Flashcards in Castration/Epididymectomy/Cryto Deck (43)
What is the indication for castration in horses?
Behavior change (1-1 1/2 years)
What are indications for castration of farm animals
Increased growth rate
Better meat flavor (boars)
When do we want to castrate farm animals
No meat taint
What are complications fo emasculation with the Brudizzo emasculator?
Clamping of penis
What type of emasculator has a clamp with a second handle for cutting ?
For castration, how do you make your incision into the scrotum?
Cut the distal 1/3rd of scrotum (should be done in less than 3 cuts)
Doing a closed castration, prior to ligation the spermatic cord, what do you do to visualize the cord and this will also allow for more secure ligatures?
Use gauze to strip connective tissue toward the inguinal ring
After lighting the spermatic cord in closed castration, you place the emasculator ________cm from the ligature and clamp it for ____mins
Remember to always place “nut to nut”
T/F: When doing an open castration you incise through both the parietal and vaginal tunic
What structures can you visualize in the spermatic cord when doing an open castrations?
Plexus pampiniformis with testicular artery
T/F: you should always do a double ligation for castrations to ensure ligature security
Double ligation increase risk of infection
What is the purpose of vasectomy/epididymectomy?
Allows detection of females in estrus to be bred by males or greater genetic material
Makes the males infertile and prevents ventricle diseases
What is a vasectomy?
Removal of ductus deferens for male infertility
How do you preform a vasectomy?
Local line block with lidocaine
Incision made on neck of scrotum lateral to median raphe
Isolation of vas deferens and spermatic vessels
Blunt dissect spermatic chord and incise tunic
Direct vas deferens from veins and arteries
Ligate vas deferens at a distal and proximal location and remove tissue
Always submit tissue for histopath to confirm correct removal
What is an epididymectomy?
Removal of the tail of the epididymis
What is the procedure of an epididymectomy?
Incision over the epididymis into the parietal tunic
Vaginal tunic left intact
Blunt dissect testicular liagment
Ligation of the ductus deferens and body of the epididymis
Cut and check for hemorrhage
How is a penis/prepuce deviation done?
Incision into skin around preputial orfice and then down midline to the base of the penis.
A skin incision is make laterally and sponge forceps are used to make a sub cuteanous tunnel
A sterile sleeve is placed through the new opening and SQ tunnel ad the penis is directed through this and pulled through the new opening
Prepuce is sutured into the new location and the ventral midline Incision in closed
What procedure can be done to help prevent urolithiasis in sheep?
Removal of the urethral process
What structures make up the inguinal canal?
Internal ring : vaginal ring (rectus sheath, border of internal abdominal oblique, and inguinal ligament)
External : slit in external abdominal oblique M
At birth the testis of a foal are located ?
In inguinal canal
Descend into scrotum at 1-2weeks
What muscle is responsible for pulling the retroperitoneally located testes into the scrotum?
What do you call an anomaly of testicular position?
What are the types of cryptorchidism?
Incomplete abdominal (partially in inguinal ring)
T/F: right sided cryptorchidism is more common than left sided
What are etiologies of cryptorchidism?
Improper fxn of gubernaculum
Inguinal ring too small
Hormone imbalance (estrogen shortage)
What clinical signs can indicate cryptorchidism? And how can you diagnose?
Stallion like behaviour
Palpation (external —rectal)
Ultrasound (external —rectal)
How is a hormonal assay done to assess for cryptorchidism?
Collect blood (base line testosterone )
Inject 10,000 units of hCG (increases synthesis of testosterone)
Collect 2 hours and then 1-2days later
Gelding < 40pg/mL
Treatment for cryptorchidism?
May take up to 1 yr for testis to descend (w/o treatment)
1000IU hCG per 100 Pd 2x weed for 4 weeks
—> standing (laparoscopic)
—> GA dorsal recumbency (most common)
What approaches can you use when doing a crytorchidectomy under GA?
Flank (lat recumbency)