How hypoxia is devloped in BA?

How hypoxia is devloped in BA?

BA is an obstructive airway disease so it will decrease air inflow causing Hypoxia so paO2 fall down. This trigger hyperventilation. And hyperventilation wash out CO2 so in blood both paO2 and paCO2 Decreases (T1 resp failure). But if not managed urgently then eventually patient of asthma will have fatigue and resp muscles will fail to work and then paCO2 will then start rising (T2 RF)