L10: LA Basic Gastro Sx (Freeman) Flashcards Preview

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Flashcards in L10: LA Basic Gastro Sx (Freeman) Deck (26):
1

#1 and 2 cause of death in horses

1: old age
2: colic

2

nonischemic intestinal lesions

-intraluminal obstructions and displacements
-assoc. with very high survival rate
-ie. enterolith, food material

3

ischemic instestinal lesions

-strangulating lesions, infarction
-sx needed promptly

4

what can't be exteriorized in exploratory celiotomy?

beginning and end of large colon, stomach, and transverse colon, part of ileum

5

enteroliths

-usually in R dorsal colon
-often form around initis (FB)

6

Right Dorsal displacement of the colon (RDDC)

-Colon rotates laterally on its long axis around the cecum, to become positioned to the right of the cecum between the cecum and body wall
-causes obstruction w/ ischemia, pain

7

Nephrosplenic Ligament Entrapment =

left dorsal displacement of colon

8

Dx of NSLE/LDDC

CS,Hx, rectal palpation, U/S

9

Tx of NSLE/LDDX

-IV phenylephrine infusion and mild exercise over 15 mins
-rolling
-sx
-prevention: closure of nephrosplenic space

10

Large Colon Volvulus

RVC usually rotates clockwise over RDC if standing behind horse
-results in ischemia
-most common in postpartum mare
-severe pain
-distended abd

11

about 60% of horses with epiploic foramen entrapment have history of:

cribbing

12

Inguinal hernia in what breeds?***

Standardbreds
Tennessee Walkers
Saddlebred
-prevent with closed castration
-congenital prob. in foals
-emergency in adults; painful, swollen

13

tapeworms may play role in:

intussusception

14

how much of SI can be resected?

60-70%

15

ligate divide stapler

for anastomoses (?)

16

layers of intestine wall

Mucosa (villi, crypts, muscle layer)
Submucosa
Seromuscular layer (circular and longitudinal muscle serosa)

17

suture patterns for intestinal anastomoses

lembert and cushing. Both are inverting patterns, but don't want to invert too much or can cause narrowing of lumen!

18

jejunocecostomy

-connects jejunum to cecum
-re-establishes the continuity of the gastrointestinal tract after ileal resection

19

Parker-Kerr suture pattern

one used to close the stump of a hollow viscus, e.g. in intestinal anastomosis. A Cushing suture pattern is put in first over the top of the bowel clamp which is then gradually withdrawn and the suture pulled tight. A layer of Lembert pattern is then used to oversew the first row.

20

use what forceps for enterotomy closure?

Babcock forceps

21

how much of large colon can be resected?

80%

22

colopexy

-for horses prone to recurrent displacements
-attaches band of ventral colon to body wall

23

omentum in LA ventral midline closure?

NO (LA more prone to adhesion, and omentum doesn't hold suture well)

24

use what to get good tension on suture?

sliding half hitch

25

aftercare

-IV fluids, abx (penicillin, gentamicin)
-flunixin meglumine (NSAID)
-pass stomach tube if indicated (relieves SI reflux)
-water at 12hrs
-small hay at 18-24hrs, then at 4hr intervals
-ICU checks
-repeated and increased to full feed by 72-96hrs

26

what percent success for strangulating and non-strangulating lesions in general?

non-strangulating: 90%
strangulating: 80%