Large Animal Surgery Exam II Flashcards
Leaving as much bone as possible during digit amputation in cattle provides
Soft tissue support
Penile Anesthesia
Pudendal nerve block Dorsal penile nerve block Local infiltration
In choke in cattle if loss of saliva
Metabolic acidosis
Iris adheres to lens
Posterior synechiae
Ligating Dividing stapler (LDS)
Treatment of apical sesamoid fractures
If proximal up to 1/3 arthroscopic removal. Internal fixation if larger
Initial treatment of choke in cattle
Decompress rumen (Red Devil Trocar) Hold off feed and water until resolved
What the what is this?
Power Dehorner
Dehorning method used in younger calves with no sinus opening. Dehorner must fit around horn button. Heat until copper
Thermal (Cautery) dehorning
Treatment for spavin. Destroys cartilage by superheating and vaporizing synovial fluid. Less pain post op. Has less fusion of the distal tarsal joints
Laser facilitated ankylosis
Rear leg local block in cattle. Extend needle straight through extensor tendon to bone and will block.
Deep peroneal nerve
Success rate for forelimb pastern arthrodesis
81%
Superior to wire fixation for midbody sesamoid fracture repair
Screw fixation with arthroscopic guidance
DJD of distal intertarsal (DIT) and tarsometatarsal joints. Predisposes to osteoarthritis
Bone spavin
Argument for older castration
Better growth, claim that Callicrate is humane.
Most common fractures of the proximal sesamoid bones
Apical fractures
End End Anastomosis (EEA)
Lichty Teat Knife
Hypopyon
Inflammatory cells in the anterior chamber of the eye
A small osteophyte proximal dorsolateral MTIII
Grade II Bone Spavin
Esophageal procedure done standing, lateral/ventrolateral approach. 2 layers incision- muscular and mucosa/submucosa. PDS to close bury in lumen.
Cervical esophagotomy with Primary repaie
Surgical treatment for rectal tears. Anesthetized horse in dorsal recumbencyI. Lubricated ring passed and placed with circumferential sutures.
Indwelling liner
When placing internal fixation on splint bone fracture
Do not engage MCIII, will persist lameness. Must remove plate 3-4 months post op if it is engaged
When applying a block to cattle
Make block flush with wall, extend to the heal, and block before blood.
How long can tourniquet be left on for local anesthesia of limb
2 hours.
Initial treatment for rectal tears
Antibiotics, Flunixin, intravenous fluids, reduction of rectal motility, epidural anesthesia, packing of rectum
Fibrous mass between digits due to chronic irritation in cattle. Becomes ulcerated and painful. Males are more common
Interdigital hyperplasia. (Corns)
75% of proximal phalanx fractures are
in the forelimb
Inability to extend penis
Phimosis
Three places to get pulse on horse
Facial artery, transverse facial, and dorsal metatarsal artery (runs between MT and splint)
Prognosis for rumenotomy if FB doesnt penetrate thoracic cavity or involve the right side of reticulum
Good
Newberry knife
Amputation of rear lateral digit
Increases stress on the medial digit. Opposite for the forelimb
Rear leg local block in cattle. Several branches between extensions and skin. 1-inch SC block over extensor tendon will block this nerve
Superficial peroneal nerve
Callicrate band
Cattle with traumatic reticulopericarditis usually die of
Constrictive pericarditis
Diagnostic tool that is sensitive but non specific. Details cortical bone disease and stress fractures
Nuclear Scintigraphy
Causes of preputial orfice ulcer
Hair clipped to short Urine accumulates Urease producing organism produce ammonia Ulceration, secondary infection
Surgical repair for rectal tear. Fresh, clean lesion close to anus. Epidural used. Stay sutures in the anus. Suture with TA90 or blindly
Direct suture repair
What technique is this for pastern arthrodesis
Diverging double plate technique
Grade IIIb rectal tear involves
Mesorectum and retroperitoneal tissue
Causes mild to severe lameness in cattle.
Toe lesions
Causes of splint bone fractures
Hyperextension of fetlock (closed) and external trauma (open)
Treatment of deep digital sepsis in cattle
Drill away area or remove digit above P3. Can use abaxial approach as well.
Bone spavin is common in
Western performance horses
Inability to retract penis
Paraphimosis
Conformation with bone spavin
Sickle hocked
Causes of bone spavin
Chronic repetitive compression, torsion, or shear strains
Treatment for bone spavin. Drill out using drill bit or laser. Or use 70% ethanol.
Ankylosis of TMT and DIT joints
Digit amputation in cattle can be used to treat
Injury or sepsis distal to P1
Provides tensile strength for closure of esophageal surgery
Mucosa/submucosa
Most rectal tears are located
Dorsally and longitudinally, 5-55 cm from anus.
Common cause of hind limb lameness
Bone spavin
Treatment for Grade I and II rectal tears
Antibiotics and Flunixin sufficient for Grade I Soften feces
A large osteophyte proximal dorsolateral MT III bone
Grade IV Bone Spavin
Anesthesia in dehorning
2% Lidocaine- reduces stress associated Flunixin Meglumine Meloxicam- Once, meat withholding time
Grade IV rectal tears involves
All layers into abdomen, may be associated with prolapse of small colon or small intestine throughout defect
What is this. Used to hook rumen and allows exteriorization of rumen for incision during rumenotomy
Rumen Board
Prognosis for rumenotomy if FB penetrates diaphragm
Poor
Differential diagnosis for right sided heart failure in cattle
Traumatic reticulopericarditis Endocarditis Lymphosarcoma Mediastinal mass
Surgical treatment for rectal prolapse. Reduced risk of stricture incision. Preserves inner mucosa and submucosa. Creates plane toward caudal aspect of prolapse.
Stair Step Amputation
When performing surgery on trachea in cattle
Oval skin incision. Sharp excision of circoid and 3 rings.
V
Sagittal (Axial)
Cause of fracture to the first phalanx
Torsion with axial weightbearing
Type IV rectal prolapse
Rectum/colon intussusception through anus
Hugs teat tumor extractor
Treatment for sandcrack in cattle
Debridement of the crack. Wire pulling crack together
Treatment for arytenoid chondritis in cattle
Medical management, sodium iodide
Artificial insemination bulls. Typically occurs after return from Lay off period. Possibly related to atrophy of lamina interna of prepuce
Preputial Avulsion (Penile Laceration)
Sinusitis treatment cattle
Open drainage and lavage. Trephine holes in sinus. Lavage with large volumes
Gastro intestinal anastamosis (GIA)
When placing screws for P1 fracture repair
Most proximal screw within 5 mm of sagittal groove to align the articular surface
When to disbud buck kids
3-5 days
How to extend penis in adult bulls
Sedation: Xylazine, Acepromazine Pudendal Nerve Block
Congenital or acquired in cattle. Poison hemlock and Nicotiana spp. Can cause. Results in regurgitation of milk.
Cleft Palate