Cannulation. Cannulation is the process of inserting a tube (cannula) into a passage, duct or cavity to supply or withdraw material or data. In medical dictionary, cannulation is a process used to deliver or remove body fluids under various medical conditions, like withdrawing blood for sampling. Effective needle length is extended by half the length of the original needle in cannula by surrounding either the inner or outer surfaces of a trocar needle.
Van Buren, AR. Van Buren ( /vÃ¦n bjÊÉrÉn/) is the second largest city in the Fort Smith, Arkansas-Oklahoma Metropolitan Statistical Area and the county seat of Crawford County, Arkansas, United States. The city is located directly northeast of Fort Smith at the Interstate 40 - Interstate 540 junction.
Van Buren County. Van Buren County was formed November 1833, from parts of Conway, Independence and Izard counties. The county was named for Martin Van Buren who was Vice President of the United States at that time, and Van Buren County was the 29th county of the State of Arkansas. The landscape of the county is rugged and mountainous in the north and rugged to rolling terrain in the south.