while changing a clients chest tube dressing the nurse notes a crackling sensation when gentle pressure is applied to the skin at the insertion site w
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Nursing Elites

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?

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. 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?

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.

3. What intervention should the nurse implement during the administration of a vesicant chemotherapeutic agent via an IV site in the client's arm?

Correct answer: A

Rationale: The correct intervention the nurse should implement during the administration of a vesicant chemotherapeutic agent via an IV site in the client's arm is to assess the IV site frequently for signs of extravasation. Vesicants are agents that can cause tissue damage if they leak into the surrounding tissues. Monitoring for signs of extravasation such as swelling, pain, or redness is crucial to prevent tissue damage and ensure prompt intervention if extravasation occurs. Choices B, C, and D are incorrect because monitoring capillary refill, applying a topical anesthetic for burning, and explaining temporary burning do not directly address the risk of extravasation associated with vesicant chemotherapeutic agents.

4. A client with myasthenia gravis (MG) is receiving immunosuppressive therapy. Review of recent laboratory test results shows that the client’s serum magnesium level has decreased below the normal range. In addition to contacting the healthcare provider, what nursing action is most important?

Correct answer: D

Rationale: The correct answer is to observe the rhythm on the telemetry monitor. Decreased magnesium levels can lead to cardiac issues, such as arrhythmias. Monitoring the heart rhythm is crucial in this situation. Checking visual difficulties (choice A) is not directly related to the potential cardiac effects of low magnesium levels. Noting the hemoglobin level (choice B) and assessing for hand and joint pain (choice C) are not the priority when dealing with low magnesium levels and possible cardiac complications.

5. When assessing a client's blood pressure and determining an auscultatory gap, which action should the nurse implement?

Correct answer: A

Rationale: When an auscultatory gap is present, comparing the palpated systolic blood pressure with the auscultated pressure is crucial. This helps to accurately measure blood pressure and detect any discrepancies caused by the gap. Assessing for lightheadedness upon standing (choice B) is unrelated to addressing an auscultatory gap. Checking the consistency between automated and manual blood pressure readings (choice C) is important for validation but not specifically for managing an auscultatory gap. Observing blood pressure changes between lying and sitting positions (choice D) is relevant for orthostatic hypotension assessment but not for dealing with an auscultatory gap.

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