What is the normal pCO2 range in the arterial blood?

The normal range for arterial carbon dioxide pressure (pCO2) is 35 to 45 mmHg. This range is crucial for maintaining acid-base balance in the body. pCO2 is an indicator of respiratory function, specifically how well carbon dioxide is being expelled from the body. Values lower than 35 mmHg indicate possible hyperventilation or respiratory alkalosis, while values above 45 mmHg suggest hypoventilation or respiratory acidosis.

Understanding the normal range helps healthcare professionals in diagnosing and managing respiratory or metabolic disorders. Since maintaining appropriate levels of pCO2 is essential for homeostasis, recognizing that the normal range is between 35 and 45 mmHg allows for better clinical decision-making and patient care.