a client is admitted with a possible myocardial infarction which laboratory test result is most indicative of a myocardial infarction
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Nursing Elites

HESI RN

HESI 799 RN Exit Exam

1. A client is admitted with a possible myocardial infarction. Which laboratory test result is most indicative of a myocardial infarction?

Correct answer: B

Rationale: Serum troponin is the most specific and sensitive indicator of myocardial infarction. Troponin levels rise within 3-4 hours after myocardial damage, peak at 10-24 hours, and remain elevated for up to 10-14 days. Creatine kinase (CK) and myoglobin can also be elevated in myocardial infarction, but troponin is more specific to cardiac muscle damage. C-reactive protein (CRP) is a marker of inflammation and is not specific for myocardial infarction.

2. An adult male who lives alone is brought to the Emergency Department by his daughter. He is unresponsive, with minimal respiratory effort, and his pupils are fixed and dilated. At the daughter's request, the client is intubated and mechanically ventilated. Which nursing intervention has the highest priority?

Correct answer: B

Rationale: The highest priority nursing intervention in this scenario is to determine if the client has an executed living will. A living will provides guidance on the client's preferences for medical care in situations where they cannot communicate. This information is crucial in guiding the care team on how to proceed with treatment. Options A, C, and D, though important in certain circumstances, are not the highest priority in this situation where immediate decisions regarding the client's care need to be made.

3. A client with chronic obstructive pulmonary disease (COPD) is admitted with an exacerbation. Which laboratory value is most concerning?

Correct answer: A

Rationale: A serum potassium level of 6.5 mEq/L is concerning in a client with COPD exacerbation as it may lead to life-threatening arrhythmias, requiring immediate intervention. Hyperkalemia can cause cardiac arrhythmias, which pose a significant risk to the patient's life. Options B, C, and D are not typically associated with immediate life-threatening risks in the context of a COPD exacerbation.

4. A client with end-stage renal disease (ESRD) is receiving hemodialysis. Which laboratory value should the nurse monitor closely?

Correct answer: C

Rationale: The correct answer is C: Serum creatinine level of 2.0 mg/dl. In a client with ESRD receiving hemodialysis, serum creatinine should be closely monitored. Elevated creatinine levels indicate impaired kidney function. Monitoring serum calcium levels (Choice A), serum potassium levels (Choice B), and serum sodium levels (Choice D) is also important in clients with ESRD, but the most crucial indicator of kidney function in this case is serum creatinine.

5. A nurse is caring for a client with Diabetes Insipidus. Which assessment finding warrants immediate intervention by the nurse?

Correct answer: A

Rationale: The correct answer is A: Hypernatremia. In a client with Diabetes Insipidus, hypernatremia, an elevated sodium level in the blood, can lead to neurological symptoms such as confusion, seizures, or coma. Immediate intervention is necessary to prevent these serious complications. Excessive thirst (choice B) is a common symptom of Diabetes Insipidus but does not require immediate intervention. Elevated heart rate (choice C) and poor skin turgor (choice D) are important assessments but are not as critical as hypernatremia in this context.

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