which of the following lab values is elevated first after a client has a myocardial infarction
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Nursing Elites

NCLEX-PN

Nclex Questions Management of Care

1. Which of the following lab values is elevated first after a client has a myocardial infarction?

Correct answer: B

Rationale: The correct answer is troponin. Troponin levels are the most specific and sensitive markers for myocardial infarction, and they begin to rise within a few hours after the event. CPK, SGOT, and LDH are also enzymes that can indicate myocardial damage, but troponin is the earliest and most specific indicator. CPK typically rises 4-8 hours after an infarction, followed by SGOT (AST) at 8-12 hours, and LDH at 12-24 hours post-infarction.

2. When a drug is listed as Category X and prescribed to women of child-bearing age/capacity, the nurse and the interdisciplinary team should counsel the client that:

Correct answer: B

Rationale: When a drug is categorized as Category X, it signifies that there are significant risks of fetal abnormalities if taken during pregnancy. For this reason, women of child-bearing age/capacity should use reliable forms of birth control to prevent pregnancy while on the medication. This ensures that the client avoids the potential harm to the fetus. Option A is incorrect because pregnancy tests are not unreliable due to the drug, but rather the risk is related to potential harm to the fetus. Option C is incorrect as avoiding the drug only on days of intercourse does not provide sufficient protection against pregnancy. Option D is incorrect as the need for an endocrinologist is not directly related to the use of Category X drugs.

3. The nurse is teaching a teenage female about preventing the transmission of genital herpes. Which of the following statements should the nurse include?

Correct answer: C

Rationale: Genital herpes can be transmitted through oral, genital, and anal sex. It's crucial to understand that the infection can be spread through intercourse even when symptoms are not present. Option A is incorrect because genital herpes is not transmitted through toilet seats. Option B is correct as oral sex can transmit the virus. Option D is incorrect as drinking fluids after sex does not prevent the transmission of genital herpes.

4. What condition is mammography used to detect?

Correct answer: B

Rationale: Mammography is specifically used to detect tumors or abnormal growths, especially in breast tissue. It is not a tool for identifying pain, edema, or epilepsy. Therefore, the correct answer is 'tumor.' Pain is a symptom, edema is swelling, and epilepsy is a neurological disorder; none of these are conditions typically detected through mammography.

5. A test that can correctly identify those who do not have a given disease is:

Correct answer: A

Rationale: The correct answer is 'specific.' Specificity refers to the ability of a test to correctly identify individuals who do not have a particular disease. In this case, when the client's lab culture report is negative for the suspected infection, a specific test would correctly identify that the client does not have the disease. 'Sensitive' (Choice B) is incorrect as sensitivity refers to the ability of a test to correctly identify individuals who do have the disease. 'Negative culture' (Choice C) is incorrect as it does not describe the test's ability but rather the result itself. 'Marginal finding' (Choice D) is irrelevant to the concept being tested in this question.

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