If you did it twice and they died both times, sorry to burst your bubble, but it sounds like it didn’t work.
This more or less confirms my suspicion that if there is enough air entrained that you’re pulling large volumes out of the cava with an intro or a triple lumen, it’s already game over.
I’ve had 2 massive air emboli with hemodynamic collapse as well. Both misadventure with the Veress. Both rapidly recognized when CO2 dropped to nothing and sat probe started making the brown noise. Rapidly placed TEE both times and visualized air in RA, RV, and PAs, but none in the cava. Both patients got large doses of epinephrine and lived, neuro intact.