10 - Canine OHE & Orchiectomy Flashcards
What is the approach to beginning a canine OHE?
- Ventral midline
- Divide caudal abdomen into 3rds from umbilicus to pubis
- Incision centered on cranial 3rd of caudal abdomen
- 6-8 cm incision (may be larger)
What blade should be used for a canine OHE? What layers do you incise with it?
10; incise skin and into SQ
When do you use Metzenbaums when getting into the abdomen?
Push cut SQ tissue off of body wall
How do you get through the linea alba?
Tent linea up for stab incision, then extend
The linea alba is not always obvious in dogs like in cats. What can you do if this is the case in your patient?
Can feel for where the muscles are joining together and incise at that location
What is the preferred site for rupturing the suspensory ligament?
Craniodorsal attachment to abdominal wall, furthest from important vascular structures
How should you rupture the suspensory ligament?
Lateral to medial direction, close to abdominal wall, use index finger
What do you use to fenestrate the broad ligament and clamp the pedicle?
Rochester-Carmalt
How is the ovarian pedicle ligated and what suture is used?
Use PDS 2-0 or 0, do one Miller’s knot proximally and then one transfixation ligature at more distal forceps
When tearing the broad ligament in dogs, what often has to be done at the same time?
There are often vessels in the broad ligament that are large enough to need ligation.
How is the uterine body ligated?
Use PDS 2-0 or 0;
Miller’s knot most proximal (closer to cervix), transfixation ligature closer to bifurcation
What suture is used to close the linea alba and what pattern?
PDS 2-0 or 0, simple continuous
What suture and pattern is used to close the SQ in a dog OHE?
Monocryl 2-0 or 3-0, simple continuous
What suture and pattern is used to close the skin in a dog OHE?
Monocryl 2-0 or 3-0 (can use same as SQ), intradermal with buried knots
Which suture, PDS or monocryl, loses its strength the fastest?
Monocryl
What is the difference between an open and closed orchiectomy?
Open = tunic incised, structures ligated separately
Closed = tunic not incised, vessels, vas deferens, etc. ligated together
Where is the incision site for a dog neuter?
Between penis and scrotum.
What are the steps to a canine neuter?
- Testicle pushed into pre-scrotal area under median raphe (this protects the urethra)
- Incise down to level of parietal layer of vaginal tunic (may see fat globule on the parietal layer)
- Enlarge incision and push out testicle
- Strip off fascia around cord manually or with gauze (occasionally must transect with scissors)
- Place 3 Rochester carmalts on the cord 0.5 cm apart
- Miller’s knot proximal, transfixing distal, use PDS 2-0 or 3-0
- Move second forceps slightly towards testicle
- Transect cord between 2 remaining forceps and remove testicle
- Hold pedicle with forceps and check hemostasis
- Repeat with other testicle
- 2 layer closure
How many layers are closed in a canine neuter and what are they?
2 - SQ and skin
What suture and pattern is used on the SQ layer for a dog neuter?
Monocryl 2-0 or 3-0, simple continuous
What suture and pattern are used on the skin closure for a dog neuter?
Monocryl (same as SQ), buried intradermal (can use same strand as SQ)