A client came into the emergency room with a possible myocardial infarction. The provider orders a series of blood tests to be drawn, which lab should the nurse anticipate will be drawn?

Brain Natriuretic Peptide (BNP)

Total Lactate Dehydrogenase (LDH)

Troponin

Creatinine

Answer and Explanation

The Correct Answer is C

A. Brain Natriuretic Peptide (BNP) is a marker for heart failure, not the primary diagnostic test for myocardial infarction (MI).
B. Total Lactate Dehydrogenase (LDH) was historically used but is not specific for MI and has been replaced by troponin testing.
C. Troponin is correct. Cardiac-specific troponins (Troponin I and Troponin T) are the gold standard for detecting myocardial injury. Elevated levels indicate myocardial damage and are crucial for diagnosing MI.
D. Creatinine is important for assessing kidney function but is not a marker for myocardial infarction.

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Correct Answer is D

Explanation

A. Use of accessory muscles during inspiration is common in COPD as clients work harder to breathe. While this indicates respiratory distress, it is not necessarily an immediate emergency.
B. Large amounts of thick white sputum can indicate mucus production, which is common in COPD. If the sputum were yellow or green, it could suggest infection, requiring further assessment.
C. A barrel chest and clubbing are chronic changes in COPD due to prolonged air trapping and hypoxia. These findings do not require immediate intervention.
D. Oxygen flowmeter set on 8 LPM is correct. High-flow oxygen can suppress the hypoxic drive in COPD clients, leading to respiratory depression. The nurse should immediately lower the oxygen to a safer level (typically 1-3 LPM) and monitor the client’s respiratory status.

A. Heart failure B. Opioid overdose C. Brainstem injury D. Enlarged tonsils

Correct Answer is D

Explanation

A. Heart failure is associated with central sleep apnea, not obstructive sleep apnea (OSA), which results from airway obstruction.
B. Opioid overdose is linked to central sleep apnea, where the brain fails to send proper signals to the breathing muscles. It does not cause obstruction of the airway.
C. Brainstem injury can affect respiratory drive, but it is not a direct cause of OSA, which is due to mechanical airway obstruction.
D. Enlarged tonsils are correct. In children and adults, enlarged tonsils can block the airway, making them a common cause of OSA.

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A client came into the emergency room with a possible myocardial infarction. The provider orders a series of blood tests to be drawn, which lab should the nurse anticipate will be drawn?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is D

Explanation

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Correct Answer is D

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