Farm Animal

Question 1

Describe Blind Toggle Pin Abomasopexy in left displaced abomasum correction

Answer 1

Only used in USA

Cast onto back and insert two toggles via a cannula pushed through ventral body wall

Test fluid with pH strip to confirm siting

Question 2

Describe right flank ometopexy in correcting left displaced abomasum

Answer 2

Enter right flank through 15cm incision one hands breadth behind last rib

Locate abomasum by passing left hand toward pelvis

Deflate by pressing over organ ventrally and caudally

Reposition by sliding arm under rumen and lift it while pushing palm downward bringing organ towards body

Locate omental fat and trace cranially and ventrally and continue to locate knobbly pylorus

Suture fat adjacent to this into abdominal wall using cat gut

Lock fat in using mattress suture through musculature and through fat

Close transversalis and peritoneum with continuous suture

Close oblique muscles and then close skin

Question 3

Describe a left flank omentopexy in correcting left displaced abomasum

Answer 3

Enter left flank through 15cm incision caudal to last rib

Pass a long nylon suture through fat several times leaving two, one metre long ends

Pass through ventral body wall 10cm apart

Tighten the sutures and tie externally with 10 throws on the knot

Cut suture flush with skin after 3 weeks

Question 4

Describe right paramedian abomaspexy in correcting left displaced abomasum

Answer 4

Sedate cow and cast onto back

Incise to right of the midline and locate abomasum, reposition and suture to wall

Question 5

Describe the post operative care after LDA corrections

Answer 5

Don’t put back onto full concentrate rations

Fill rumen with hay or silage for at least 4 days then slowly introduce the concentrate

Question 6

Describe the process of correcting a right displaced abomasum using right flank correction and omentopexy

Answer 6

Right flank laparotomy incision locating abomasum in right abdomen and identify twist

Place a running suture around greater curvature then another around a 2cm area

Insert a stomach tube - drain off fluid and gas before closing

Correct displacement

Volvulus must be corrected first by rotating organ clockwise around a vertical axis then flexion should be corrected

Then locate pylorus and perform an omentopexy

Question 7

What fluid therapy should be provided with a right displaced abomasum?

Answer 7

Isotonic saline - 30l IV via a pump

Continue with oral fluids 20-40l with 100g KCl BID

Question 8

What is the post-op care for right displaced abomasum?

Answer 8

Slower to recover than LDA so keep on silage or hay only for 7 days before introducing concentrate

Question 9

What needs to be administered before surgical treatment of caecal dilatation and volvulus?

Answer 9

IV fluids with Flunixin Meglumnine

Question 10

Describe a right flank laparotomy when correcting caecal dilatation and volvulus

Answer 10

Deliver caecum apex through incision

Pack abdomen and perform typhlotomy (caecal incision) at apex

Empty contents

If devitalised, apply bowel clamps and resect necrotic tissue

Repair with double row of continuous inverting sutures