OverviewA heart attack or stroke may occur when an area of plaque (atherosclerosis) ruptures and a clot forms over the location, blocking the flow of blood to the organ's tissues.
Update Date 6/1/2015
Updated by: Daniel Kantor, MD, Kantor Neurology, Coconut Creek, FL and Immediate Past President of the Florida Society of Neurology (FSN). Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.