Exam 1 Flashcards

(44 cards)

1
Q

Drugs For Pain Relief in Ruminants

A
  • Lidocaine only thing approved for intraop (All others are ELDU)
  • Banamine is used for foot rot but can be used post op ELDU
  • Use FARAD
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2
Q

Preparing Ruminant Surgical Site

A
  • Clip hair (don’t shave)
  • Tie tail

Rough
o Remove dirt and debris
o Mild soap & brush

Sterile
o Chlorhex or povidine
o Contact time important

Draping
o Use water impermeable

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3
Q

Post-op Feeding of Ruminants

A
  • Usually on 60:40 roughage to grain
  • Post-op give full roughage and slow intro to grain
  • Return neonates to regular feed (milk) & monitor weight
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4
Q

Fluids for Ruminants

A
  • Adults: 60ml/kg/day
  • Neonates: 90 ml/kg/d
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5
Q

Disbudding Goats; When, Nerve Supply, Issues

A

o Look for two twists of hair
o Bucks at 3d
o Does at 5-7d
o Tetanus prophylaxis

Nerve Supply
* Corneal nerve beneath temporal line
* Infratrochlear nerve above rim of orbit
* Block 4 nerves w/ 1ml lidocaine
* Careful w/ lidocaine in small goats

Issues
* No frontal sinus to protect brain
* Burns
* Hemorrhage from not stopping bleeders
* Don’t give too much xylazine

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6
Q

Disbudding Cows; When, procedure

A

o Before 3 wks
o Give 3 tabs meloxicam
o 4-6ml lidocaine in each corneal nerve
o don’t keep dehorner on longer than 10secs
o if done in adults -> frontal sinus exposed

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7
Q

Docking Sheep; Purpose, When, Issues

A

o Eliminate manure buildup & fly strike
o w/in first 48hrs of life (to a few days)

Issues
* Too short -> prolapse

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8
Q

Castration; Precautions, Analgesia options

A

o Use tetanus antitoxin
o testicular block
o ring block

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9
Q

Repair Nose Ring Tear

A

o Older than 6hrs? -> treat as second intension
o Sedate w/ xylazine & acepromazine
o Infuse nose or bilateral infraorbital nerve block w/ lidocaine
o Place 2-3 horizontal mattress sutures
o Place simple interrupted between mattress as needed
o Never remove sutures

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10
Q

Sinusitis; Treatment

A
  • Lavage w/ “weak tea” diluted betadine
  • Trephination?
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11
Q

How to: Trephination

A
  • Goal is to establish drainage
  • Clip and prep w/ Betadine/povidine
  • Local infusion of lidocaine
  • Small (~2cm) circular incision thru skin down to bone
  • Galt trephine thru bone into sinus
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12
Q

Llama Lullaby

A

o 10ml ketamine
o 1ml xylazine
o 1ml butorphanol

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13
Q

Mandibular Tooth Root Abcsess; Diagnosis, Treatment; Surgical Approaches

A

Diagnosis
* Oral exam
* imaging
* Check PCV pre-surgery

Treatment
* Ceftiofur or florenicol for 4-6wks
* Meloxicam or Banamine for 1-2wks

Surgical Approach
* Performed under general anasthesia
* Ventrolateral buccal approach (recommended)
* Retropulsion of tooth (Not in mandibular cheek teeth)
* Oral extraction (Only for extremely loose teeth)
* Post-op, Flush incision with warm water/dilute betadine until no longer communicating with mouth/hole closes & give antibiotics 1-2 weeks

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14
Q

Squamous Cell Carcinoma; Locations, Diagnosis, Treatment

A

Locations
* 3rd eyelid
* limbus
* lower lid
* conjunctiva

Diagnosis
* Ocular exam
* Fluorescein stain
* Manual palpation of orbit

Treatment
* Cryosurgery
* 3rd eyelid removal
* enucleation (if invading eye)

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15
Q

How to: 3rd Eyelid Removal

A
  • Auriculopalpebral block, topical on cornea & 3rd, or lidocaine injected into 3rd
  • Light sedation
  • Place hemostats on dorsal & ventral edge of 3rd eyelid
  • Sharp dissection w/ scalpel
  • Leave hemostats in place for 2-3mins
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16
Q

How to: Enucleation

A
  • Ring block
  • Retrobulbar infusion
  • 3(4) point block OR Petersen block (technically challenging)
  • Suture or clamp eyelids shut ->
  • Use scalpel to make elliptical incision ->
  • Dissect tissue out w/o entering eyeball
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17
Q

Corneal Ulcer; Causes, Treatment

A

Cause
* Pink eye
* Trauma
* entropion
* Other bacteria

Treatment
* Medical management
* 3rd eyelid flap
* enucleation
* entropion repair

