What causes people who gets (ards) and dies?

ARDS. Most common cause of death in patients with ARDS is muti system organ failure. Infections and respiratory failure are two other important causes of mortality.
See below. There are many causes of ARDS with infection being extremely common. Others include shock and trauma. ARDS is one of the worst forms of lung injury and has a high mortality rate despite the best efforts of physicians. Unfortunately the ventilator which keeps the patient oxygenated during the process can also create lung injury.