A nurse is reviewing the laboratory values for a client who has heart failure and is taking bumetanide. For which of the following results should the nurse notify the provider?
Calcium 10 mg/dL
Sodium 136 mEq/L
Potassium 2.3 mEq/L
Magnesium 1.4 mEq/L
The Correct Answer is C
A. Calcium 10 mg/dL: This calcium level is within the normal range (8.6-10.2 mg/dL) and does not require intervention.
B. Sodium 136 mEq/L: This sodium level is within the normal range (135-145 mEq/L).
C. Potassium 2.3 mEq/L: This potassium level is critically low; bumetanide is a loop diuretic that can cause hypokalemia, which can lead to dangerous cardiac dysrhythmias.
D. Magnesium 1.4 mEq/L: While slightly low, this magnesium level is only mildly decreased and not as immediately concerning as the potassium level.
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Correct Answer is D
Explanation
A. Schedule deep tissue massage with physical therapy. Massaging the area is contraindicated in cases of suspected deep vein thrombosis (DVT), as it can dislodge the clot, leading to a pulmonary embolism.
B. Monitor Homan's sign. Homan’s sign (pain in the calf upon dorsiflexion) is no longer considered a reliable or safe assessment for DVT due to the risk of dislodging a clot.
C. Obtain platelet aggregation studies. Platelet aggregation studies are not specific to diagnosing a DVT; instead, imaging is preferred.
D. Arrange for a venous duplex ultrasound. A venous duplex ultrasound is a non-invasive test that can confirm the presence of a DVT in the affected extremity.
Correct Answer is A
Explanation
A. The ST segment is above the isoelectric line. An elevated ST segment is a hallmark sign of acute myocardial infarction (MI), indicating myocardial injury.
B. The QRS intervals are 0.08 second. A QRS interval of 0.08 seconds is within the normal range and does not indicate myocardial infarction.
C. The QT interval is equal to the R to R interval. QT interval measurements are not diagnostic for acute MI.
D. The PR intervals are 0.15 second. A PR interval of 0.15 seconds is within the normal range and is not indicative of acute MI.