HESI LPN
HESI PN Exit Exam
1. What intervention should the PN implement when taking the rectal temperature of an adult client?
- A. Lubricate the tip of the thermometer with a water-based gel.
- B. Gently insert the thermometer 1 inch into the rectum.
- C. Hold the thermometer in place the entire time while taking the temperature.
- D. Place the client in the left lateral position.
Correct answer: C
Rationale: When taking a rectal temperature, it is essential to hold the thermometer in place the entire time to ensure safety, accuracy, and prevent the thermometer from slipping out. Choice A, lubricating the tip of the thermometer with a water-based gel, is important for comfort and ease of insertion. Choice B, gently inserting the thermometer 1 inch into the rectum, is more accurate for adults than inserting it 3 inches. Choice D, placing the client in the left lateral position, is not necessary for a rectal temperature measurement.
2. What is the primary function of surfactant in the lungs?
- A. Reduce surface tension
- B. Enhance oxygen absorption
- C. Facilitate carbon dioxide release
- D. Increase lung volume
Correct answer: A
Rationale: The primary function of surfactant in the lungs is to reduce surface tension in the alveoli. This reduction in surface tension prevents lung collapse and allows for easier breathing. It is particularly crucial in premature infants to help with lung expansion. Choice B is incorrect because surfactant primarily affects surface tension, not oxygen absorption. Choice C is incorrect because surfactant's main role is not in facilitating carbon dioxide release. Choice D is incorrect because surfactant does not directly increase lung volume; its main role is in reducing surface tension.
3. A homeless male client with a history of alcohol abuse had a CVA 10 years ago that resulted in left hemiparesis. Today he is brought to the clinic reporting pain in his left leg. He is afebrile, has 4+ pitting edema in the lower left leg, and has minimal swelling of the right leg. Which action should the PN implement first?
- A. Obtain a blood alcohol test
- B. Inspect legs for infection or trauma
- C. Complete a mental status exam
- D. Inquire about dietary salt intake
Correct answer: B
Rationale: Inspecting the legs for infection or trauma is the priority to assess the cause of the pain and edema, which could indicate deep vein thrombosis or cellulitis. Checking for signs of infection or trauma is crucial in this scenario to rule out potentially serious conditions. Obtaining a blood alcohol test, completing a mental status exam, or inquiring about dietary salt intake can be considered after addressing the immediate concern of identifying any infection or trauma in the leg.
4. A client is post-operative day one following an open cholecystectomy. The nurse notices the client's drainage from the T-tube is dark green. What is the most appropriate action for the nurse to take?
- A. Document the finding as normal.
- B. Notify the healthcare provider immediately.
- C. Decrease the suction on the T-tube.
- D. Flush the T-tube with saline to ensure patency.
Correct answer: A
Rationale: Dark green drainage from a T-tube after a cholecystectomy is bile, which is an expected finding. Bile is normally dark green in color. It is important for the nurse to recognize this as a normal post-operative occurrence and document the finding. There is no need to notify the healthcare provider immediately as this finding is an anticipated part of the client's recovery. Decreasing the suction on the T-tube or flushing it with saline is unnecessary and may not be indicated based on the color of the drainage. Therefore, the most appropriate action for the nurse to take is to document the dark green drainage as a normal finding.
5. What is the function of the enzyme lactase in the digestive system?
- A. Breaks down lactose into glucose and galactose
- B. Breaks down proteins into amino acids
- C. Converts starch into maltose
- D. Breaks down fats into fatty acids
Correct answer: A
Rationale: The correct answer is A: 'Breaks down lactose into glucose and galactose.' Lactase is an enzyme in the small intestine that specifically breaks down lactose, the sugar found in milk, into glucose and galactose for absorption. Choice B is incorrect because proteins are broken down into amino acids by protease enzymes. Choice C is incorrect because the enzyme amylase converts starch into maltose. Choice D is incorrect as lipase enzymes break down fats into fatty acids.
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