The nurse is reviewing the electrolyte results of a client and notes that the potassium level is 5.7. Which pattern on the cardiac monitor would the nurse expect to see?
ST depression
Tall peaked T waves
Prolonged ST segment
Prominent U wave
The Correct Answer is B
A. ST depression: ST depression is associated with hypokalemia or ischemia.
B. Tall peaked T waves: Hyperkalemia (K+ > 5.0 mEq/L) causes tall, peaked T waves due to abnormal repolarization. Severe hyperkalemia (>6.5 mEq/L) can lead to cardiac arrest.
C. Prolonged ST segment: Not a characteristic of hyperkalemia.
D. Prominent U wave: A U wave is seen in hypokalemia, not hyperkalemia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Magnesium sulfate: Magnesium sulfate is used for eclampsia and torsades de pointes, not for reducing shivering.
B. Kayexalate: This medication is used for hyperkalemia, not temperature control.
C. Acetaminophen: While useful for fever, acetaminophen does not stop shivering.
D. Diazepam: Shivering increases metabolic demand and body temperature. Diazepam (a benzodiazepine) is a muscle relaxant that helps control shivering in hyperthermic clients.
Correct Answer is C
Explanation
A. During dialysis: Some drugs can bind to the dialysis membrane or be removed unpredictably.
B. Give as scheduled: If given before dialysis, the drugs may be removed from circulation.
C. After returning from dialysis: Dialysis removes medications from the bloodstream. Giving medications before dialysis may result in drug loss. Oral medications should be given after dialysis to ensure proper absorption and effectiveness.
D. Hold the medications for today and restart tomorrow: Unnecessary, as the client needs their medications post-dialysis.
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