That is a tough question to answer with certainty and my condolences to you if your mother has recently died. The combination of chronic obstructive pulmonary disease (COPD) and primary pulmonary hypertension (PPH) in and of itself is, unfortunately, a deadly one. The fact that she was chair ridden at a relatively young age and with a need for supplementary oxygen means her mortality risk is very high, regardless of any other factors (other medical problems, acute illnesses, etc). We know for sure that mildew, mold, and other pathogens exacerbate reactive airway disease and chronic obstructive pulmonary disease and that environment certainly would not have been a healthy one for her. Under her circumstances, her death would certainly primarily be more associated with her underlying medical problems. Again, so sorry for your loss.
Thank you for your answer
Thank you for your answer