HESI LPN
CAT Exam Practice Test
1. While changing a client’s chest tube dressing, the nurse notes a crackling sensation when gentle pressure is applied to the skin at the insertion site. What is the best action for the nurse to take?
- A. Apply a pressure dressing around the chest tube insertion site
- B. Assess the client for allergies to topical cleaning agents
- C. Measure the area of swelling and crackling
- D. Administer an oral antihistamine per PRN protocol
Correct answer: A
Rationale: A crackling sensation indicates subcutaneous emphysema, caused by air trapped under the skin. Applying a pressure dressing around the chest tube insertion site can help manage the issue by preventing further air leakage into the tissues. Choice B is incorrect because the crackling sensation is not related to allergies. Choice C is incorrect as measuring the area does not address the underlying cause. Choice D is incorrect as administering an oral antihistamine is not indicated for subcutaneous emphysema.
2. When caring for a client with acute respiratory distress syndrome (ARDS), why does the nurse elevate the head of the bed 30 degrees?
- A. To reduce abdominal pressure on the diaphragm
- B. To promote retraction of the intercostal accessory muscles of respiration
- C. To promote bronchodilation and effective airway clearance
- D. To decrease pressure on the medullary center which stimulates breathing
Correct answer: A
Rationale: Elevating the head of the bed to 30 degrees is done to reduce abdominal pressure on the diaphragm, aiding in lung expansion and oxygenation. This position helps improve respiratory mechanics by allowing the diaphragm to move more effectively. Choice B is incorrect as elevating the head of the bed does not directly promote retraction of the intercostal accessory muscles of respiration. Choice C is incorrect because although elevating the head of the bed can assist with airway clearance, its primary purpose in ARDS is to decrease pressure on the diaphragm. Choice D is incorrect because reducing pressure on the medullary center is not the main goal of elevating the head of the bed; the focus is on enhancing lung function and oxygen exchange.
3. Which laboratory finding should the nurse expect to see in a child with acute rheumatic fever?
- A. Thrombocytopenia
- B. Polycythemia
- C. Decreased ESR
- D. Positive ASO titer
Correct answer: D
Rationale: The correct answer is D: Positive ASO titer. A positive ASO titer indicates recent streptococcal infection, which is associated with acute rheumatic fever. Thrombocytopenia (choice A) is not a typical laboratory finding in acute rheumatic fever. Polycythemia (choice B) refers to an increased red blood cell count, which is not typically seen in acute rheumatic fever. Decreased ESR (choice C) is not a common laboratory finding in acute rheumatic fever; in fact, ESR is often elevated in inflammatory conditions like rheumatic fever.
4. The nurse is preparing to administer an oral antibiotic to a client with unilateral weakness, ptosis, mouth drooping, and aspiration pneumonia. What is the priority nursing assessment that should be done before administering this medication?
- A. Ask the client about soft food preferences
- B. Auscultate the client’s breath sounds
- C. Obtain and record the client’s vital signs
- D. Determine which side of the body is weak
Correct answer: B
Rationale: The correct answer is to auscultate the client’s breath sounds. Assessing breath sounds is crucial in this scenario as it helps ensure that the client can safely swallow the oral antibiotic without aspirating. Unilateral weakness, ptosis, mouth drooping, and aspiration pneumonia indicate potential swallowing difficulties, making it essential to assess breath sounds for any signs of respiratory issues. Asking about food preferences (choice A) may be relevant later but is not the priority before administering the medication. While obtaining vital signs (choice C) is important, assessing breath sounds takes precedence in this case. Determining which side of the body is weak (choice D) is not the priority assessment before administering the oral antibiotic.
5. After administering a proton pump inhibitor (PPI), which action should the nurse take to evaluate the effectiveness of the medication?
- A. Ask the client about gastrointestinal pain
- B. Measure the client’s fluid intake and output
- C. Monitor the client’s serum electrolyte levels
- D. Auscultate for bowel sounds in all quadrants
Correct answer: A
Rationale: The correct answer is A: Ask the client about gastrointestinal pain. The effectiveness of a proton pump inhibitor (PPI) is best evaluated by assessing the relief of gastrointestinal symptoms, such as heartburn, acid reflux, or stomach pain. These medications work by reducing the production of stomach acid, so improvement in these symptoms indicates the effectiveness of the PPI. Choices B, C, and D are incorrect because they do not directly reflect the effectiveness of a PPI. Measuring fluid intake and output, monitoring serum electrolyte levels, and auscultating for bowel sounds are important for assessing hydration status, electrolyte balance, and gastrointestinal motility, respectively. However, they are not specific to evaluating PPI effectiveness.
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