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Arterial blood gas (ABG) analysis measures the arterial blood pH value, which reflects the concentration of hydrogen ions in the blood. Chemically, a pH of 7.0 is considered neutral; values below 7.0 are classified as acidic, and values above 7.0 as basic or alkaline.
Physiologically, blood pH is typically maintained within a narrow range of 7.35 to 7.45. pH values outside this normal range have clinical significance:
If the pH value falls below 7.35 (acidosis), the blood is considered acidic, and this condition is often associated with high carbon dioxide levels or low bicarbonate levels.
If the pH value rises above 7.45 (alkalosis), the blood is considered basic or alkaline, and this condition is typically linked to low carbon dioxide levels or high bicarbonate levels.
Arterial blood pH value in blood gas interpretation?
Physiologically, blood pH is typically maintained within a narrow range of 7.35 to 7.45. pH values outside this normal range have clinical significance:
If the pH value falls below 7.35 (acidosis), the blood is considered acidic, and this condition is often associated with high carbon dioxide levels or low bicarbonate levels.
If the pH value rises above 7.45 (alkalosis), the blood is considered basic or alkaline, and this condition is typically linked to low carbon dioxide levels or high bicarbonate levels.