HESI LPN
HESI Fundamentals Exam
1. A client requires gastric decompression, and a nurse is inserting an NG tube. Which action should the nurse take to verify proper placement of the tube?
- A. Assess the client for a gag reflex
- B. Measure the pH of the gastric aspirate
- C. Place the end of the NG tube in water to observe for bubbling
- D. Auscultate 2.5 cm (1 in) above the umbilicus while injecting 15 mL of sterile water
Correct answer: B
Rationale: Measuring the pH of the gastric aspirate is the most reliable method to confirm proper placement of an NG tube. Gastric fluid has an acidic pH, typically ranging from 1 to 5. Assessing the client for a gag reflex (choice A) is important for airway protection but does not confirm tube placement. Placing the NG tube in water to observe for bubbling (choice C) is incorrect and not a reliable method for verifying placement. Auscultating 2.5 cm above the umbilicus while injecting sterile water (choice D) is an outdated method and is not recommended for verifying NG tube placement.
2. A nurse in a provider's office is preparing to assess a young adult client's musculoskeletal system as part of a comprehensive physical examination. Which of the following findings should the nurse expect?
- A. Concave thoracic spine posteriorly
- B. Exaggerated lumbar curvature
- C. Concave lumbar spine posteriorly
- D. Exaggerated thoracic curvature
Correct answer: B
Rationale: When assessing a young adult's musculoskeletal system, the nurse should expect an exaggerated lumbar curvature (lordosis). This is a normal finding in young adults due to the natural curvature of the spine. Concave thoracic spine posteriorly (choice A) and concave lumbar spine posteriorly (choice C) are not typical findings as the spine should have normal curvatures. Exaggerated thoracic curvature (choice D) is also not a typical finding in young adults.
3. A client with chronic kidney disease is being assessed. Which of the following laboratory values would be most concerning?
- A. Serum creatinine of 3.0 mg/dL
- B. Serum potassium of 6.5 mEq/L
- C. Blood urea nitrogen (BUN) of 45 mg/dL
- D. Hemoglobin of 10 g/dL
Correct answer: B
Rationale: In a client with chronic kidney disease, elevated serum potassium levels (hyperkalemia) are the most concerning finding. Hyperkalemia can lead to life-threatening cardiac dysrhythmias. Monitoring and managing serum potassium levels are crucial in patients with kidney disease to prevent severe complications. While elevated creatinine (Choice A) and BUN (Choice C) are indicative of impaired kidney function, hyperkalemia poses a more immediate threat to the client's health. Hemoglobin levels (Choice D) can be affected by chronic kidney disease but are not as acutely dangerous as severe hyperkalemia.
4. A client has a new cast on the left arm, and the nurse is assessing the client. Which of the following findings should the nurse report to the provider immediately?
- A. Increased warmth in the affected arm
- B. Itching under the cast
- C. Pain with passive movement
- D. Drainage on the cast
Correct answer: C
Rationale: The correct answer is C: Pain with passive movement. Pain with passive movement in a client with a new cast can indicate compartment syndrome, a serious condition where pressure builds up within the muscles, nerves, and blood vessels of the affected limb, potentially leading to tissue damage. Immediate reporting is crucial to prevent further complications. Increased warmth in the affected arm could be a normal inflammatory response to the injury and casting process. Itching under the cast is common and can be managed without immediate concern. Drainage on the cast may be expected initially after casting due to residual moisture from the setting process, but ongoing or excessive drainage should be monitored and reported if persistent.
5. A nurse reviews an immobilized patient's laboratory results and discovers hypercalcemia. Which condition will the nurse monitor for most closely in this patient?
- A. Hypostatic pneumonia
- B. Renal stones
- C. Pressure ulcers
- D. Thrombus formation
Correct answer: B
Rationale: The correct answer is B: Renal stones. Renal calculi are calcium stones that can form in the renal pelvis or pass through the ureters. Immobilized patients, who have hypercalcemia, are at increased risk for developing renal stones. Monitoring for signs and symptoms of renal stones is crucial in this patient population. Choices A, C, and D are incorrect because although they are potential complications in immobilized patients, they are not directly associated with hypercalcemia and do not match the scenario described in the question.
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