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 C
Explanation
A. Atrial fibrillation is characterized by an irregularly irregular rhythm and absence of distinct P-waves.
B. Atrial flutter typically presents with "saw-tooth" flutter waves rather than extra P-waves.
C. Premature atrial contractions (PACs) are identified by the presence of extra P-waves on an ECG.
D. Stable angina is related to chest pain and does not have specific ECG findings such as extra P-waves.
Correct Answer is ["24"]
Explanation
To calculate the IV pump rate, you'll need to use the formula: (Ordered amount of medication (units/hr) × Volume of fluid in mL) / Amount of medication in the volume = IV pump rate in mL/hr. For the given scenario, the ordered amount is 1,200 units/hr, the volume of fluid is 500 mL, and the amount of medication in the volume is 25,000 units. Plugging these numbers into the formula gives you: (1,200 units/hr × 500 mL) / 25,000 units = 24 mL/hr. Therefore, the nurse should set the IV pump to deliver 24 mL/hr.
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