I have recently started having memory loss. I can t remember words that I know, and struggle with every day words. My blood pressure has always been low, if anything. I did suffer three COPD exacerbations last year, which landed me in the hospital (ICU) for a few days. The second time I was intubated, and the third (on Christmas Eve 2016), they used a BI-Pap to keep me alive until my O2 levels improved. Is the lack of O2 I suffered possibly causing this?