Ligatures Flashcards
what are ligatures for
tie off anatomical structures to aid in homeostasis
what is failure of ligature proportional to
volume of tissue it encloses
which is done first - tying off or transecting
tying off is done before transection
what is a circumferential ligature
wraps around the pedicle
where is a circumferential ligature placed
proximal on pedicle
what is circumferential ligature used for
vascular homeostasis
ligation
what is a transfixing ligature
goes through pedicle
where is transfixing ligature placed
distal on pedicle
distally to circumferential ligature
what is transfixing ligature used for
vascular homeostasis
ligation
larger vessels or pedicles
what extra stuff does transfixing ligature entail
there are 2 steps and 2 knots
what are the friction knots
millers
modified millers (aka strangle knot)
what are friction knots used for
fatty pedicles
pedicles under tension
vascular ligation
advantage of friction knots
greater knot security
define crush
hemostat placed on pedicle/vessel and used to crush tissue
hemostat then removed and ligature placed in crush
define flashing
hemostat placed on pedicle/vessel and then loosened while first 2 throws of ligature are placed
