UTLight-transcranial Doppler Assessment of Regional Cerebral Autoregulation

Cerebral autoregulation (CA) is a complex mechanism that serves the essential and vital purpose of controlling cerebral blood flow and metabolism. A stable and optimal brain blood flow is imperative for normal brain function. Diabetes Mellitus (DM ) is associated with microvascular disease that alters CA and also with autonomic failure that may lead to orthostatic hypotension (OH). These conditions may lead to decreased brain blood flow in upright position. This observational study will compare two technologies that evaluate brain blood flow during standing up and other maneuvers in people with and without type 2 diabetes. These technologies are transcranial Doppler and UTLight technology (CerOx). This study will determine the safety and feasibility of CerOx technology for continuous monitoring of cerebral blood flow.