American Association of Critical-Care Nurses (AACN) Certification Practice Test

Within what range should bicarbonate levels typically fall?

1. 18-22

2. 22-28

3. 28-32

4. 32-36

The correct answer is: 22-28

Bicarbonate levels in the body are an important aspect of the acid-base balance, primarily regulated by the kidneys and the respiratory system. The normal range for bicarbonate levels is typically between 22 and 28 mEq/L. This range indicates that the body is maintaining a balanced pH level necessary for normal physiological function. When bicarbonate levels fall within this range, it suggests that the body's metabolic processes are functioning optimally, contributing to proper acid-base homeostasis. Values below this range may indicate metabolic acidosis, while values above this range may suggest metabolic alkalosis. Understanding this range is crucial for healthcare professionals to assess and interpret patients' acid-base status accurately, guiding necessary interventions and treatments.