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. Chloride level would be decreased: Metabolic alkalosis is often associated with hypochloremia, especially when caused by vomiting or diuretics. However, hypokalemia is more clinically significant.
B. Sodium level would be elevated: Sodium levels are not directly affected by metabolic alkalosis.
C. Magnesium level would be elevated: Magnesium levels are not significantly altered in metabolic alkalosis.
D. Potassium level would be decreased: A bicarbonate level of 30 mEq/L indicates metabolic alkalosis. In alkalosis, hydrogen ions shift out of the cells, and potassium moves into the cells, leading to hypokalemia.
Correct Answer is A
Explanation
A. Hypokalemia: Tap water enemas can cause excessive fluid shifts, leading to potassium loss via stool and dilutional effects. Multiple enemas can result in hypokalemia (low K⁺), which may cause muscle weakness and cardiac arrhythmias.
B. Hypocalcemia: Tap water enemas do not significantly affect calcium levels.
C. Hypernatremia: Tap water is hypotonic, leading to fluid absorption rather than sodium excess.
D. Hyperphosphatemia: Enemas can cause hypophosphatemia rather than excess phosphate levels.
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.