Aging reduces cerebral blood flow regulation following an acute hypertensive stimulus
Alexander J. Rosenberg, Elizabeth C. Schroeder, Georgios Grigoriadis, Sang Ouk Wee, Kanokwan Bunsawat, Kevin S. Heffernan, Bo Fernhall, Tracy Baynard
Abstract
Reductions in cerebral blood flow and increases in flow pulsatility with aging are associated to cerebrovascular disease; however, little is known about how an acute hypertensive stimulus effects cerebral blood flow regulation in an aged population. Following the hypertensive stimulus, older adults elicit an attenuated increase in cerebral blood velocity and greater transmission of pulsatile velocity to the brain compared with young adults, demonstrating reduced cerebral blood flow regulation to elevated blood pressure responses with aging.
Topics & Concepts
Cerebral blood flowPulsatile flowStimulus (psychology)MedicineBlood pressureBlood flowInternal medicineCardiologyAnesthesiaPsychologyPsychotherapistCardiovascular Health and Disease PreventionCerebrovascular and Carotid Artery DiseasesTraumatic Brain Injury and Neurovascular Disturbances