Electrocardiographic markers of atrial myopathy are associated with dementia, but it is unclear whether 2-dimensional echocardiographic––defined LA function and size are associated with dementia. JAMA Senior Editor Philip Greenland, MD, discusses study findings with Wendy Wang, MPH, and Lin Yee Chen, MD, authors of Association of Echocardiographic Measures of Left Atrial Function and Size With Incident Dementia