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. What is the most appropriate feeding method for a client who is unable to swallow?

A. Nothing by mouth
B. Nasogastric feedings
C. Clear liquids
D. Total parenteral nutrition

Correct answer: B

Rationale: Nasogastric feedings are the most appropriate feeding method for a client who is unable to swallow. Providing nothing by mouth can lead to nutritional deficiencies, while clear liquids might cause aspiration. Total parenteral nutrition is not necessary if the gastrointestinal tract is functional. Nasogastric feedings are preferred as they can safely provide nutrition without the risks associated with not eating or aspirating.

3. What is a predisposing factor for cancer of the tongue?

A. tobacco use
B. obesity
C. sun exposure
D. eating sweets

Correct answer: A

Rationale: Tobacco use is a well-established predisposing factor for cancer of the tongue. Smoking or chewing tobacco can lead to the development of oral cancers, including those affecting the tongue. Obesity, sun exposure, and eating sweets are not directly linked to an increased risk of tongue cancer. Obesity may be associated with other types of cancer, sun exposure can lead to skin cancer, and eating sweets is not a known risk factor for tongue cancer. Therefore, the correct answer is tobacco use, as it has a strong association with the development of tongue cancer, making it a significant predisposing factor.

4. What spinal change occurring with pregnancy alters mobility?

A. Scoliosis.
B. Kyphosis.
C. Lordosis.
D. Ankylosing spondylitis.

Correct answer: C

Rationale: The correct answer is 'Lordosis.' During pregnancy, the enlarging uterus places increased weight on the spine, causing an exaggerated inward curvature known as lordosis. This change alters mobility by shifting the center of gravity forward, leading to a compensatory change in posture. Scoliosis (choice A) is a sideways curvature of the spine, not typically associated with pregnancy. Kyphosis (choice B) is an exaggerated outward curvature of the spine, while ankylosing spondylitis (choice D) is a chronic inflammatory condition affecting the spine, neither of which are directly related to the spinal changes seen in pregnancy.

5. When assessing a client's risk for elimination impairment, which of the following factors is least relevant?

A. current medications
B. ambulation abilities
C. family history
D. hydration status

Correct answer: C

Rationale: When assessing a client's risk for elimination impairment, family history is the least relevant factor to consider. Current medications can affect elimination functions through side effects, ambulation abilities can impact mobility to access toileting facilities, and hydration status directly influences urinary output and bowel function. Family history, although providing some context, does not have a direct impact on the client's current risk of elimination impairment.