[robbiep]

Lombardy was utilising operating theatres and had ICUs and trauma bays full (70-80% is full because you have lost lost of your surge capacity), using the vents in all these areas. There was a shift to NIV because once you have no vents you let people die

[thu2111]

80% isn't full. 80% is 80% full and is about normal for an ICU. The whole point of having some headroom is you can lose it without being full!