My mom was diagnosed with moderate severe Alzheimer's today after scoring 15/30 on a mini mental evaluation. Over a year ago she scored 28/30. She also had stress tests yesterday that were positive and she has a heart cath next week. She is 74 and her short term memory has declined over the years but recently really dived. Anyone have thoughts on this or similar experience? I'm wondering if her dementia could be caused by a blockage if she has a blockage.