Selection of Arteries Flashcards
considerations and precautions in vessel selection
accessibility, arterial occlusion
those that lie closer to surface are preferrable than those deep in tissue
accessiblity: superficial/deep
scar tissue is difficult to dissect through than tissue that has never been incised
accessiblity: surrounding structures
accessibility for vessel selection
superficial/deep; surrounding structures; size (diameters); proximity to aorta; accessibility for drainage from corresponding vein
factors governing selection of arteries for injection
age; weight (corpulence); disfiguration; disease; edema; obstruction; trauma; medico-legal requirements; cause and manner of death
most common method. cut made from edge of vessel to center of vessel. angle of cut goes 90 degrees parallel to directon of flow from blood; make incision with scalpel, scissors
transverse incision
made obliquely; not 90 degrees to direction of blood flow during life
diagonal incision
for drain tube; combination
“T” incision
form 3 sided area on surface of vessel; recommended for sclerotic arteries
wedge incision; triangular
most pop. looks similar to baseball stiches
baseball stitch
only has 2 stitches that penetrate skin; first and last; least leak proof incision; forms least prominent ridge; use on forehead region, cheek region
intradurmal
one end proceed with stitches; once done bring out needle and pull stitches together
single intradurmal
start closing at 1 end then start with another needle at opposite end; more leak proof
double intradurmal
most leak proof; spinal autopsy
lock stitch
go through both sides of incision
whip stitch (roll)