What is the normal sodium level range in the blood?

The normal sodium level range in the blood is considered to be between 135-145 mmol/L. This range is critical for various physiological functions, including the regulation of fluid balance, nerve impulse transmission, and muscle contraction. Maintaining sodium levels within this range is essential for homeostasis, as both hyponatremia (low sodium levels) and hypernatremia (high sodium levels) can lead to severe health complications.

The key to understanding this concept lies in recognizing that sodium is a vital electrolyte that impacts numerous body systems. When sodium concentration falls below 135 mmol/L, it can cause symptoms like confusion, seizures, or muscle cramps due to altered fluid balance. Conversely, levels above 145 mmol/L may also lead to complications like increased thirst, weakness, and, in severe cases, neurological issues.

The information regarding sodium levels is foundational for clinical assessments and interventions, making it important for practical nurses to remember the correct range for effective patient care.