Hello @Arina. My dad has mixed and vascular dementia and he got his pacemaker 7 years ago too. He had dementia then but was undiagnosed. There is about 18 months left on the battery. He got it because the doctor said he was at risk of blackouts and could hurt himself. So if it gets to the point of replacement I think we will have to have an informed conversation with the doctor. I was under the impression not replacing wouldn't mean a dignified demise but could be something horrific like a stroke. The thought of him dealing with a stroke and dementia is quite unbearable.As I read the replies, I wonder how things have panned out. I hope you are well.
My husband was fitted with a pacemaker in his early stages of vascular dementia (it was not officially diagnosed then). VD was diagnosed shortly afterwards and it's now 7 years later... The pacemaker extends life; sadly not quality of life.