Dad has mixed dementia and is 90 in May. He lives alone with my support. He has a history of collapse dating back to the 1990's but only three in all that time.
He had a pacemaker in 2017 due to another collapse and found to have some heart block. A year later he had another and this is when we noticed the start of the memory loss. He has had a low HR for many years.
His confusion the last couple of weeks has been worse and he fell one night ( it was frosty) on the steps. I found out next day. The day later he seemed back to normal but then just dropped in front of me. Out for about 5-10 secs. Paramedics said he was in AF and I noticed the HR at 100. Usually at 60 controlled by the pacemaker. Some confusion started then after this attack
I wonder if he is having some arrhythmia which makes him pass out which reverts to AF.
This episode has resulted in delirium for a day or two which has never happened before. Now he has picked up Covid in hospital. They cant find anything wrong with him apparently. They have lowered his BP meds and upped the bisoprolol