HESI RN
HESI Medical Surgical Assignment Exam
1. A healthcare professional reviews the blood gas results of a client in respiratory distress. The pH is 7.32, and the PCO2 is 50 mm Hg. Which of the following acid-base imbalances does the professional recognize in these findings?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Respiratory acidosis
- D. Respiratory alkalosis
Correct answer: C
Rationale: In respiratory acidosis, the pH is low (<7.35) and the PCO2 is increased (>45 mm Hg). These findings indicate that the client is experiencing respiratory acidosis, a condition where there is an excess of carbon dioxide in the blood due to inadequate ventilation, commonly seen in respiratory distress. Metabolic acidosis (Choice A) is characterized by a low pH and decreased bicarbonate levels, which is not the case in this scenario. Metabolic alkalosis (Choice B) is associated with a high pH and increased bicarbonate levels. Respiratory alkalosis (Choice D) is marked by a high pH and decreased PCO2, opposite to the values presented in the blood gas results of this client.
2. A 6-year-old child with a history of asthma is brought to the clinic with complaints of wheezing and shortness of breath. The nurse notes that the child is using accessory muscles to breathe. What should the nurse do first?
- A. Administer a bronchodilator
- B. Obtain a peak flow reading
- C. Apply oxygen
- D. Perform a complete respiratory assessment
Correct answer: A
Rationale: Administering a bronchodilator is the initial priority as it helps open the child's airways, reducing the wheezing and shortness of breath. This intervention aims to provide immediate relief and improve the child's respiratory distress. Obtaining a peak flow reading or applying oxygen may be necessary after administering the bronchodilator, but the priority is to address the acute symptoms of wheezing and shortness of breath first. Performing a complete respiratory assessment can be done after the immediate intervention of administering the bronchodilator to further evaluate the child's respiratory status.
3. The client is receiving discharge teaching for heart failure. Which statement made by the client indicates a need for further teaching?
- A. I will weigh myself daily and report any significant weight gain to my healthcare provider.
- B. I will limit my sodium intake to help manage my heart failure.
- C. I will take my medications as prescribed by my healthcare provider.
- D. I will stop taking my medications if I feel better.
Correct answer: D
Rationale: Choice D is the correct answer because stopping medications when feeling better can be harmful in heart failure. It is essential to complete the full course of medication as prescribed by the healthcare provider to effectively manage heart failure. Choices A, B, and C demonstrate good understanding and compliance with heart failure management strategies, such as monitoring weight, restricting sodium intake, and adhering to prescribed medications, respectively.
4. Following a lumbar puncture, a client voices several complaints. What complaint indicates to the nurse that the client is experiencing a complication?
- A. I am having pain in my lower back when I move my legs
- B. My throat hurts when I swallow
- C. I feel sick to my stomach and am going to throw up
- D. I have a headache that gets worse when I sit up
Correct answer: D
Rationale: The correct answer is D. A post-lumbar puncture headache, ranging from mild to severe, may occur as a result of leakage of cerebrospinal fluid at the puncture site. This complication is usually managed by bed rest, analgesics, and hydration. Choices A, B, and C do not directly indicate complications associated with a lumbar puncture. Pain in the lower back when moving legs, a sore throat when swallowing, and nausea with a feeling of vomiting are not typical complications of lumbar puncture.
5. What is the difference between DNA and RNA?
- A. RNA has an extra Phosphate group
- B. DNA has one less oxygen than RNA
- C. RNA has one less oxygen than DNA
- D. DNA has an extra sugar molecule
Correct answer: B
Rationale: The correct answer is B. DNA has one less oxygen atom in its sugar molecule (deoxyribose) compared to RNA, which has a ribose sugar. Choice A is incorrect because RNA does not have an extra phosphate group. Choice C is incorrect as RNA actually has one more oxygen atom than DNA. Choice D is incorrect as DNA and RNA have different sugar molecules, with DNA having deoxyribose and RNA having ribose.