HESI LPN
HESI Test Bank Medical Surgical Nursing
1. A client who had surgery yesterday is becoming increasingly anxious. The client’s respiratory rate has increased to 38 breaths/minute. The client has a nasogastric tube to low intermittent suction with 500 ml of yellow-green drainage over the last four hours. The client's arterial blood gases (ABGs) indicate a decreased CO2 and an increased serum pH. Which serum laboratory value should the nurse monitor first?
- A. Electrolytes.
- B. Creatinine.
- C. Blood urea nitrogen.
- D. Glucose.
Correct answer: A
Rationale: The correct answer is A, Electrolytes. In this scenario, the client is at risk for metabolic alkalosis due to the loss of gastric secretions through the nasogastric tube. Monitoring electrolytes is crucial to assess the levels of sodium, potassium, chloride, and bicarbonate, which are important in maintaining the acid-base balance of the body. Changes in these electrolyte levels can provide valuable information about the client's fluid status and acid-base balance. Creatinine, blood urea nitrogen, and glucose levels are important parameters to monitor in different situations but are not the priority in this case of potential metabolic alkalosis.
2. The healthcare provider is assessing a client with a chest tube. Which finding indicates that the chest tube is functioning properly?
- A. Continuous bubbling in the water seal chamber
- B. Tidaling in the water seal chamber
- C. Absence of drainage in the collection chamber
- D. Fluid level in the suction control chamber is below the prescribed level
Correct answer: B
Rationale: Tidaling in the water seal chamber indicates proper chest tube function. Tidaling refers to the rise and fall of fluid in the water seal with inhalation and exhalation, demonstrating the patency of the system. Continuous bubbling (Choice A) in the water seal chamber indicates an air leak. Absence of drainage in the collection chamber (Choice C) is not a desired finding as it suggests no drainage is occurring. A fluid level below the prescribed level in the suction control chamber (Choice D) may indicate inadequate suction.
3. The healthcare provider writes several prescriptions for a client diagnosed with hospital-acquired pneumonia (HAP) that include a combination of broad-spectrum antibiotics. Which intervention should the nurse implement first?
- A. Administer the first dose of antibiotics.
- B. Obtain a chest X-ray.
- C. Administer oxygen therapy.
- D. Collect blood specimens for culture prior to starting antibiotic therapy.
Correct answer: D
Rationale: Collecting blood specimens for culture prior to starting antibiotic therapy is the priority intervention in a client diagnosed with hospital-acquired pneumonia. This step is crucial to identify the causative organism responsible for the infection and ensure that the antibiotics prescribed are appropriate for effective treatment. Administering antibiotics before collecting cultures may interfere with the accuracy of culture results, potentially leading to inappropriate treatment. While administering the first dose of antibiotics is important, obtaining a chest X-ray and administering oxygen therapy are secondary interventions compared to identifying the causative organism through blood cultures.
4. How are type IV hypersensitivity reactions different from all other types (I, II, or III) of hypersensitivity reactions?
- A. They involve antigen-antibody complexes.
- B. They are mediated by T cells and do not involve antibodies.
- C. They result in immediate allergic reactions.
- D. They are the least severe form of hypersensitivity.
Correct answer: B
Rationale: Type IV hypersensitivity reactions are mediated by T cells and cytokine release, leading to delayed reactions, unlike types I, II, and III, which involve antibodies. Choice A is incorrect because type IV reactions do not involve antigen-antibody complexes. Choice C is incorrect as type IV reactions do not result in immediate allergic reactions. Choice D is incorrect as type IV reactions are not the least severe form of hypersensitivity; in fact, they are known to cause significant tissue damage and inflammation.
5. The nurse empties the nasogastric suction collection canister of a client who had a bowel resection the previous day and notes that 1,000 mL of gastric secretions were collected in the last 4 hours. The nurse should assess the client for symptoms of which related problem?
- A. Respiratory acidosis.
- B. Metabolic alkalosis.
- C. Hypoglycemia.
- D. Hyperkalemia.
Correct answer: B
Rationale: The correct answer is B: Metabolic alkalosis. Loss of gastric secretions can lead to metabolic alkalosis due to the loss of hydrochloric acid. This can result in an increase in blood pH levels. Respiratory acidosis (choice A) is caused by retention of carbon dioxide, not related to the loss of gastric secretions. Hypoglycemia (choice C) is a low blood sugar level and is not directly related to the loss of gastric secretions. Hyperkalemia (choice D) is an elevated potassium level in the blood and is not typically associated with the loss of gastric secretions.
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