Aortic valve regurgitation is a problem with the aortic valve. The aortic valve allows blood to flow from the heart 's lower left chamber (ventricle) into the aorta and to the body.When the heart rests between beats, the valve closes to keep blood from flowing backward into the heart. When you have aortic valve regurgitation, the aortic valve doesn't close as it should.he most common causes of sudden (acute) aortic valve regurgitation include: 1  Endocarditis, which is an infection in the heart. 2  Aortic dissection, which means that the inner layer of the aorta separates from the middle layer. 3  Problems with a replacement (artificial) aortic valve.
Fort Harrison, MT. Fort Harrison is located in west Montana. Fort Harrison is part of Lewis And Clark County. On average, the public school district that covers Fort Harrison is better than the state average in quality. The Fort Harrison area code is 406.
HARRISON COUNTY. The original inhabitants of this area were the Caddo Indians. Anglo settlers, mostly from the southern U. S., began arriving in the 1830s. Many obtained Mexican land grants in 1835, and population increased following Texas independence in 1836. The Republic of Texas Congress created Harrison County in 1839 and named it for Texas revolutionary leader Jonas Harrison (1777-1836). Marshall became the county seat in 1842. Harrison County was predominantly rural and agricultural, with cotton as the main crop. By 1850, it was the most populous, as well as one of the richest counties in antebellum Texas.