I had a couple of episodes that sounded similar a few months ago when I started a new medication (Symbicort). It did seem like the 'power went out' for a few seconds. I thought it might have been a TIA too but my pulmonologist said it was more likely lack of blood supply from cardiac issues and they sent me for cardiac stress testing and an overnight Holter Monitor reading. I cut the med dose and I'm fine. My heart is also fine.

You might want to run it by your doctor and see what he thinks. I'm about a thousand years older than you are and I have COPD so don't know if there is any possibility the symptoms could be for the same reason.

judi