HESI LPN
HESI Fundamentals Study Guide
1. A client has been admitted to the hospital with severe diarrhea. The nurse should monitor the client for which complication?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Hyperkalemia
- D. Hypercalcemia
Correct answer: A
Rationale: Severe diarrhea can lead to metabolic acidosis due to the loss of bicarbonate. When there is excessive loss of bicarbonate through diarrhea, the pH of the blood decreases, leading to metabolic acidosis. Metabolic alkalosis (Choice B) is not typically associated with severe diarrhea as it involves elevated pH and bicarbonate levels. Hyperkalemia (Choice C) is less likely with severe diarrhea as potassium is often lost along with fluids. Hypercalcemia (Choice D) is not a common complication of severe diarrhea; instead, hypocalcemia may occur due to malabsorption of calcium.
2. What is the most important action for the nurse to take to prevent infection in a client who has just returned from surgery with an indwelling urinary catheter in place?
- A. Change the catheter every 72 hours.
- B. Ensure the catheter tubing is free of kinks.
- C. Clean the perineal area with antiseptic solution daily.
- D. Irrigate the catheter with normal saline every shift.
Correct answer: B
Rationale: The most important action to prevent infection in a client with an indwelling urinary catheter is to ensure the catheter tubing is free of kinks. This action helps prevent obstruction, ensures proper drainage, and reduces the risk of infection. Changing the catheter every 72 hours is not necessary unless clinically indicated and may introduce unnecessary risk. Cleaning the perineal area with antiseptic solution daily is important for general hygiene but not the most critical action for catheter-related infection prevention. Irrigating the catheter with normal saline every shift is not a routine nursing intervention for catheter care and may increase the risk of introducing pathogens.
3. The healthcare professional is caring for a client with a chest tube. Which observation requires immediate intervention?
- A. Constant bubbling in the suction control chamber
- B. Intermittent bubbling in the water seal chamber
- C. Drainage of 50 ml per hour
- D. Crepitus around the insertion site
Correct answer: D
Rationale: Crepitus around the chest tube insertion site may indicate subcutaneous emphysema, which requires immediate attention. The presence of crepitus suggests air leaking into the tissues, which could lead to respiratory compromise. Constant bubbling in the suction control chamber is expected and indicates proper functioning of the chest tube system. Intermittent bubbling in the water seal chamber is also normal, showing the system is intact. Drainage of 50 ml per hour is within the expected range for a chest tube.
4. An 18-year-old client is admitted to the intensive care unit from the emergency room following a diving accident. The injury is suspected to be at the level of the 2nd cervical vertebra. The nurse's priority assessment should be
- A. Response to stimuli
- B. Bladder control
- C. Respiratory function
- D. Muscle strength
Correct answer: C
Rationale: Injuries at the level of the 2nd cervical vertebra can affect the phrenic nerve, leading to potential impairment of respiratory function. Assessing respiratory function is crucial as compromised breathing can quickly escalate to life-threatening situations. While response to stimuli is important, ensuring adequate oxygenation takes precedence due to the immediate threat to life. Bladder control may be affected by spinal cord injuries at higher levels, but it is not the priority in this scenario. Muscle strength is a potential consequence of cervical spinal cord injury, but assessing respiratory function is more critical in the acute phase.
5. Which action is most important for maintaining sterility when donning sterile gloves?
- A. Maintain thumbs at a ninety-degree angle.
- B. Hold hands with fingers pointing downward while gloving.
- C. Keep gloved hands above the elbows.
- D. Put the glove on the dominant hand first.
Correct answer: C
Rationale: The most crucial action for maintaining sterility when donning sterile gloves is to keep gloved hands above the elbows. This practice is essential to prevent potential contamination and maintain a sterile field. Choices A, maintaining thumbs at a ninety-degree angle, and B, holding hands with fingers pointing downward while gloving, are not as critical as keeping hands above the elbows for maintaining sterility. Choice D, putting the glove on the dominant hand first, is not as important as ensuring that gloved hands are kept above the elbows to maintain sterility.
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