What is the normal range for PaCO2?

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Multiple Choice

What is the normal range for PaCO2?

Explanation:
PaCO2 is the arterial partial pressure of carbon dioxide and shows how well the lungs are ventilating. The normal range is 35–45 mm Hg. Values within this range indicate adequate alveolar ventilation and stable acid-base status. If PaCO2 rises above 45 mm Hg, ventilation is insufficient (hypoventilation), which can cause respiratory acidosis. If PaCO2 falls below 35 mm Hg, ventilation is excessive (hyperventilation), which can cause respiratory alkalosis. Therefore, the 35–45 mm Hg range is the expected normal.

PaCO2 is the arterial partial pressure of carbon dioxide and shows how well the lungs are ventilating. The normal range is 35–45 mm Hg. Values within this range indicate adequate alveolar ventilation and stable acid-base status. If PaCO2 rises above 45 mm Hg, ventilation is insufficient (hypoventilation), which can cause respiratory acidosis. If PaCO2 falls below 35 mm Hg, ventilation is excessive (hyperventilation), which can cause respiratory alkalosis. Therefore, the 35–45 mm Hg range is the expected normal.

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