Canadian Practical Nurse Registration Examination (CPRNE) Practice Exam

The normal range for sodium in the blood is 135-145 mmol/L. Sodium is an essential electrolyte in the body that plays a critical role in maintaining fluid balance, nerve transmission, and muscle function. When sodium levels fall below the normal range, a condition known as hyponatremia can occur, which may lead to symptoms such as confusion, seizures, or even coma. Conversely, elevated sodium levels, or hypernatremia, can also create serious health issues, including dehydration and disturbances in mental status.

The specified range is referenced in clinical guidelines and is widely accepted in laboratory settings for assessing electrolyte levels. Being familiar with these normal values is crucial for effective patient care and management in nursing practice and ensures proper monitoring of patients who may be at risk for electrolyte imbalances.