Teat & MG SX Flashcards
2 parts of udder
- papillary
- glandular
gland cistern (sinus) or lactiferous sinus
pars glandularis
teat cistern
pars papillaris
teat canal or streak canal
ductus papillaris
annular ring
cisternal ringfold
for sx in ___________ recumbency, sedation may be an option
lateral
xylazine dose for cattle
0.02-0.5 mg/kg
withdrawal period for milk and meat w/ Rompum IM
- milk - 24 hr
- meat - 6 d
detomidine cattle dose
10-40 ug/kg (safe in late gestation)
medesedan IV, IM milkd withdrawal period
- milk - 12 hr
- meat - 2 days
T/F: in local anesth technique, avoid drugs w/ adrenaline/E
T - coz of high incidence of tissue sloughing and necrosis (ring blocks, IVRA)
Ex of NSAIDs
flunixin, ketoprofen, meloxicam, carprofen, tolfenamic acid
primary technique when mucosa is already affected
teat sinus infusion
teat sinus infusion indi
- teat polyps removal
- sphincters sx
- local anesth (10-20 mL)
- slow and full thickness
ring block
- instilling small amounts of local anesth 0.5-1 cm apart
- full thickness line block
inverted c block
- local anesth (5-7 mL)
- tourniquet is required
IVRA
it has risk of edema and hemorrhages
line block
dipping or splashing of local anesth
topical application (20 min contact time)
analgesia of the cranial udder and teats for standing sx
paravertebral anesth
anesth of caudal abdominal wall up to umbilicus causing temporary dysfunction of HL
lumbosacral epidural
pre-op considerations and procedures
- mastitis control
- antibiotic admin (parenteral and intramammary)
- analgesia
- culture and sensitivity testing
- examine teats
T/F: teat canal obstruction is emergency
T - treated ASAP
T/F: teat canal obstruction and lacerations are emergency
T - treated ASAP
2 types of teat laceration
- perforating
- non-perforating
T/F: teat lacerations are emergency
T - can use hydrotherapy, ice therapy, lavage to help
T/F: perforating lacerations have a better prognosis
F - poor (if left for more than 4 hr; extremely poor after 12 hr)
laceration that uses teat bandage application
non-perforating
in non-perforating laceration, what suture pattern:
1. mucosal layer & submucosal layer = ___________
2. skin = ____________
- continuous (4-5 polyglac; round)
- SI or horizontal mattress (2-3 prolene; cutting)
sutures necessary to remove dead space
walking sutures
suture pattern where skin and muscular layers are sutured using vertical mattress sutures w/c do not perforate the mucosa
mattress technique
T/F: in high-lactating cows, a self-retaining plastic teat cannula w/ cover is placed to prevent antibiotics flowing out w/ milk
T
T/F: repair of teat fistula is performed before drying off perforated teat wound
F - after
in teat fistula repair, a __________ block is performed, and a milk cannula is placed thru the ___________ into the sinus, an ________ incision is made around fistula
- ring
- streak canal
- elliptical
_________ intention healing on 10th post-op day, after all sutures have been removed
primary
after dissection, vertical mattress and SI sutures are placed on fresh wounds to ____________
appose
in gen post-op management of lacerations, antibiotics is continued for _________
2 d
T/F: streak canal does not close immediately after cannula is removed
T
teat obstruction due to congenital defect or chronic inflam
basal abnormalities (poor prognosis)
in basal abnormalities, use _______ teat probe and spiral to clear obstruction to break the annular membrane
Hudson’s
teat obstruction due to chronic inflam, milk calculi (teat peas), neoplasia (bovine papillomatosis), congenital obstruction
mid teat abnorm (use teat dilator or papillotome and forceps)
teat obstruction due to fibrosis and stenosis of teat canal from chronic inflam
apical abnorm (use teat knife)
(1) due to trauma to teat end that leads to (2)_______
- tight teat sphincter
- mastitis
absence of teat orifice
atresia
due to scar tissue formation, secondary to hematoma
teat spider or teat lumen granuloma (use alligator forceps or teat curette
teat amputation pre-op
drain milk + intramammary antibacterial therapy
teat ampu anesth
local or lumbosacral epidural
teat is amputated by _______ of age
3 months of age
T/F: teat amputation can cause interference in milking and increases risk of mastitis
T
MG ampu indi
severe life-threatening mastitis (common in sheep and goats)
MG ampu anesth
epidural analgesia or gen
MG ampu position
dorsal or dorso-lateral recum
in MG ampu, dissect the glandular tissue along w/ ________ liga and __________ liga
suspensory (medially) and lateral (laterally)
most impt. vessel that enters the udder on the craniolateral aspect after passing thru the inguinal canal
large external pudendal a.