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18
Q

How to: Emergency Tracheotomy

A

o Junction of cranial and middle third of neck
o Head restrained vertically
o Line block with lidocaine
o Sternohyoideus and sternothyroideus muscles split on midline
o Incise between tracheal ring
o Use of stylet to introduce largest tube that will fit
o Cuffed tubes are NOT inflated
o Changed / cleaned 2-3 times daily
o Antibiotics & NSAIDs

19
Q

Left Displaced Abomasum; Basics, Clinical Signs, Diagnosis, Treatment

A

o Goes under rumen and stays between rumen and left body wall
o No severe occlusion or vascular compromise
o Not an emergency

Clinical Signs
* Sunken eyes & elevated ribs on L
* Ketotic, hypocalcemic, hypochloremic
* Dry feces maybe

Diagnosis
* Ping
* Tube test
* Endoscopy, ultrasound, or exploratory sx

Treatment
* Toggle
* Right paralumbar omentopexy/pyloropexy
* Left paralumbar abomasopexy
* Paramedian abomasopexy

20
Q

R Abomasal Volvulus; Clnical Signs, Diagnosis, Treatment

A

Clinical Signs
* Increased HR & RR
* Sunken eyes
* Maybe down

Diagnosis
* Ping
* Tube test
* Endoscopy, ultrasound, or exploratory sx

Treatment
* Right paralumbar omentopexy/pyloropexy
* Paramedian abomasopexy

21
Q

Pros & Cons of a Toggle

A

Pros
* Cheap
* Easy
* Good prognosis/rapid return to normal
* Pexy abomasum @ anatomical location

Cons
* Need multiple people
* Potentially toggle wrong organ
* Roll complications
* Can’t use on RDA, RAV, heavy or pregnant cows

22
Q

Pros & Cons of R Side Approach Surgery for Displaced Abomasum

A

Pros
* Good prognosis/rapid return to normal
* Can do alone
* Can perform prophylaxis pexy
* Good for LDA, RDA, RAV

Cons
* LDA harder to reach
* Difficult to break adhesions on L
* Not goof for heavy/[regnant cows w/ LDA
* Pexy not at anatomical location

23
Q

Pros & Cons of L Side Approach Surgery for Displaced Abomasum

A

Pros
* Good prognosis
* Rapid return to normal
* Pexy at anatomical position
* Good for heavy pregnant cow with LDA

Cons
* Only for LDA
* Cannot do anything if no DA
* Difficult to pull needle

* Size difficulties

24
Q

Pros & Cons of Paramedian Approach for Displaced Abomasum

A

Pros
* Good prognosis
* Rapid return to normal

* Can be used for LDA, RDA or RAV

* Pexy at anatomical position

Cons
* Have to put cow on dorsal and keep the cow there

25
How to: Toggle
o Administer oral fluids 
-> o Be aware of milk veins on the abdomen. 
-> o Cast cow onto right side and roll cow onto her back. 
-> o Rock the cow & push knee into side of abdomen to allow abomasum to ‘float’ up to anatomical location -> o Determine location of abomasum by pinging. 
-> o Place two toggle sutures to pexy abomasum to ventral wall. 
-> o Let air out and use something to break pressure of suture on skin. 
-> o Roll the cow onto left side and let cow up
26
How To: R Approach for LDA
o Flunixin meglumine IV 
-> o Make incision on right paralumbar fossa. 
-> o Determine if there is LDA. 
-> o Deflate LDA using needle and tube as much as possible. 
-> o Return abomasum to anatomical location 
 o Grab greater omentum and pull pylorus to incision. 
-> o Find the sow’s ear. 
-> o Pexy pylorus (partial thickness) to body wall 
(full body wall thickness) as low as possible. 
-> o Close first layer with omentum. 
-> o Close rest of layers and skin
27
Choices for Flank Anesthesia
o Proximal paravertebral block 
 o Distal paravertebral block 
 o Inverted L block 
 o Line block 

