02. suture Flashcards
properties of ideal suture
____ tissue reaction
* Gentle passage through tissues (low friction)
* High knot ____
* ____ Capillarity
* Maximum tensile strength/high breaking strength
* Consistent performance
* Good and predictable absorption
* Comfortable handling
Minimal tissue reaction
* Gentle passage through tissues (low friction)
* High knot safety and security
* No Capillarity
* Maximum tensile strength/high breaking strength
* Consistent performance
* Good and predictable absorption
* Comfortable handling
tensile force
pull from end to end
will mono or multi bend more easily
multi (although more drag)
bigger or small suture have more knot stability?
smaller
how is suture measured?
smallest 12-0
largest 7
smaller suture size =
less or more tensile strength
less or more breakable
less
more
more ___ suture is better for vessel ligation
flexible
multi or mono filament are more flexible?
multifilament
what are some downfalls of braided material
increased friction and more traumatic
____ process by which fluid and bacteria are wicked along multifilament material
capillarity
all ___ suture have capillarity
braided
what kind of suture should not be used in contaminated or infected tissues?
multifilament
__ is the measure of a fibers ability to resist deformation or breakage
tensile strength
Amount of force necessary to cause a knot to slip
knot stength
lower friction = ___ knot strength
decreased
2-0 monofilament suture will have ____knot strength
compared to 2-0 multifilament suture
decreased
2-0 monofilament suture will have ___ knot strength compares to 4-0 monofilament suture
decreased
___ diameter suture have decreased knot security
larger
vicryl is also called?
polyglactin 910
braided
desolved in 56-70 days
hydrolytic degradation
what type of suture takes 180 days to absorb?
PDS
polydioxanone
monofilament
what are some absorbable sutures
chromic gut
polyglactin 910(vicryl)
polyglycolic acid
caprolactone
poliglecaprone 25 (monocryl)
polydioxanone (PDS)
what are some non-absorbable sutures?
nylon
silk (ethilon)
polypropylene (prolene)
polymerized caprolactam
stainless steel wire
chromic gut is broken down by ___
phagocytosis
___ type of suture causes significant tissue reaction
chromic gut
chromic gut is mono or multifilament?
multifilament twisted
what happens to knot security of chromic gut when it gets wet?
decreases
what is chromic gut made of?
90% collagen
submucosa of sheep intestine
polyglactin 910 is also called ___
vicryl
polyglactin 910 is broken down by ___
hydrolysis
Vicryl
___ is rapidly degraded in infected urine
polyglactin 910 (vicryl)
polyglycolic acid
polyglactin 910 is a mono or muliti?
multi braided
Vicryl
___ is used in dental surgery
vicryl (polyglactin 910)
polyglycolic acid
high knot security but soft because it is a multifilament
polyglycolic acid is a mono or multi
synthetic multifilament braided
polyglycolic acid is broken down by ___
hydrolysis
polyglycolic acid suture is rapidly degraded in ___
urine
poliglecaprone 25 breaks down in how many days___
119 days (2-3 months
monocryl ➡monofilament
___ is used to close cystotomies
monocryl (poliglecaprone 25)→ mono-119
biosyn (glycomer 631) → mono-90-110
PDS (polidioxanone) →uncoated mono- 180
glycomer 631 takes ___ to break down
90-110 days
biosyn (synthetic monofilament)
glycomer 631 is used to close ___
enterotomies, cystotomies, body wall closure, fascia closure
(biosyn - synthetic monofilament that takes 90-110 days to break down)
polydioxanone takes ___ to absorb
180 days
PDS - monofilament
Polydioxanone is a mono or multi
synthetic monofilament
PDS - takes 180 days to breakdown
___ is the work horse of suture. used to close body wall, fascia, enterotomies and cystotomies
PDS (polydioxanone)
takes 180 days to break down
silk is absorbable or non-absorbable?
non
although in cats does not last forever
natural braided multifilament
silk is mono or multi
natural braided multi
silk is used for ___
cardiovascular surgery - tying off blood vessels
nylon is non-absorbable or absorbable?
non
synthetic monofilament
nylon is mono or multi?
mono
synthetic- non absorbable
nylon is used for
skin closure, ortho (ACL)
___ is non-absorbable but is susceptible to degradation
nylon
monofilament synthetic
___ suture is used for transplant patients that heal slowly
polypropylene
non absorbable, resistant to degradation, synthetic monofilament
polypropylene is mono or multi
Prolene
non absorbable, resistant to degradation, synthetic monofilament
polypropylene is used for __
tendon, ligament, fascial, and joint capsule
(things that take a long time to heal)
non absorbable, resistant to degradation, synthetic monofilament
polymerized caprolactam is mono or multi
non-absorbable synthetic multifilament
used for skin sutures only
(vetafil- used in large animal)
___ is not recommend for implantation in tissues due to sinus formation
polymerized caprolactam
vetafil - non-absorbable, synthetic nylon based multifilament
___ is used to close steronotomty
stainless steel suture
non-absorbable (monofilament or twisted)
___ is the most commonly used shape of a needle
1/2 circle
___ :commonly used and more easily
manipulated through superficial tissue
3/8 circle
(used for vessels)
___ needle is used for ophthalmic procedures
1/4 circle
___ needed is useful in confined location or deep tissue
5/8 circle
___ needle is used to place purse string suture
straight needle
taperpoint
push gently through tissues
sharp tip that pierces without cutting tissue
used for intestine, sub-q tissue and fascia
tapercut
combo of reverse cutting and taperpoint
used for heavy, thick fascia, tendon and vascular grafts
cutting
cutting edge on concave portion of needle, tends to cut out of tissue
reverse cutting
cutting edge on convex surface reducing risk of tissue cut out
used for thick tissue such as skin
a cutting needle has the edge on the ___ side of the needle
concave
a reverse cutting needle has the edge on the ___ side of the needle
convex
spatula point
used for ophthalmic procedures
what size and type of suture for a bladder
3-0 PDS (polydioxanone→absorbable monofilament)
monocryl ( poliglecaprone 25→absorbable monofilament)
biosyn (glycomer 631→absorbable monofilament)
what size suture and type of suture for the body wall?
2-0, 0 PDS (polydioxanone→absorbable monofilament- takes 180 days to absorb)
if immunocompromised could use a non-absorbable suture
what size or type of suture for subq
3-0, 2-0 monocryl ( poliglecaprone 25→absorbable monofilament)
what size and type of suture for skin closure
absorbable or non absorbable
