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 A
Explanation
A. Cardiac arrest: Cardiac arrest is a complication of severe hypothermia, not a risk factor.
B. Falling through the ice: Major risk factor for accidental hypothermia due to immersion in cold water.
C. Head trauma: Impaired thermoregulation in the brainstem can cause hypothermia.
D. Drug use: Certain drugs (e.g., alcohol, sedatives) impair the body’s ability to regulate temperature, increasing hypothermia risk.
Correct Answer is C
Explanation
A. Bradypnea, dizziness, and paresthesia: Bradypnea is associated with CO₂ retention, but paresthesia (tingling sensations) is more common in alkalosis due to calcium shifts.
B. Bradycardia and hyperactivity: Bradycardia can occur in severe acidosis, but hyperactivity is not a typical sign.
C. Headache, restlessness, and confusion: Respiratory acidosis occurs when CO₂ retention leads to cerebral vasodilation, increasing intracranial pressure and causing headache, restlessness, and confusion.
D. Irritability and seizures: Seizures are more common in severe alkalosis due to neuronal hyperexcitability.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
