Adams, a 63-Year-Old Retired Bookkeeper, Comes to the Emergency Unit

Multiple Choice

Adams, a 63-year-old retired bookkeeper, comes to the emergency unit with complaints of nausea and vomiting, muscle weakness, and fatigue. Nursing assessment includes a blood pressure of 180/100 mmHg and a slow irregular pulse rate. ECG results show shortened QT intervals. Which of the following electrolytes is most likely elevated?

A) Serum potassium
B) Serum calcium
C) Serum sodium
D) Serum magnesium