HESI RN
HESI Fundamentals
1. A client with a history of heart failure is admitted with a diagnosis of pulmonary edema. Which intervention should the nurse implement first?
- A. Administer oxygen via non-rebreather mask.
- B. Administer furosemide (Lasix) IV push.
- C. Insert a Foley catheter to monitor urine output.
- D. Position the client in a high Fowler's position.
Correct answer: A
Rationale: Administering oxygen via a non-rebreather mask is the priority intervention for a client with pulmonary edema to improve oxygenation and address respiratory distress. Adequate oxygenation is essential to support vital organ function. Administering furosemide intravenously, inserting a Foley catheter to monitor urine output, and positioning the client in a high Fowler's position are important interventions but are secondary to ensuring optimal oxygenation in this client with pulmonary edema.
2. A client is receiving levothyroxine for hypothyroidism. Which of the following findings would indicate that the medication is effective?
- A. Decreased heart rate
- B. Increased weight
- C. Increased energy levels
- D. Decreased appetite
Correct answer: C
Rationale: The correct answer is C: Increased energy levels. When a client with hypothyroidism is receiving levothyroxine, increased energy levels indicate that thyroid hormone levels are being normalized, which is a positive response to treatment. This improvement reflects the effectiveness of the medication in addressing the underlying hypothyroidism. Choices A, B, and D are incorrect. Decreased heart rate and decreased appetite may be symptoms of hypothyroidism and would not necessarily indicate the effectiveness of levothyroxine. Increased weight could also be a symptom of hypothyroidism and does not directly reflect the medication's effectiveness.
3. The nurse is conducting an admission assessment of an 11-month-old infant with CHF who is scheduled for repair of restenosis of coarction of the aorta that was repaired 4 days after birth. Findings include blood pressure higher in the arms than the lower extremities, pounding brachial pulses, and slightly palpable femoral pulses. What pathophysiologic mechanisms support these findings?
- A. The aortic semilunar valve obstructs blood flow into the systemic circulation
- B. The lumen of the aorta reduces the volume of the blood flow to the lower extremities
- C. The pulmonic valve prevents adequate blood volume into the pulmonary circulation
- D. An opening in the atrial septum causes a murmur due to a turbulent left-to-right shunt
Correct answer: B
Rationale: The correct answer is B. Coarctation of the aorta causes narrowing of the aorta, reducing blood flow to the lower extremities. This narrowing results in higher blood pressure in the arms compared to the lower extremities, along with stronger brachial pulses and slightly palpable femoral pulses. Choices A, C, and D are incorrect because they do not align with the pathophysiological mechanism of coarctation of the aorta, which specifically leads to reduced blood flow to the lower extremities.
4. A client reports dizziness when standing up quickly. What advice should the nurse give?
- A. Encourage the client to drink more fluids.
- B. Change positions slowly to prevent dizziness.
- C. Report the symptom to the healthcare provider immediately.
- D. Limit physical activity to avoid triggering dizziness.
Correct answer: B
Rationale: The correct advice for a client experiencing dizziness when standing up quickly is to change positions slowly to prevent dizziness. This symptom is suggestive of postural hypotension, where a sudden change in position can lead to a drop in blood pressure, causing dizziness. Encouraging the client to drink more fluids (Choice A) may be beneficial for other conditions but is not directly related to the prevention of dizziness in this case. Reporting the symptom to the healthcare provider immediately (Choice C) is important if the dizziness is persistent or severe, but the immediate action to prevent it is to change positions slowly. Limiting physical activity (Choice D) may not necessarily address the underlying cause of dizziness in this context.
5. Nurse Wayne is aware that a positive Chvostek's sign indicates:
- A. Hypocalcemia
- B. Hyponatremia
- C. Hypokalemia
- D. Hypermagnesemia
Correct answer: A
Rationale: A positive Chvostek's sign indicates hypocalcemia. This sign is elicited by tapping the facial nerve anterior to the ear, resulting in facial muscle twitching due to increased neuromuscular irritability from low calcium levels. Hyponatremia (Choice B) is characterized by low sodium levels, but it does not present with Chvostek's sign. Hypokalemia (Choice C) is low potassium levels, and hypermagnesemia (Choice D) is high magnesium levels, neither of which are associated with Chvostek's sign.