Anesthesia Technologist Practice Exam

What are the expected normal values for sodium, potassium, and ionized calcium in an adult electrolyte panel?

1. Na 120; K 3.0; iCa 2.5

2. Na 140; K 4; iCa 1.2

3. Na 150; K 5.5; iCa 4.0

4. Na 130; K 3.5; iCa 3.0

The correct answer is: Na 140; K 4; iCa 1.2

The answer provided reflects the expected normal values for sodium, potassium, and ionized calcium in an adult electrolyte panel. Normal ranges for these electrolytes typically denote how the body maintains homeostasis, crucial for various physiological functions. Sodium's normal range is approximately 135-145 mEq/L, with the value of 140 falling well within this standard, indicating healthy sodium levels essential for fluid balance and cellular function. Potassium's normal range is from 3.5 to 5.0 mEq/L, and a value of 4 indicates that potassium levels are optimal, supporting muscle contraction, nerve function, and heart rhythm regulation. Ionized calcium (iCa) levels generally range from 1.1 to 1.3 mmol/L, with the value given as 1.2 situated comfortably within this range, which is vital for bone health, muscle contractions, and neurotransmitter release. In summary, the values presented in the correct option align precisely with the normal physiological ranges established in clinical practice, indicating that the body's electrolyte balance is maintained, aiding in numerous bodily functions and systems.