So, even tho you are having heart arrthymias (with the bottom BP number over 100), apparently stroke
or brain damage did not cause your facial recognition
difficulties. But when you go in and see your neurologist, which they asked you to set up an appointment with him, plez do mention to him your various BP numbers.
As for your question about whether the sleep meds your old doc gave you may have caused your BP changes, no, I don't think so, because you had possible heart trouble before that.