Definition. Aortic valve regurgitation â or aortic regurgitation â is a condition that occurs when your heart's aortic valve doesn't close tightly. Aortic valve regurgitation allows some of the blood that was just pumped out of your heart's main pumping chamber (left ventricle) to leak back into it.efinition. Aortic valve regurgitation â or aortic regurgitation â is a condition that occurs when your heart's aortic valve doesn't close tightly. Aortic valve regurgitation allows some of the blood that was just pumped out of your heart's main pumping chamber (left ventricle) to leak back into it.
Prosper, Texas. Prosper is an affluent suburban town located in Collin and Denton counties within the state of Texas, United States. The town is located within the Dallas-Fort Worth metropolitan area. As of the 2010 census, the population was 9,423; As of 2017, the estimated population was 21,685.
Addison is an incorporated town in Dallas County, Texas, in the United States. Addison is situated to the immediate north of the city of Dallas. The town's population was 13,056 at the 2010 census. Addison and Flower Mound were the only two Texas towns with a population greater than 10,000 in the 2010 census; since then the towns of Prosper and Trophy Club have also exceeded 10,000 in population estimates.