A client is seen in the emergency department with a heart failure exacerbation due to noncompliance with medications and fluid restrictions. Which key diagnostic result should the nurse assess to determine the severity of the client's heart failure exacerbation?
Blood urea nitrogen (BUN)
Troponin
B-type natriuretic peptide (BNP)
Electrocardiogram
The Correct Answer is C
A. Elevated BUN can indicate kidney dysfunction but is not specific for assessing heart failure severity.
B. Elevated troponin levels indicate myocardial injury or infarction, not heart failure exacerbation.
C. B-type natriuretic peptide (BNP) levels are directly correlated with the severity of heart failure, as they are released in response to ventricular volume expansion and pressure overload.
D. An electrocardiogram (ECG) can show arrhythmias or ischemia but does not directly measure heart failure severity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. The correct timing for taking a second nitroglycerin tablet is after 5 minutes if the first one does not relieve chest pain, not 10 minutes.
B. Nitroglycerin tablets should generally be replaced every 6 months to ensure potency, not 3 months.
C. Tingling of the tongue is a common side effect of nitroglycerin and does not require discontinuation of the medication or medical attention.
D. Nitroglycerin can cause orthostatic hypotension, so clients should change positions slowly to prevent dizziness or fainting.
Correct Answer is C
Explanation
A. Pleural effusion may be a complication of heart failure but does not directly explain the decreased urine output and elevated serum creatinine.
B. Myocardial infarction would present with different symptoms, such as chest pain, rather than decreased urine output and elevated creatinine.
C. Cardiorenal syndrome refers to the interdependence of the heart and kidneys, where chronic heart failure leads to worsening kidney function, causing symptoms like decreased urine output and elevated serum creatinine.
D. Heparin-induced thrombocytopenia (HIT) is related to the use of heparin and presents with low platelet counts, not decreased urine output and elevated creatinine.
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