Not true, sunny. I've found journal articles dating back to 2003 discussing the efficacy of HFOV for adults with ARDS, others that discuss best practice strategies and
It has recently been shown that strategies aimed at preventing ventilator-induced lung injury, such as ventilating with low tidal volumes, can reduce mortality in patients with acute respiratory distress syndrome (ARDS). High-frequency oscillatory ventilation (HFOV) seems ideally suited as a lung-protective strategy for these patients...
Ventilator settings typically used for high-frequency
oscillatory ventilation (HFO) in adults provide acceptable gas
exchange but may not take best advantage of its lung-protective
aspects. We provide guidelines for HFO in adults with acute
respiratory distress syndrome that should optimize the lungprotective
characteristics of this ventilation mode...
Observational studies of high-frequency oscillatory ventilation in adults with the acute respiratory distress syndrome have demonstrated improvements in oxygenation. We designed a multicenter, randomized, controlled trial comparing the safety and effectiveness of high-frequency oscillatory ventilation with conventional ventilation in adults with acute respiratory distress syndrome... We conclude that high-frequency oscillation is a safe and effective mode of ventilation for the treatment of acute respiratory distress syndrome in adults.
The amplitude (tidal volume) of each oscillation is adjustable. We typically use 5-10 mL/kg not 5-10 mL/oscillation. And the Hz is also adjustable. The point of HFOV is to splint the lungs open and it does that quite effectively even in adults.