Which ABG value range represents normal PaCO2?

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Multiple Choice

Which ABG value range represents normal PaCO2?

Explanation:
PaCO2 shows how well the lungs are removing carbon dioxide, and the normal arterial CO2 partial pressure is about 35–45 mmHg. This range reflects balanced ventilation and acid-base status. If PaCO2 falls below 35, it indicates hyperventilation, often leading to respiratory alkalosis. If PaCO2 rises above 45, it indicates hypoventilation, often leading to respiratory acidosis. The other ranges are outside the normal window and would signal abnormal ventilation rather than normal gas exchange.

PaCO2 shows how well the lungs are removing carbon dioxide, and the normal arterial CO2 partial pressure is about 35–45 mmHg. This range reflects balanced ventilation and acid-base status. If PaCO2 falls below 35, it indicates hyperventilation, often leading to respiratory alkalosis. If PaCO2 rises above 45, it indicates hypoventilation, often leading to respiratory acidosis. The other ranges are outside the normal window and would signal abnormal ventilation rather than normal gas exchange.

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