which of the following isoenzymes is elevated in a client who has had a myocardial infarction
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Nursing Elites

NCLEX-PN

Nclex Questions Management of Care

1. Which of the following isoenzymes is elevated in a client who has had a myocardial infarction?

Correct answer: C

Rationale: CPK-MB is the correct answer as it is elevated in clients who have had a myocardial infarction. CPK-BB is elevated in clients with brain damage, and CPK-MM is elevated in clients with skeletal muscle damage. CPK-MI, mentioned in the rationale, does not exist, making it an incorrect choice.

2. A nurse discovers that another nurse has administered an enema to a client even though the client told the nurse that he did not want one. Which is the most appropriate action for the nurse to take?

Correct answer: A

Rationale: Battery is any intentional touching of a client without the client's consent, which violates the client's rights. If a nurse discovers such an incident, they should report it to the nursing supervisor. Confronting the nurse and threatening charges of battery could lead to unnecessary conflict. Telling the client that the nurse did the right thing is incorrect as it goes against the client's wishes. While the health care provider may need to be notified eventually, the first step should be reporting the incident to the nursing supervisor to address the violation appropriately.

3. A client turns her ankle. She is diagnosed as having a Pulled Ligament. This should be documented as a:

Correct answer: B

Rationale: A sprain is the correct term for the excessive stretching of a ligament, which is what happens when a ligament is pulled. A strain involves muscle tissue. Subluxation refers to a partial dislocation, and dislocation is a complete displacement of bones in a joint. In this case, since it's a pulled ligament, the most appropriate term is a sprain.

4. When a client needs oxygen therapy, what is the highest flow rate that oxygen can be delivered via nasal cannula?

Correct answer: C

Rationale: The correct answer is 6 liters/minute. When a client requires oxygen therapy, the maximum flow rate that oxygen can be delivered via nasal cannula is 6 liters/minute. Nasal cannula can effectively deliver oxygen up to 6 liters/minute. Flow rates exceeding 6 liters/minute may lead to drying of the nasal passages and discomfort for the client. Higher flow rates, like 8 liters/minute, should be administered using a mask to ensure sufficient oxygenation. Options A, B, and D are incorrect as they indicate flow rates that surpass the recommended maximum for nasal cannula delivery.

5. When are standard walkers typically used?

Correct answer: C

Rationale: Standard walkers are typically used for clients who have poor balance, cardiac problems, or those who cannot use crutches or a cane. The rationale is correct in stating that a walker is suitable for individuals needing to bear partial weight and having strength in their wrists and arms to propel the walker forward. Choices A, B, and D are incorrect because they do not accurately reflect the main reasons why standard walkers are used in clinical practice. Using a walker is not solely about having weak arms, good hand strength, a broken leg, experienced amputation, or an autoimmune disease. The primary focus is on addressing balance issues, cardiac problems, or the inability to use crutches or a cane effectively.

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