28
C-section; Reasons, Pain Management, Approaches, Post-op care
Reasons * Muscular hypertrophy * Prolonged gestation * Inappropriate crossbreeding or premature breeding of heifers * Cow- narrow birth canal (relatively oversized calf) * An irreducible uterine torsion
 * An incomplete cervical dilatation Pain Management * Epidural 6 ml 2% Lidocaine * IV flunixin meglumine * Distal paravertebral +line block behind the last rib Approaches * Standing paralumbar * Recumbent ventral midline * Ventorlateral * Standing L oblique Post-op care * Systemic & intra abdominal antibiotics * IV fluids * Oral fluids * Meloxicam
29
How to: C-section
o Incise -> o The uterus may be manipulated up to the incision and exteriorized. -> o Incise into the uterine horn using an envelope opener -> o Expose one or two legs of calf and place chains -> o Gently pull the calf
-> o Extend the incision as needed -> o Check calf is doing well once on ground -> o First layer- simple continuous-#2 catgut -> o Second layer-inverting pattern without penetration of the wall (Modified Cushing suture pattern)
30
Umbilical Stump Evaluation & Diagnostics
Umbilical stump evaluation o Reducible, heat, painful, red skin? o Leaking urine = most likely patent urachus o Fever, off feed, signs of colic, straining to urinate Diagnostics * Ultrasound to look for loops of bowel (hernia) * OR hyperechoic debris (abscess)
31
Hernia Repair, How to Belly Band, Post-op care
Hernia Repair * 1 to 3 cm (1 finger) manual stimulation belly band * 4 to 5 cm (2 finger) belly band, irritant injection, surgery * > 5 cm (3 finger) surgical Belly Band * Wrap brown gauze, vet wrap, or elastikon around waist * Check every 10 days Post-op Care * Confine 10-14 days * Antibiotics if field surgery or open abdomen * Flunixin or meloxicam * Belly band if severe
32
Scrotal/Inguinal Hernias Direct Vs Indirect
Direct * through facia of abdominal wall Indirect * through inguinal ring, within vaginal tunic
33
Scrotal/Inguinal Hernias Treatment
Taping Method * 1” Elastikon “Figure 8” around legs after castration * Puts pressure on inguinal rings * Remove tape in 4-5 days Surgery * Performed prior to castration * Incision over external inguinal ring -> * Blunt dissection down to testis and spermatic cord -> * Visualize intestines in vaginal tunic -> * Twist spermatic cord and milk intestines back into abdomen -> * Transfixation ligature around spermatic cord -> * Close inguinal ring
34
Rectal Prolapse; Cause, Treatment, Repair for "Short tail" prolapse, When to amputate & anestamose
o Caused by straining due to many underlying causes Treatment * Caudal epidural then -> * Replace & purse string (cattle) OR * Peri-rectal counterirritant & purse string (small Rs & camelids) OR * (Sub)mucosal Resection & purse string (only if needed) OR * amputation (avoid!) * maintain soft feces w/ MgOH or mineral oil * flunixin * remove purse string in 5-10d Short Tail Rectal Prolapse Repair o Ram – 1 ml oxytetracycline injected around rectum at 12, 3, 6, 9 o’clock o Ewe – 12, 3, 9 o’clock Rectal prolapse amputation & anastomosis o Prolapse out for too long, unable to replace, or damaged tissue
35
Which Claws of a Cow Bear the most Weight Bearing
Front * Most * Medial claw most Hind * Less than front * Lateral claw most
36
Deep Digital Sepsis Surgical Options
Amputation * Cheaper * Short recovery time * Shorter lifespan * Moderate skill Arthrodesis * Expensive * Recovery 2-3mo * Drainage dependent on aftercare * High technical skill needed
37
How to: Claw Amputation; Post-op Concerns
o Clip & scrub o Bier block o Disarticulate between PI & PII OR o Cut through with wire at distal PI or proximal PII o Place wooden block on other foot to keep from weight bearing Post-op Concerns * Septic tendon sheath * Poor granulation tissue * Breakdown of other claw
38
How to: Arthrodesis; Post-op Concerns
o Clip/scrub o Bier block o Drill through distal navicular/coffin joint o Currette out dead bone o Flush & pack (every 2-3 days) o +/- cast Post-op Concerns * Persistent sepsis * Pain * Wound management * Eventual immobilization of coffin joint
39
Interdigital Hyperplasia (Corn) Removal
o Clip, scrub, block o Hemostasis VERY important
40
General Post-op Management
Pain * Flunixin IV Q12 * Meloxicam PO Q24 * Gabapentin PO 8-12 Antibiotics * Nuflor – good bone penetration * Excede – labeled for foot rot * Oxytetracycline - labeled for foot rot
41
Urolithiasis; Signalment, Clinical Signs, Diagnosis
Signalment o Male, castrated o High grain diet o High alfalfa diet Clinical Signs o General o Straining o Vocalization Diagnosis o imaging
42
Urolithiasis; Treatment
Clip urethral process o avoid sx Tube cystostomy * gold standard * Fully removes stones & don’t damage anatomy Percutaneous Tube cystostomy * cheaper, high risk/less reward * Trochar into body wall & bladder Perineal Urethrostomy * permanent, high risk/reward o Bladder marsupalization (last resort) o Vescicular Preputial Anastamosis (last resort) o Permanent Tube Cystostomy (last resort)
43
Mastectomy in Small Ruminants; Reasons, Vessels to be aware of
Reasons * Mastitis * Neoplasia/hyperplasia * CAE * Precocious Udder (hormone related) Vessels * Pudendal * Caudal mammary
44
Mastectomy in Small Ruminants; Radical Vs Physiologic
Radical * More expensive * Time consuming * Constant hemostasis * No more udder * Completely scoop out mammaries * 4 leaf clover closure w/ drains Physiologic * Cheaper * Quick * Less traumatic * find vessels & put zip ties around them -> 6-8wks tissue atrophy