In this article. Mitral valve prolapse is a common cause of a heart murmur caused by a leaky heart valve. Most cases of mitral valve prolapse are not serious and only need to be monitored. Mitral valve prolapse is associated with many other symptoms and conditions.n mitral valve prolapse, the valve slips backward due to the abnormal size of or damage to the mitral valve tissues. For most people with mitral valve prolapse, the cause is unknown.
Illinois is the most populous of the states and North Dakota the least. A 2012 report from the United States Census put the population of the Midwest at 65,377,684. The Midwest is divided by the Census Bureau into two divisions. The East North Central Division includes Illinois, Indiana, Michigan, Ohio and Wisconsin, all of which are also part of the Great Lakes region.
The United States is composed of many regions, areas with a common physical or cultural aspect. While there is no official designations regarding which states do or do not fit within each region, there are some generally accepted guidelines. Also, one particular state may be part of several different regions. For instance, you can assign Kansas as a Midwestern state and just as easily call it a Central state, just as you could call Oregon a Pacific state, a Northwestern state, or a Western state. A List of the Various Regions of the United States. Atlantic States: The states that border the Atlantic Ocean from Maine in the north to Florida in the South. Does not include the states bordering the Gulf of Mexico, even though it is part of the Atlantic Ocean.