HI! We are currently using an 840 ventilator with the NEo mode software to give 'snippv' (syncronized intermittant positive pressure ventilation). I do not like it as it auto cycles alot and the flow rates seem too high for the baby. We have the SiPap system but our head neo will not let us use it as he says there's not been enough data to convince him it's a good thing. We Rt's LOVED it. Our babies (when we trialed the machine) weemed to be more comfortable and had decreased WOB eith it. There is now a study out of Italy comparing SiPAP and just CPAP and the SiPaP did better.
Gimpy RT