HESI LPN
CAT Exam Practice Test
1. Which type of Leukocyte is involved with allergic responses and the destruction of parasitic worms?
- A. Neutrophils
- B. Lymphocytes
- C. Eosinophils
- D. Monocytes
Correct answer: C
Rationale: Eosinophils are the correct answer. Eosinophils are specialized white blood cells that play a crucial role in allergic responses and combating parasitic infections. They release substances to destroy parasites and modulate allergic reactions. Neutrophils (Choice A) are mainly involved in fighting bacterial infections. Lymphocytes (Choice B) play a key role in the immune response, including antibody production, but are not primarily responsible for combating parasites or allergic responses. Monocytes (Choice D) are involved in immune defense, differentiating into macrophages or dendritic cells, but they are not mainly associated with allergic responses or parasitic worm destruction.
2. After medicating the client for pain and collecting granules and stones from strained urine, which action is most important for the nurse to implement next?
- A. Send the calculi for laboratory analysis of stone composition.
- B. Evaluate the client for persistent pain.
- C. Assess the clarity of urine.
- D. Encourage high fluid intake to produce urine output of 2L/day.
Correct answer: A
Rationale: Sending the calculi for analysis is crucial in determining the type of stone present. Identifying the stone composition helps in developing an effective treatment plan and preventive measures to avoid future episodes of urolithiasis. This step is essential in providing targeted care for the client. Options B, C, and D are not the most important actions at this point. While evaluating for persistent pain is essential, determining the stone composition takes precedence to guide appropriate interventions.
3. When taking a health history of a client admitted with acute pancreatitis, which client complaint should be expected?
- A. A low-grade fever and left lower abdominal pain
- B. Severe headache and sweating all the time
- C. Severe mid-epigastric pain after ingesting a heavy meal
- D. Dull, continuous, right lower quadrant pain and nausea
Correct answer: C
Rationale: The correct answer is C: 'Severe mid-epigastric pain after ingesting a heavy meal.' This symptom is characteristic of acute pancreatitis due to inflammation of the pancreas, which often presents with severe pain in the mid-epigastric region that may worsen after eating. Choices A, B, and D describe symptoms that are not typically associated with acute pancreatitis. A low-grade fever and left lower abdominal pain (Choice A) may be more indicative of other conditions like diverticulitis. Severe headache and sweating (Choice B) are commonly seen in conditions like migraines or infections. Dull, continuous, right lower quadrant pain and nausea (Choice D) could be suggestive of appendicitis rather than acute pancreatitis.
4. The nurse is planning care for a family whose children did not receive childhood immunizations. After one of the children contracted mumps, the father is diagnosed with orchitis. Which intervention should be included in the father's plan of care?
- A. Use of bedrest with scrotal support
- B. Administration of antibiotics for 10 days
- C. Applying heat to promote the healing process
- D. Using an ice pack to reduce scrotal pain
Correct answer: A
Rationale: For orchitis, the recommended intervention is bedrest with scrotal support. This helps reduce swelling and discomfort in the scrotum. Antibiotics are generally not required for viral orchitis, so administering antibiotics for 10 days (Choice B) is not indicated. Applying heat (Choice C) may worsen swelling and should be avoided. Using an ice pack (Choice D) is not the preferred method for managing orchitis; it may not be as effective as providing support and rest for the scrotum.
5. When should the nurse conduct an Allen’s test?
- A. When obtaining pulmonary artery pressures
- B. To assess for the presence of a deep vein thrombus in the leg
- C. Just before arterial blood gases are drawn peripherally
- D. Prior to attempting a cardiac output calculation
Correct answer: C
Rationale: The correct time to conduct an Allen’s test is just before arterial blood gases are drawn peripherally. This test is performed to assess the adequacy of collateral circulation in the hand before obtaining arterial blood gases. Choice A is incorrect because an Allen’s test is not specifically done when obtaining pulmonary artery pressures. Choice B is incorrect because an Allen’s test is not used to assess deep vein thrombosis. Choice D is incorrect because an Allen’s test is not done specifically before attempting a cardiac output calculation.
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