I get relatively short episodes of paroxysmal atrial fibrillation, normally every few days. The cause seems to be an event causing physical or mental stress, but the unusual feature is that all these episodes occur shortly after I wake up from sleep in the middle of the night, even if the precipitating event occurred up to 18 hours earlier.
I notice that the BUPA guide to atrial fibrillation mentions obstructive sleep apnoea as a possible cause. Is it worth asking my doctor whether this might be true in my case.