HESI LPN
CAT Exam Practice Test
1. 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.
2. Where should the nurse choose as the best location to begin a screening program for hypothyroidism?
- A. A business and professional women's group.
- B. An African-American senior citizens center.
- C. A daycare center in a Hispanic neighborhood.
- D. An after-school center for Native-American teens.
Correct answer: B
Rationale: The best location for beginning a screening program for hypothyroidism would be an African-American senior citizens center. This choice is the most suitable as hypothyroidism is more prevalent among older adults, and African-American seniors are at a higher risk for this condition due to various factors like genetics and lifestyle. Choices A, C, and D are less appropriate because hypothyroidism is not specifically linked to business and professional women, Hispanic children, or Native-American teens. Targeting the high-risk group, which in this case, are African-American seniors, increases the chances of successful screening and early detection.
3. A female client on the mental health unit tells the nurse that her roommate is sitting on the bathroom floor with superficial cuts on her wrists. The nurse cleans and assesses the client’s wrists and asks what happened. She doesn’t respond. What should the nurse do next?
- A. Find supplies to put a dressing on the client’s wrists
- B. Take the client to a room for supervision by staff
- C. Call the healthcare provider to report the client’s behavior
- D. Go find a staff member to stay in the room with the client
Correct answer: B
Rationale: In this situation, the nurse's priority is to ensure the safety and supervision of the client. Moving the client to a room for direct supervision by staff is crucial to prevent further harm and provide immediate support. While cleaning and assessing the client's wrists are important, ensuring ongoing supervision is vital in this scenario. Calling the healthcare provider to report the behavior may be necessary but is not the immediate action required. Finding supplies to dress the client's wrists is important but not as urgent as ensuring constant supervision by staff.
4. An adult client with a broken femur is transferred to the medical-surgical unit to await surgical internal fixation after the application of an external traction device to stabilize the leg. An hour after an opioid analgesic was administered, the client reports muscle spasms and pain at the fracture site. While waiting for the client to be transported to surgery, which action should the nurse implement?
- A. Observe for signs of deep vein thrombosis.
- B. Administer a PRN dose of a muscle relaxant.
- C. Check the client’s most recent electrolyte values.
- D. Reduce the weight on the traction device.
Correct answer: B
Rationale: The correct answer is B: Administer a PRN dose of a muscle relaxant. Muscle spasms and pain might be relieved by muscle relaxants, which are appropriate before surgery. Choice A is incorrect because the client is experiencing muscle spasms, not signs of deep vein thrombosis. Choice C is not the most immediate action needed in this situation. Choice D is incorrect because reducing the weight on the traction device would not directly address the muscle spasms and pain reported by the client.
5. The nurse is preparing to administer an IM injection to a 6-month-old child. Which injection site is best for the nurse to use?
- A. Vastus lateralis
- B. Deltoid
- C. Ventrogluteal
- D. Dorsogluteal
Correct answer: A
Rationale: The vastus lateralis is the preferred site for IM injections in infants due to their limited muscle mass and safety. Infants do not have well-developed muscle mass, making the vastus lateralis the best option for IM injections. The deltoid muscle is typically used for older children and adults. Ventrogluteal and dorsogluteal sites are not recommended for infants due to safety concerns, including the risk of damaging the sciatic nerve. Therefore, the correct choice is the vastus lateralis for IM injections in infants.
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