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

NCLEX-PN

Nclex Questions Management of Care

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

A. CPK-BB
B. CPK-MM
C. CPK-MB
D. CPK-MI

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. The nurse is teaching a client about erythema infectiosum. Which of the following factors is not correct?

A. There is no rash.
B. The disorder is uncommon in adults.
C. There is no fever.
D. There is sometimes a 'slapped face' appearance.

Correct answer: B

Rationale: The correct answer is that the disorder is uncommon in adults. Erythema infectiosum, also known as Fifth's disease, commonly affects children and is characterized by a 'slapped face' appearance. It is associated with a rash and sometimes a low-grade fever. Therefore, the statement 'The disorder is uncommon in adults' is not correct, making it the correct answer. The other statements about the presence of a rash, 'slapped face' appearance, and the possibility of a fever are accurate in the context of erythema infectiosum.

3. What is the 24-hour day-night cycle known as?

A. circadian rhythm
B. infradian rhythm
C. ultradian rhythm
D. non-REM rhythm

Correct answer: A

Rationale: The correct answer is circadian rhythm. Circadian rhythm refers to the rhythmic repetition of patterns that occur approximately every 24 hours, regulating various biological processes related to the day-night cycle. Infradian rhythm, which is longer than 24 hours, and ultradian rhythm, which is shorter than 24 hours, are not the correct terms for the 24-hour cycle. Non-REM rhythm does not specifically relate to the 24-hour day-night cycle, making it an incorrect choice.

4. Priorities designated as intermediate by the nurse are:

A. the nonemergency, non-life-threatening needs of the client.
B. those tasks that can be delegated to assistive personnel.
C. those tasks that can be performed at the end of the shift.
D. those tasks that can be performed at any time

Correct answer: A

Rationale: Priorities designated as intermediate by the nurse are those that are not urgent but still important, such as the nonemergency, non-life-threatening needs of the client. They do not impact the client's immediate physiological status but require attention. Intermediate priorities may need the skill level of an RN for completion and may have specific time requirements. Choices B, C, and D are incorrect because the priority being intermediate doesn't mean it can be delegated, done at a specific time, or done at any time; it simply indicates a non-urgent but necessary task for the client's well-being.

5. Which of the following statements by a client with gastroesophageal reflux disease (GERD) indicates adequate understanding?

A. "I should eat right before bedtime."?
B. "I should eat large meals."?
C. "I should sit up after eating."?
D. "I should lie flat after eating."?

Correct answer: C

Rationale: The correct statement for a client with GERD is, 'I should sit up after eating.' This helps prevent reflux by keeping the stomach contents down. Choice A is incorrect as eating right before bedtime can exacerbate GERD symptoms by increasing the likelihood of reflux during the night. Choice B is incorrect because consuming large meals can lead to increased stomach pressure and worsen reflux symptoms. Choice D is incorrect because lying flat after eating can promote reflux due to gravity assisting the flow of stomach contents into the esophagus, worsening GERD.