Would Hyperventilation Increase Po2?

We found a significant rise in arterial pO2 during hyperventilation with a lesser increase in thoracic transcutaneous pO2. When measured on arm the transcutaneous pO2 did not even rise significantly. After hyperventilation pO2 fell to values below the resting level.

Does hyperventilation increase or decrease pO2?

During hyperventilation, which lowered arterial PCO2 and increased pH of the blood, the average PO2 decreased in proportion to the decrease in arterial PCO2.

Does hyperventilation increase partial pressure?

Alveolar hyperventilation leads to a decreased partial pressure of arterial carbon dioxide (PaCO₂). In turn, the decrease in PaCO₂ increases the ratio of bicarbonate concentration to PaCO₂ and, thereby, increases the pH level; thus the descriptive term respiratory alkalosis.