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 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.
Correct Answer is {"dropdown-group-1":"A","dropdown-group-2":"C"}
Explanation
Respiratory acidosis- Due to opioid-induced respiratory depression (hypoventilation, CO₂ retention). Hypervolemia: IVF at 150ml/hr is a relatively high rate for someone with CHF. Even isotonic fluids like 0.9% sodium chloride can accumulate quickly and worsen cardiac workload.
Incorrect answers:
- Metabolic alkalosis: typically occurs due to vomiting or excessive bicarbonate intake.
- Osteomyelitis: Infection of the bone; not a direct risk in this scenario.
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