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The entry of a matrix A is written using two indices, say i and j, with or without commas to separate the indices: a ij or a i,j, where the first subscript is the row number and the second is the column number. Juxtaposition is also used as notation for multiplication; this may be a source of confusion. For example, if
Video of an ultrasound-assisted central line insertion through the internal jugular vein. Before insertion, the patient is first assessed by reviewing relevant labs and indication for CVC placement, in order to minimize risks and complications of the procedure. Next, the area of skin over the planned insertion site is cleaned.
IJ (lowercase ij; Dutch pronunciation: ⓘ; also encountered as Unicode compatibility characters IJ and ij) is a digraph of the letters i and j. Occurring in the Dutch language , it is sometimes considered a ligature , or a letter in itself.
The following pronunciation respelling key is used in some Wikipedia articles to respell the pronunciations of English words.It does not use special symbols or diacritics apart from the schwa (ə), which is used for the first sound in the word "about".
The catheter is introduced through a large vein—often the internal jugular, subclavian, or femoral veins. Ease of placement for a pulmonary artery catheter from easiest to difficult is: right internal jugular > left subclavian > left internal jugular > right subclavian. [5]
Hickman lines may remain in place for extended periods and are used when long-term intravenous access is required. Long-term venous catheters became available in 1968, and the design was improved by Dr. John W. Broviac (b. 1942), a nephrologist based in East Lansing, Michigan , in 1973.
As the internal jugular is large, central and relatively superficial, it is often used to place central venous lines. Such a line may be inserted for several reasons, such as to accurately measure the central venous pressure or to administer fluids when a line in a peripheral vein would be unsuitable (such as during resuscitation when ...
Venous cutdown is an emergency procedure in which the vein is exposed surgically and then a cannula is inserted into the vein under direct vision. It is used for venous access in cases of trauma, and hypovolemic shock when the use of a peripheral venous catheter is either difficult or impossible.