What needle type is used for skin?
Reverse cutting
This needle increases the risk of suture “pull through”
Cutting
Why are cutting needles preferred over tapered needles for the skin?
they are sharper and less traumatic
This needle is used for soft tissues (GIT, SC, bladder) but NOT skin
taperpoint
this needle is used for friable tissues (liver, spleen)
blunt point
Which needle has more tissue drag, swaged or nonswaged?
Nonswaged
What curved needle size is used for ophthalmic procedures?
1/4
what size needle is used for deep tissue?
5/8
What size needle is used through superficial tissue?
3/8
This needle shape is used for ear hematoma procedures/tension relieving sutures on skin
straight
Needle shape used for placing suture under the lateral fabella for lateral stabilization of an ACL rupture?
J needle
What’s the relationship b/w suture size and tensile strength?
larger size= inc TS
If there’s pathology present in a tissue, would absorbable or non-absorbable suture be more appropriate?
non-absorbable
[slower healing tissue, want a longer lasting suture]
What should dictate the strength of the suture used?
strength of the tissue
T/F:
using coated suture will result in more secure knots.
false
Absorbable suture loses most of it strength by when?
60 days
Coated suture absorbs quickly or slowly?
slowly
What are the function(s) of suture coating?
dec tissue drag,
inc pliability
What antibiotic coating is commonly used for suturing infected tissue?
Triclosan
This suture is very inflammatory and has unpredictable absorption in tissues; What is the suture and what 2 forms of it are available?
Catgut
- plain (lasts 1-2 wks)
- Chromic (2-3 wks)
Vicryl Rapide is a very short acting suture. What’s it indicated for?
Dental Sx
Vicryl plus is indicated for what tissue? Why?
- inf’d wounds
2. Tricolsan coating
T/F:
Vicryl is a great choice for bladder Sx
False
it’s braided–if it goes thru the mucosa, it will degrade rapidly d/t urine
What is [regular] vicryl indicated for?
ophthalmic Sx
Name two long-lasting absorbable sutures
Maxon & PDS
Biosyn is indicated for what tissues/procedures?
enterotomy, cystotomy, body wall, SC
Which of the following is a short-acting absorbable monofilament suture?
a. Dexon
b. PDS
c. Monocryl
d. Vicryl
C. Monocryl
[Dexon and Vicryl are both braided;
PDS is long-lasting]
What is silk indicated for? What’s the main disadvantage of using it?
- CV Sx
2. v inflammatory
What is stainless steel indicated for?
- Orthopedic use
2. skin staples
What is Prolene indicated for?
Holding together tendons, ligaments, joint capsules
What is Ethilon (Nylon) indicated for?
- skin closure
2. orthopedic repair (lat stabilization of ACL rupture)
What tissues should Vetafil be used for?
SKIN ONLY!
[very reactive–> sinus/granuloma formation]
What is Ethibond (Polyester) indicated for?
Musculoskeletal Sx
[lat stabilization of ACL Sx]
What is the weakest part of the suture?
the knot