10 demographic trends that are shaping the U.S. and the world. By DâVera Cohn and Andrea Caumont25 comments. At its core, demography is the act of counting people. But itâs also important to study the forces that are driving population change, and measure how these changes have an impact on peopleâs lives. For example, how does immigration affect U.S. population growth?
Type of Incisions. TYPE OF INCISIONS Upper Midline The upper midline incision provides access to the esophagus, hiatus, stomach and. duodenum, pancreas, and hepatobiliary system. If extended, it allows major hepatic resection, adrenalectomy, and splenectomy.
Midlines are longer than a regular IV. Midlines are usually put into a vein in the arm. Sometimes a leg vein is used for infants. It lasts longer than a regular IV, but not as long as a PICC line. It can usually be used for 2-4 weeks. Midlines are used for medications or fluids that do not irritate veins.