Hi Laura. The short, NON- doctor answer to your Q? is YES. But I think you are mixing up our Terminology - and won't be able to get a good answer to care for your family member with COPD.
SO here goes nothing. . .
Their COPD is being diagnosed as Stage 4, which simply means the highest degree of medicines will be necessary to maintain a normal Breathing functions and daily activities. How much damage has been done only your X-ray and CT exams know.
But Respiratory Failure can be caused by many OTHER things, not just poor lungs. Of COURSE, IT doesn't help to have BOTH things together. Any ailment involving chest or lung infections (even a COLD) could put you in an ICU bed with RF.
Have a look at this article and a Good, long chat with the Doc to come up with a Good plan to avoid the nasty hospital food.
https://www.hopkinsmedicine.org/health/conditio...
be Well
How does respiratory failure impact the management of stage 4 COPD?
Respiratory failure is a serious complication that often occurs with stage 4 COPD and significantly affects treatment approaches. When your respiratory system can't take in enough oxygen or release sufficient carbon dioxide, it becomes a defining feature Show Full Answer