates proper functioning of the chest tube system. Presence of subcutaneous emphysema around the insertion site (choice D) suggests air leakage but is not as urgent as continuous bubbling in the water seal chamber.
3. A client with diabetes mellitus is scheduled for surgery. What is the most important preoperative instruction the nurse should provide?
- A. Take your insulin as usual
- B. Do not eat or drink after midnight
- C. Monitor your blood glucose closely
- D. Bring your glucose meter to the hospital
Correct answer: B
Rationale: The most important preoperative instruction for a client with diabetes mellitus scheduled for surgery is to instruct them not to eat or drink after midnight. This instruction is crucial to maintain NPO (nothing by mouth) status before surgery, reducing the risk of aspiration during anesthesia. While taking insulin as usual (Choice A) is important, doses can be adjusted by the healthcare team. Monitoring blood glucose closely (Choice C) is essential but not as critical preoperatively. Bringing a glucose meter to the hospital (Choice D) can be helpful but is not as vital as maintaining NPO status.
4. Which intervention is most effective in preventing the spread of infection in a healthcare setting?
- A. Wearing gloves
- B. Using hand sanitizer
- C. Practicing hand hygiene
- D. Disinfecting surfaces
Correct answer: C
Rationale: Practicing hand hygiene is the most effective measure to prevent the spread of infection in healthcare settings. While wearing gloves, using hand sanitizer, and disinfecting surfaces are important infection control measures, they are not as effective as proper hand hygiene. Hand hygiene, including handwashing with soap and water or using alcohol-based hand sanitizers, is crucial in preventing the transmission of pathogens from one person to another, making it the best choice among the options provided. Wearing gloves primarily protects the wearer and is not a substitute for hand hygiene. Using hand sanitizer is helpful but may not be as effective as proper handwashing. Disinfecting surfaces is important but does not address the direct transmission of pathogens through hand contact, which hand hygiene effectively prevents.
5. When inserting an indwelling urinary catheter in a female client and urine flows into the tubing, what is the next action?
- A. Document the color and clarity of the urine
- B. Insert the catheter an additional inch
- C. Ask the client to breathe deeply and slowly exhale
- D. Inflate the balloon with 5 mL of sterile water
Correct answer: D
Rationale: When urine flows into the tubing during the insertion of an indwelling urinary catheter, it confirms proper catheter placement. The next step should be to inflate the balloon with the specified amount of sterile water to secure the catheter in place. Documenting the color and clarity of the urine (choice A) is important for assessment but not the immediate next action. Inserting the catheter further (choice B) without securing it could cause harm. Asking the client to breathe deeply (choice C) is not relevant to this situation.
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