HESI LPN
Medical Surgical HESI
1. The nurse instructs the mother of a child with a ventricular septal defect that she can expect the child to become cyanotic when the child does what?
- A. Experiences an elevation in temperature.
- B. Sleeps on the left side.
- C. Cries vigorously.
- D. Eats.
Correct answer: C
Rationale: The correct answer is C: Cries vigorously. When the child cries vigorously, it increases the pressure in the right ventricle, allowing unoxygenated blood to enter the circulating volume, leading to cyanosis. This occurs due to the shunting of blood from the right side of the heart to the left side through the ventricular septal defect. Choices A, B, and D are incorrect because they do not directly impact the pressure in the right ventricle, which is crucial in causing cyanosis in this scenario.
2. Based on this strip, what is the interpretation of this rhythm?
- A. Atrial fibrillation.
- B. Ventricular tachycardia.
- C. Normal sinus rhythm.
- D. Second-degree heart block.
Correct answer: C
Rationale: The correct answer is C, Normal sinus rhythm. Normal sinus rhythm is characterized by a regular rhythm, normal P waves, and a consistent PR interval. In this context, the strip likely shows a normal ECG pattern with these characteristics, indicating a healthy heart rhythm. Choices A, B, and D are incorrect. Atrial fibrillation would show an irregularly irregular rhythm with no discernible P waves. Ventricular tachycardia would display wide QRS complexes and a fast heart rate. Second-degree heart block would exhibit intermittent dropped QRS complexes.
3. Which statement correctly explains the etiology of Down syndrome?
- A. There is an extra chromosome on the 21st pair.
- B. There is a missing chromosome on the 21st pair.
- C. There are two pairs of the 21st chromosome.
- D. The 21st chromosome pair is missing.
Correct answer: A
Rationale: The correct answer is A: 'There is an extra chromosome on the 21st pair.' Down syndrome is caused by the presence of an extra copy of chromosome 21, known as trisomy 21. This additional genetic material leads to the characteristics associated with Down syndrome. Choices B, C, and D are incorrect because Down syndrome is not due to a missing chromosome or having two pairs of the 21st chromosome; it results from the presence of an extra chromosome on the 21st pair.
4. A client who had a radical neck dissection returns to the surgical unit with 2 JP drains in the right side of the incision. One JP tube is open and has minimal drainage. Which action should the nurse take to increase drainage into the JP?
- A. Reinforce the incisional dressings and assess behind the neck for drainage.
- B. Place the client in a right lateral side-lying position and elevate the head of the bed.
- C. Irrigate the JP tubing with 1 ml NSS, then close the opening with its tab.
- D. Compress the bulb with the tab open and then reinsert the tab into its opening.
Correct answer: D
Rationale: Compressing the bulb with the tab open creates suction, which helps increase drainage into the JP drain. This action can aid in removing accumulated fluids from the surgical site. Reinforcing the incisional dressings and assessing behind the neck for drainage (Choice A) is not directly related to increasing drainage into the JP. Placing the client in a right lateral side-lying position and elevating the head of the bed (Choice B) may not directly impact drainage into the JP drain. Irrigating the JP tubing with 1 ml NSS and then closing the opening with its tab (Choice C) is unnecessary and could introduce contaminants into the drain.
5. A client with chronic heart failure is experiencing dyspnea and has an oxygen saturation of 88%. Which position is most appropriate to improve oxygenation?
- A. Supine with legs elevated
- B. High Fowler's position
- C. Prone with pillows under the chest
- D. Side-lying with head flat
Correct answer: B
Rationale: The correct answer is B: High Fowler's position. High Fowler's position is the most appropriate for a client with chronic heart failure experiencing dyspnea and low oxygen saturation. This position helps improve lung expansion and oxygenation by maximizing chest expansion and allowing better ventilation. Choice A, supine with legs elevated, may worsen dyspnea by reducing lung expansion. Choice C, prone with pillows under the chest, is not suitable for a client experiencing dyspnea as it may further compromise breathing. Choice D, side-lying with head flat, does not facilitate optimal lung expansion and is not the best choice for improving oxygenation in this scenario.
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