Equine Uterine and ovarian surgery Flashcards
Ovariectomy indications
ovarian disease
behavior
genetic
uterine malformation
REBA
7 yo pony mare with stallion like behavior for 6 months, have not observed in heat
repro exam: left ovary >10 cm diameter, right ovary very small
U/s left ovary cystic appearance
DDx for large ovary? DDx for small ovary
Large ovary: hematoma, abscess, neoplasia, cyst
small ovary: anestrus, functional tumor on other ovary
REBA
7 yo pony mare with stallion like behavior for 6 months, have not observed in heat
repro exam: left ovary >10 cm diameter, right ovary very small
U/s left ovary cystic appearance
CBC/chem: WNL
Progesterone: low
Testosterone: high
inhibin: high
What does REBA have
Granulosa cell tumor
secretes inhibin>testosterone>estrogen
other ovary nonfunctional
rarely malignant
REBA
7 yo pony mare with stallion like behavior for 6 months, have not observed in heat
repro exam: left ovary >10 cm diameter, right ovary very small
U/s left ovary cystic appearance
CBC/chem: WNL
Progesterone: low
Testosterone: high
inhibin: high
She has granulosa cell tumor
What are the surgical options?
Colpotomy
laparoscopic removal
flank incision
ventral celiotomy
Surgical choice for : Best client’s best horse for granulosa cell tumor
laparoscopic
less hemorrhage
surgical choice for: a backyard “rescued” mare (low dollar value) that gets an attitude with each heat cycle
colpotomy
cheap
Colpotomy
remove fecal ball or end of uterus-hold off feed
vaginal incision left open-keep cross tied
ovarian pedicle crushed-incomplete crush can lead to hemorrhage
risk of peritonitis, abscesses
colic postop-prevent with mineral oil prepop
Flank laparotomy
standing
may be able to reach ovaries from one side
best for smaller ovaries
crush pedicle or use stapler
Complications of flank laparotomy
hemorrhage-keep quiet for 2-3 days
incisional problems-edema, dehiscence
peritonitis
colic-prevent with mineral oil
Ventral laparotomy
oblique paramedian
direct visualization of pedicle
complications of ventral laparotomy
hemorrhage-esp with tumors
peritonitis, incisional infection
incisional hernia-stall rest 4-6 weeks
colic-prevent with mineral oil
laparoscopy
standing
hemorrhage is controlled-coagulation
may need bilateral approaches
small incisions
preferred technique
complications of laparoscopy
colic-gas insufflation
incisional problems-related to size of ovary
Ramona
8 yo QH mare
8 mo gestation
colic signs: intermittent, moderate
vaginal exam: normal, cervix closed
rectal exam: band running over top of uterus from left to right, band running on right ventrally, foal seems to be further forward than normal, impaction of small colon and twisted to the right
What’s going on?
uterine torsion
typical presentation
8-9 mo gestation
normal vaginal exam
clockwise torsion
DDx colic
Tx options for uterine torsion
detorse using fetus
roll
sx: flank, ventral midline