Lab: Suture, Bandaging and Asepsis Flashcards
T/F: Suture should be as strong as the tissue being sutured, not stronger nor weaker.
True
What is the measurement of a suture’s ability to resist breakage?
Tensile strength
Where does most suture break?
At the knot (= weakest point)
What is the ability of fluid or bacteria to wick along suture?
Capillarity
Absorbable suture is suture that looses most of its tensile strength by ___ days.
60
How is suture treated to decrease tissue drag?
Coating
What is the trade name for Poliglecaprone 25?
Monocryl
T/F: Chromic gut is absorbable.
True
What is the trade name for Polyglactin 910? What type of suture is it?
Vicryl
Synthetic braided absorbable
What is Vicryl Plus coated with?
Tricolsan (antimicrobial)
What is the trade name for polyglycolic acid? What type of suture is it?
Dexon
Synthetic absorbable braided
What are your options for quickly absorbed suture to close non-infected bladders?
Monocryl (Poliglecaprone 25)
Caprosyn (Polyglytone 6211)
What is the trade name for Glycomer 631? What type of suture is it?
Biosyn
Synthetic monofilament absorbable
Which suture, similar to PDS, maintains strength for 6 weeks? For how long does PDS maintain 50% TS?
Maxon (Polyglyconate)
6 months
Which suture types absorb in a short amount of time? Intermediate? Long? Include what type of suture is it.
Short: Vicryl RAPIDE (polyglactin 910- synthetic braided), Monocryl (poligelcaprone 25- synthetic monofilament), Caprosyn (polyglytone 6211- synthetic monofilament)
Intermediate: Vicryl (polyglactin 910- synthetic braided), Biosyn (glycomer 631- synthetic monofilament)
Long: PDS (polydioxanone - synthetic monofilament), Maxon (polyglyconate- synthetic monofilament)
What is the problem with using silk suture? When is it used?
Highly inflammatory
For certain cardiovascular surgery
What is the trade name for polypropylene? What type of suture is it?
Prolene
Synthetic non-absorbable monofilament
What is the trade name for nylon? What type of suture is it?
Ethilon
Synthetic non-absorbable monofilament
What is the trade name for polymerized caprolactam? What organ is it exclusively used in?
Vetafil
Skin
What is the brand name for polyester? What type of suture is it?
Ethibond
Braided synthetic coated non-absorbable
What is the part of the eyeless needle called where the suture is attached?
Swage
What type of needle is this?
J needle
What is the most commonly used curved needle size?
1/2 circle
(3/8 circle also common)
Which type of needle can you NOT use for skin?
Taperpoint
What type of needle dissects through friable tissue without cutting?
Blunt point
What needle is typically used for skin?
Reverse cutting
How do bandages promote healing?
By maintaining a CO2/acid environment initially at the level of the wound and disscociating O2 from Hb to increase oxygenation
Which layer of the bandage is used to provide support and decrease dead space?
Secondary
What risk arises if exudate reaches the tertiary layer of a bandage?
Bacterial strike through
What part of the bandage may you leave in place if you change the bandage?
Stirrups
What 2 techniques can you use to prevent a thoracic bandage from slipping?
Tape overlay
Torso strap
What type of bandage is this?
Tie Over
What type of bandage is commonly used for a degloving injury?
Modified Robert Jones
In which direction do you need to apply cast padding?
Distal to proximal
What bandage is used primarily for initial fracture stabilization distal to the elbow or stifle?
Robert Jones
What type of split is used to temporarily splint fractures or luxations proximal to or including the elbow or stifle?
Spica splint
What type of bandage is used to create a non-weight-bearing forelimb?
Velpeau spling
(Velpeau for elbow)
Which bandage is used to create a non-weight-bearing hind limb, provides femoral abduction, and inward hip rotation?
Ehmers sling (aka Figure Eight sling)
(Ehmers for femurs)
Which bandage type that creats a NWB hind limb allows for limited motion? Why do you want limited motion?
Robinson Sling
To prevent/meliorate disuse atrophy and promote healing
What is used under a full leg cast to wick away moisture and protect the skin?
Stockinette
Asepsis or Antisepsis?
- Prevent wound contamination by destroying organisms before they enter the wound
- Killing of bacteria after they have entered the wound
- ASEPSIS: Prevent wound contamination by destroying organisms before they enter the wound
- ANTISEPSIS: Killing of bacteria after they have entered the wound
Disinfection or Sterilization?
- The process of destroying all organisms; bacteria, fungi, spores.
- Use of germicidal substances to kill most micoorganisms.
- Sterilization: The process of destroying all organisms; bacteria, fungi, spores.
- Disinfection: Use of germicidal substances to kill most micoorganisms.
T/F: Most surgical wounds contain bacteria by the time the procedure is completed.
True
What is the minimum contact time for surgical site prep scrub?
5 minutes
What is the primary aerial bacteria source during surgical prep?
You (surgical personnel)
Which sterilizaton method is most common and causes the destruction or denaturation of cellular proteins?
Steam sterilization- Autoclaving
What is a disadvantage of using an autoclave to sterilize surgical instruments, such as scissors?
It dulls sharp instruments
How long do you need to aerate gas permiable items after chemical sterilization with ethylene oxide?
24 hours
What chemical sterilization agent can be used for scopes and other equiptment that cannot be sterilizaed by other methods?
“Cold” desinfection with Glutaraldehyde
(Sterilization in 10 hours, disinfection in 10 min)
Match the sterile pack shelf life with the packaging:
1 year
9 months
10 weeks
8 weeks
3 weeks
- 2 layers: polyethylene + muslin
- 2 layers: crepe paper + muslin
- 1 layer: crepe paper
- Heat-sealed paper or transparent plastic pouch
- 2 layers: double muslin wrap
- 2 layers: polyethylene + muslin: 9 months
- 2 layers: crepe paper + muslin: 10 weeks
3. 1 layer: crepe paper: 3 weeks SHORTEST
4. Heat-sealed paper or transparent plastic pouch: 1 year LONGEST
- 2 layers: double muslin wrap: 8 weeks
What is the most secure method of vessel occlusion?
Ligatures
What scalpel handle number and corresponding blade number is used in small animals? Large animals?
Small #3, 10 blades
Large #4, 20 blades
Which scalpel grip is best for short precise incisions? Which is best for long incisions?
Short: Pencil grip
Long: Fingertip grip
What scissor grip that with practice is easier than hyperextending the wrist or trying to cut with the non-dominant hand to cut toward yourself?
Backhand grip
