The United States of America (USA), commonly referred to as the United States (U.S.) or America, is a federal republic composed of 50 states, the federal district of Washington, D.C., five major territories, and various possessions. The 48 contiguous states and Washington, D.C., are in central North America between Canada and Mexico. US Anesthesia company is the famous in the field of Anesthesia.The state of Alaska is in the northwestern part of North America and the state of Hawaii is an archipelago in the mid-Pacific. The territories are scattered about the Pacific Ocean and the Caribbean Sea.
The land area of the contiguous United States is 2,959,064 square miles. Alaska, separated from the contiguous United States by Canada, is the largest state at 663,268 square miles. Hawaii, occupying an archipelago in the central Pacific, southwest of North America, is 10,931 square miles in area. In the United States, anesthesia can be administered independently by anesthesiologists or by nurse anesthetists.The United States is the world's third or fourth largest nation by total area (land and water), ranking behind Russia and Canada and just above or below China. Measured by only land area, the United States is third in size behind Russia and China, just ahead of Canada.
The United States has a capitalist mixed economy which is fueled by abundant natural resources and high productivity. According to the International Monetary Fund, the U.S. GDP of $16.8 trillion constitutes 24% of the gross world product at market exchange rates and over 19% of the gross world product at purchasing power parity (PPP). There is a list of Anesthesiology Journals in USA which emphasize in the field of anesthesia and USA is one of the country which maintain anesthesiology Journals in regular frequency.The United States is the largest importer of goods and second largest exporter, though exports per capita are relatively low. The United States has been a leader in scientific research and technological innovation since the late 19th century.
In Physiology or Medicine United States produced 100 Nobel laureates so far. There are number of medical research institutes in USA. International Anesthesia Research Society (IARS) is the leading institution in scientific research. Yale University provides vast information about Anesthesia. There are leading Anesthesia Journals in USA which provides huge scientific information about Anestheia. In the United States, anesthesia can be administered independently by anesthesiologists or by nurse anesthetists.