L02: Surgical Instrumentation (Case)

Question 1

least traumatic method for incising tissue

Answer 1

scalpel

Question 2

15 scalpel blade used for:

Answer 2

small animals ie. cat skin, cutting into bowel/bladder, etc.

Question 3

12 scalpel blade used for:

Answer 3

dissection around something like for dehorning or declawing

Question 4

11 scalpel blade used for:

Answer 4

puncturing bowel, joint capsule, small ureters, etc.

Question 5

10 scalpel blade used for:

Answer 5

skin and viscera; cuts deeper with less pressure

Question 6

2 acceptable grips for scalpel

Answer 6

fingertip grip

pencil grip

Question 7

purposes of scissors

Answer 7

dissection or sharp cutting

Question 8

disadv. of scissors

Answer 8

inc. tissue trauma due to shearing forces

Question 9

adv. of scissors

Answer 9

ease of cutting redundant tissue

improved visibility and control

Question 10

adv. of curved vs. straight scissors

Answer 10

curved improve control and visibility

Question 11

3 main types of scissors

Answer 11

blunt/blunt
sharp/blunt
sharp/sharp

Question 12

purpose of tissue forceps

Answer 12

tissue manipulation with non-dominant hand

-use pencil grip

Question 13

chars. of tissue forceps

Answer 13

tweezer-like
pointed tips for manipulation of CT
atraumatic serrated tips used for blood vessel manipulation

Question 14

Debakey forceps used for:

Answer 14

to grasp viscera; have gentle hold with mild serations

Question 15

Which more traumatic: Rat Tooth or Brown-Adson

Answer 15

brown-adson (because have to crush to grab the skin)

Question 16

Rat tooth tissue thumb forceps aka

Answer 16

Adson tissue thumb forceps

Question 17

Which clamps are crushing and which are non-crushing

Answer 17

crushing: Hasted mosquito, Rochester carmalt

non-crushing: Doyen intestinal clamp

Question 18

main fx of Halsted mosquito clamp

Answer 18

used to crush vessels; teeth go horizontal, which should be applied perpendicular to vessels

Question 19

main fx of Rochester carmalt clamp

Answer 19

crushes collagen-dense tissues like uterine body; grooves go parallel

Question 20

main fx of Doyen intestinal clamp

Answer 20

to atraumatically hold off bowel

Question 21

selection of needle holders

Answer 21

• depends on size of needle being manipulated, NOT surgeon size
• longer needle holders increase power (have longer moment arm)
• shorter needle holders increase precision

Question 22

use for Mayo Hegar needle holders

Answer 22

suturing body wall, large dog bladder, etc.

Question 23

use for Ryder needle holders

Answer 23

(shorter than Mayo Hegar)

-small dog/cat bladders, ureter sutures, etc.

Question 24

use for Microvascular needle holders

Answer 24

cystotomies, etc.

Question 25

3 grip styles for needle holders

Answer 25

1) Thumb-third finger or "tripod" grip (used in lab) - slower, more precise 2) Thenar-eminence grip 3) Palm grip - 2 and 3 are faster, less precise

Question 26

purpose of retractors

Answer 26

retraction of neurovascular structures, muscle, bone

Question 27

2 classes of retractors

Answer 27

self-retaining | hand-held

Question 28

use of Finochietto retractor

Answer 28

retraction of sternum, ribs

Question 29

Know what Gosset, Pediatric Balfour, Large Balfour, Hohmann, Malleable retractors look like

Answer 29

:)

Question 30

use of Hohmann retractors

Answer 30

looking into joints

Question 31

purpose of suction tips

Answer 31

removal of blood or fluid from operative site | -can be traumatic to tissues if used inappropriately

Question 32

know what Yankauer, Poole, Adson, Frasier suction tips look like

Answer 32

(slide 42)

Question 33

to avoid instrument corrosion:

Answer 33

- open any hinged instruments before cleaning - rinse immediately after use - no distilled or tap water - NO SALINE (causes pitting) - hand scrub soil - use instrument washer

Question 34

properties of instrument milk

Answer 34

H2O based antimicrobial lubricant