HESI LPN
HESI Practice Test for Fundamentals
1. The client is advised to take dexamethasone (Decadron) with food or milk. What is the physiological basis for this advice?
- A. Inhibits pepsin production
- B. Stimulates hydrochloric acid production
- C. Delays stomach emptying time
- D. Reduces hydrochloric acid production
Correct answer: B
Rationale: The correct answer is B: Stimulates hydrochloric acid production. Dexamethasone can stimulate the production of hydrochloric acid in the stomach, which may lead to irritation of the stomach lining. Taking dexamethasone with food or milk helps to neutralize or buffer the acid, reducing the risk of stomach irritation. Choice A is incorrect because dexamethasone does not inhibit pepsin production. Choice C is incorrect as dexamethasone does not slow stomach emptying time. Choice D is incorrect as dexamethasone does not reduce hydrochloric acid production.
2. A client with a history of hypertension is prescribed a diuretic. Which of the following laboratory values should the nurse monitor to evaluate the effectiveness of the medication?
- A. Monitor serum calcium levels.
- B. Monitor serum potassium levels.
- C. Monitor serum sodium levels.
- D. Monitor serum magnesium levels.
Correct answer: B
Rationale: The correct answer is to monitor serum potassium levels. When a client is prescribed a diuretic, monitoring serum potassium levels is essential to evaluate the medication's effectiveness and to detect potential electrolyte imbalances. Diuretics can cause potassium loss, leading to hypokalemia, which can have serious consequences such as cardiac arrhythmias. Monitoring serum calcium levels (Choice A) is not typically required when assessing the effectiveness of diuretics. Similarly, monitoring serum sodium levels (Choice C) is important for other conditions but is not the primary concern when evaluating diuretic therapy. Monitoring serum magnesium levels (Choice D) is also important, but potassium levels are more critical in assessing diuretic effectiveness and preventing complications.
3. A healthcare provider is providing range of motion to the shoulder and must perform external rotation. Which action will the provider take?
- A. Moves the patient's arm in a full circle.
- B. Moves the patient's arm across the body as far as possible.
- C. Moves the patient's arm behind the body, keeping the elbow straight.
- D. Moves the patient's arm until the thumb is upward and lateral to the head with the elbow flexed.
Correct answer: D
Rationale: The correct action for external rotation of the shoulder involves moving the patient's arm until the thumb is upward and lateral to the head with the elbow flexed. This position maximizes external rotation at the shoulder joint. Choices A, moving the arm in a full circle, B, moving the arm across the body, and C, moving the arm behind the body with the elbow straight, do not describe external rotation and are incorrect. Therefore, Choice D is the correct action for performing external rotation.
4. A client who is postoperative is being taught how to use a flow-oriented incentive spirometer. Which of the following instructions should be included by the nurse?
- A. Cough deeply after each use.
- B. Take a deep breath and hold for 10 seconds.
- C. Breathe in slowly and deeply to raise the ball or piston.
- D. Exhale forcefully before using the spirometer.
Correct answer: C
Rationale: The correct technique for using a flow-oriented incentive spirometer involves breathing in slowly and deeply to raise the ball or piston. This action helps to expand the lungs and improve lung function. Option A is incorrect as coughing deeply after each use is not part of using the spirometer. Option B is incorrect as holding the breath for 10 seconds is not the correct instruction for using the spirometer. Option D is incorrect as exhaling forcefully before using the spirometer is not the appropriate step in using this device.
5. A charge nurse is assigning tasks to a nurse and assistive personnel for a group of clients. Which of the following tasks should the charge nurse delegate to the AP?
- A. Report ABG results to the provider
- B. Instruct a client about how to use an incentive spirometer
- C. Administer an enteral feeding to a client who has an established gastrostomy tube
- D. Monitor the color of a client’s urinary output
Correct answer: D
Rationale: The correct answer is D because monitoring the color of a client's urinary output is a task that can be safely delegated to assistive personnel. This task involves basic observation and does not require specialized nursing knowledge or skills. Choice A is incorrect because reporting ABG results to the provider requires interpretation and critical thinking skills typically performed by a nurse. Choice B is incorrect as instructing a client about how to use an incentive spirometer involves educating and assessing the client, which is a nursing responsibility. Choice C is incorrect as administering enteral feeding to a client with a gastrostomy tube requires nursing expertise to ensure proper technique and monitoring for complications.
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