suture material Flashcards
how is the choice of suture material made
preference of the surgeon
to hold wound edges in apposition until the wound can endure normal stress without the suture support
purpose of suturing
digested and assimilated by the body during normal healing
absorbable
do all absorbable sutures cause tissue reaction
yes
what does absorption time depend on
location, composition of suture, presence of infection
should suture material be autoclaved
no it weakens it
produced from sub-mucosal layers of sheep or hog intestines
surgical gut (catgut)
what are the 2 types of catgut
plain and chromic
treated with chromic acid salts to prolong absorption time
chromic catgut
how long does it take plain catgut to absorb
3-5 days
how long does it take chromic catgut to absorb
10-15 days
synthetic material made from hydroxyacetic acid
polyglycolic acid
how long does polyglycolic acid last
14-21 days
degrades rapidly in an alkaline environment, dissolves faster in infected urine
dexon and vicryl
made from lactic and glycolic acids
polyglactin 910
how long does polyglactin 910 last
14-21 days
made from glycoside and lactide copolymers; multifilament
polysorb
how long does polysorb last
14-42 days; gone by 70 days
has potential for bacterial wicking
polysorb
newer synthetic polyester with less tissue drag and memory. requires multiple throws and better for slow healing wounds
polydioxanone/polyglyconate
how long does polydioxanone/polyglyconate last
180 days to absorb
monofilament used for fast healing in place of gut
pliglecaprone and gllycomer 631
how long do pliglecaprone and gllycomer 631 last
7-14 days; gone by 90-120 days
how long do non-absorbable keep their strength
at least 60 days
what happens if non absorbable are left in skin
may get encysted
when should non absorbable be removed
7-14 days post op
forms due to a pocket of dead space or unrestricted exercise with sutures
seroma
splitting open of part of surgical wound due to licking or chewing
dehiscence
licking or chewing completely through body wall
complete dehiscence
non-absorbable: excellent handeling, commonly used in cardiovascular surgery, can induce severe soft-tissue reaction, can serve as point of origin for infection
silk