How long does it take untreated pneumonia to turn into acute respiratory distress syndrome?

Hours to days. Pneumonia can cause respiratory distress in a matter of hours to days. Some cases of pneumonia can be very mild and might not cause significant respiratory symptoms even if untreated. Adult respiratory distress syndrome (ARDS) can occur due to any number of conditions, pneumonia is just one of them. It can happen within minutes or hours of the trigger.
It's variable... Most patients with pneumonia do not develop acute respiratory distress syndrome (ards). ARDS can be caused by a variety of things (including infection), and it can occur rapidly (in less than an hour) or it can take days.

Related Questions

How long does untreated pneumonia take to turn into acute respiratory distress syndrome?

Generally no. Acute respiratory distress syndrome (ARDS) is a rapid process leading to respiratory failure and even death. Most causes will be completely unrelated to the lungs (major trauma, strokes, pancreatitis, aspiration). Very bad lung infections that lead to sepsis (whole body infection) can lead to ards. Read more...

How long would untreated pneumonia take to turn into acute respiratory distress syndrome, and then on to death?

Boy, oh boy. What are you waiting for?. Treat the pneumonia. You could die in an hour or never. Don't mess with this. Read more...
Hard to speculate. Pneumonia can be from a self healing virus or an aggressive bacteria. If memory serves me Jim Henson, the creator of the Muppets died from pneumococcal pneumonia a few days after initial symptoms. His error was to delay seeking care to keep working. He may have died anyway, but we'll never know. Why ever take a chance when resources are available. Read more...

Is it possible for people with acute respiratory distress syndrome who are in a coma to wake up?

Absolutely. The coma is frequently drug induced to allow systems to recover. ARDS is frequently able to be improved with treatment. Read more...
Yes. Often, coma is induced by medications to help healing and is completely reversible. Even if not induced by medication, patients can still wake up (and usually do) as they get better. Read more...