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. A child with glomerulonephritis is admitted in the acute edematous phase. Based on this diagnosis, which nursing intervention should the PN plan to include in the child's plan of care?
- A. Recommend parents bring favorite snacks
- B. Encourage ambulation daily to the playroom
- C. Measure blood pressure every 4 to 6 hours
- D. Offer a selection of fresh fruit for each meal
Correct answer: C
Rationale: The correct answer is to measure blood pressure every 4 to 6 hours. In glomerulonephritis, monitoring blood pressure is crucial as hypertension is a common complication. This helps in assessing the child's condition and response to treatment. Choice A, recommending parents bring favorite snacks, is not related to managing glomerulonephritis. Choice B, encouraging ambulation daily to the playroom, may not be appropriate during the acute edematous phase when the child may be experiencing fluid overload. Choice D, offering a selection of fresh fruit for each meal, is not directly relevant to managing the complications of glomerulonephritis.
3. A client who had an abdominal hysterectomy is experiencing minimal urine output despite adequate fluid intake. What should the nurse assess first?
- A. The client's bladder for distension.
- B. The IV catheter insertion site.
- C. The patency of the urinary catheter.
- D. The client's vital signs.
Correct answer: C
Rationale: Assessing the patency of the urinary catheter is crucial in this situation. A blocked catheter could be a common cause of decreased urine output following surgery. While checking the IV catheter insertion site (Choice B) is important, it is not the priority in this case. Examining the client's bladder for distension (Choice A) is relevant, but assessing the patency of the catheter takes precedence in resolving the issue of decreased urine output. Monitoring vital signs (Choice D) is a routine nursing task but not the priority when dealing with decreased urine output post-surgery.
4. During a routine prenatal visit at the antepartal clinic, a multipara at 35-weeks gestation presents with 2+ edema of the ankles and feet. Which additional information should the PN report to the RN?
- A. Due date
- B. Blood pressure
- C. Gravida and parity
- D. Fundal height
Correct answer: B
Rationale: Blood pressure is the most critical information to report to the RN in this scenario. The presence of edema, along with high blood pressure, can be indicative of preeclampsia, a severe condition in pregnancy. Monitoring blood pressure is essential for assessing the patient's condition and taking appropriate actions if necessary. Choices A, C, and D are not as urgent in this situation. The due date, gravida, and parity are important for overall assessment but do not address the immediate concern of potential preeclampsia. Fundal height is used to assess fetal growth and position but is not the priority when edema and high blood pressure are present.
5. What is the primary purpose of performing range-of-motion (ROM) exercises?
- A. To improve cardiovascular fitness
- B. To prevent muscle atrophy and joint contractures
- C. To increase respiratory function
- D. To enhance cognitive function
Correct answer: B
Rationale: The primary purpose of performing range-of-motion (ROM) exercises is to prevent muscle atrophy and joint contractures. These exercises are crucial in maintaining joint mobility and muscle flexibility, especially in patients who are immobilized or have limited mobility. Improving cardiovascular fitness (Choice A) involves different types of exercises that target the heart and blood vessels, not specifically ROM exercises. Increasing respiratory function (Choice C) is typically achieved through breathing exercises and activities that enhance lung capacity. Enhancing cognitive function (Choice D) is usually addressed through cognitive exercises and activities that stimulate brain function.
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