What signifies respiratory acidosis based on blood gas results?

What signifies respiratory acidosis based on blood gas results?

• A. High pH, low HCO3, low PaCO2
• B. Low pH, high HCO3, high PaCO2
• C. Low pH, low HCO3, low PaCO2
• D. High pH, high HCO3, low PaCO2

Answer: (B)

Respiratory acidosis is characterized by a decrease in blood pH due to an accumulation of carbon dioxide (CO2) in the blood, typically resulting from impaired respiratory function. In the context of blood gas results, this condition is indicated by a low pH, high PaCO2 (partial pressure of carbon dioxide), and often a high HCO3 (bicarbonate), as the body compensates for the increased acidity by retaining bicarbonate. In option B, the low pH signifies acidosis, while the high PaCO2 indicates respiratory failure to adequately remove CO2 from the body, confirming the diagnosis of respiratory acidosis. The presence of high HCO3 can occur as a compensatory mechanism, where the kidneys retain bicarbonate to counteract the acidity caused by the increase in CO2. This combination of low pH and high PaCO2 is crucial for diagnosing respiratory acidosis and differentiating it from other acid-base disorders.

Respiratory acidosis is characterized by a decrease in blood pH due to an accumulation of carbon dioxide (CO2) in the blood, typically resulting from impaired respiratory function. In the context of blood gas results, this condition is indicated by a low pH, high PaCO2 (partial pressure of carbon dioxide), and often a high HCO3 (bicarbonate), as the body compensates for the increased acidity by retaining bicarbonate.

In option B, the low pH signifies acidosis, while the high PaCO2 indicates respiratory failure to adequately remove CO2 from the body, confirming the diagnosis of respiratory acidosis. The presence of high HCO3 can occur as a compensatory mechanism, where the kidneys retain bicarbonate to counteract the acidity caused by the increase in CO2.

This combination of low pH and high PaCO2 is crucial for diagnosing respiratory acidosis and differentiating it from other acid-base disorders.