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.
A midline catheter provides venous access in a large peripheral vein but does not enter the central venous system. Midlines are usually inserted into a vein situated in the antecubital fossa area of the arm and the tip extends into the vein of the upper arm up to 20cm. Midlines should not be extended past the axilla.