<unk> , sometimes called<unk>  positioning or<unk> ng refers to mechanical ventilation with the patient lying face-down<unk> . It improves oxygenation in most patients with acute respiratory distress syndrome (ARDS) and reduces mortality. The earliest trial investigating the benefits of<unk>  occurred in 1976. Since that time, many meta-analyses and one randomized control trial, the<unk> VA trial, have shown an increase in patients' survival with the more severe versions of ARDS. There are many proposed mechanisms, but they are not fully delineated. The proposed utility of<unk>  is that this position will improve lung mechanics, improve oxygenation, and increase survival. Although improved oxygenation has been shown in multiple studies, this position change's survival benefit is not as clear. Similar to the slow adoption of low tidal volume ventilation utilized in ARDS, many believe that the investigation into the benefits of<unk>  will likely be ongoing in the future.
Prone ventilation
Neurally adjusted ventilatory assist
High-frequency ventilation
Pressure support ventilation
Mechanical ventilation
Pressure-controlled ventilation
Positive end-expiratory pressure
Negative pressure ventilator