HESI LPN
HESI PN Exit Exam
1. 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.
2. During the last 30 days, an elderly client has exhibited a progressively decreasing appetite, is spending increasing amounts of daytime hours in bed, and refuses to participate in planned daytime activities. Which action should the practical nurse take?
- A. Record the findings and report the symptoms to the charge nurse
- B. Ask the family members to visit more often to stimulate the patient
- C. Motivate the client by offering favorite foods as a prize
- D. Withhold any medications that may cause side effects
Correct answer: A
Rationale: The practical nurse should record the findings and report the symptoms to the charge nurse. These behaviors may indicate a serious underlying condition such as depression or physical illness. By reporting to the charge nurse, the client can receive appropriate assessment and intervention promptly. Choice B is incorrect as family visits may not address the root cause of the symptoms. Choice C is incorrect as it oversimplifies the situation and may not be effective in addressing the underlying issue. Choice D is incorrect because withholding medications without proper assessment and guidance can be harmful to the client's health.
3. The nurse is teaching a client with diabetes mellitus how to differentiate between hypoglycemia and ketoacidosis. What statement indicates to the nurse that the client has an understanding of this condition?
- A. Glucose should be taken if I have a fruity breath odor.
- B. Glucose should be taken if I am urinating more than usual.
- C. Glucose should be taken if I have blurred vision.
- D. Glucose should be taken if I develop shakiness.
Correct answer: D
Rationale: The correct answer is D. Shakiness is a symptom of hypoglycemia, which is low blood sugar. Taking glucose can help raise blood sugar levels quickly in this situation. Fruity breath odor and excessive urination are signs of ketoacidosis, a complication of diabetes involving high levels of ketones in the blood. Blurred vision can be a symptom of high blood sugar, but it is not specific to hypoglycemia.
4. A client who had a thyroidectomy 24 hours ago reports tingling around the mouth and in the fingertips. What should the nurse do first?
- A. Check the client’s calcium levels.
- B. Administer a dose of calcium gluconate.
- C. Assess the client's incision site for bleeding.
- D. Notify the healthcare provider.
Correct answer: A
Rationale: Tingling around the mouth and in the fingertips can indicate hypocalcemia, a potential complication after thyroidectomy due to accidental damage to the parathyroid glands. Checking calcium levels is crucial as it helps in diagnosing hypocalcemia accurately. Administering calcium without knowing the actual calcium levels can be dangerous. Assessing the incision site for bleeding is important but not the priority in this situation. Notifying the healthcare provider can be done after assessing and managing the immediate concern of hypocalcemia.
5. A female client taking a liquid iron preparation expresses concern that her tooth color has darkened since starting the medication. What action should the PN implement?
- A. Teach the client to use a straw when taking the medication to reduce further tooth staining
- B. Advise the client to withhold further doses until consulting with the healthcare provider
- C. Reassure the client that this change indicates the medication is having the desired effect
- D. Determine if the client is also experiencing mouth or gum pain and difficulty swallowing
Correct answer: A
Rationale: The correct action for the PN to implement is to teach the client to use a straw when taking the medication to reduce further tooth staining. Using a straw minimizes contact between the iron preparation and the teeth, helping prevent additional staining. Choice B is incorrect because withholding doses without consulting the healthcare provider could be detrimental to the client's health. Choice C is incorrect because darkening of tooth color is not an expected effect of liquid iron preparation and should not be reassured as a desired effect. Choice D is incorrect as it does not directly address the client's concern about tooth staining.
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