NTCA - Rodents Flashcards
1
Q
Premed anaesthesia
A
- Butorphanol, SC/IM/IP
- Buprenorphine, SC/IM/IP
- Midazolam + Ketamine combo
2
Q
Induction
A
- Ketamine, IM/IP
- Isoflurane (chamber)
3
Q
Maintenance anaesthesia
A
Isoflurane
4
Q
Analgesia
A
- Meloxicam, SC/PO
- Buprenorphine, SC
5
Q
Neutering - guinea pig
A
- Flank ovariectomy - ventral recum tolerated well, quick, wounds on non-dependent surface
- Routine spay unusual - to manage cystic ovarian disease, contraceptive problems
6
Q
Cystic ovaries (guinea pig)
A
- Hormonal implants (medical Tx) - pot causative factor for leiomyoma in already high risk case
- Percutaneous drainage - risk of iatrogenic peritonitis, doesn’t address causative factors, high recurrence
- Ovariectomy - easier in cystic cases, hysterectomy necessary if endometrial changes - large cysts may require drainage first
7
Q
Ovariectomy (guinea pig)
A
- Bilateral dorsal flank incisions - caudal to last rib + ventral to transverse processes
- Traction to exteriorise mobile ovary, large cysts may require drainage first
- Ligate ovarian pedicle cranially + uterine horn caudally
- Use haemoclips/hand ligatures
- Ovary removed by sharp excision + repeat for other side w/ second incision
- Close muscle w/ cruciates (absorbable suture - vicryl)
- Close subcuticular fat w/ crucites (monocryl)
- Close skin w/ intradermals (monocryl) or w/ glue
8
Q
Absorbable suture muscle closure (guinea pig)
A
- Monocryl (poliglecaprone) - absorbable monfilament
(Vicryl (polyglactin) occasional reactions seen in guinea pigs) - Cruciates
9
Q
Subcuticular fat suture closure (guinea pig)
A
- Monocryl
10
Q
Skin suture closure (guinea pig)
A
- Monocryl
- Glue
11
Q
Castration (guinea pig)
A
- Abdo preferred - single incision in front of penis
(Avoid scrotum to minimise post-op infection) - Incise skin (single incision 1 - 1.5 cm between umbilicus + penis), fat + linea alba separately
- Midline bladder can be deflected to access inguinal region
- Pressure applied to scrotum + fat pad can be visualised moving into abdomen
- Gasp fat pad + exteriorise + attached testis
- Break down gubernaculum + ligate spermatic cord
- Repeat for other testis
- Close linea alba, fat + skin separately w/ intradermals - monocryl
12
Q
Spay (rat)
A
- Flank/midline spay - routine to dec risk of mammary masses
13
Q
Castration (rat)
A
- Single scrotal tip incision
- Ligate spermatic cord
- Glue skin
14
Q
Spay (mice, hamsters, gerbils)
A
- Midline abdominal spay - haemoclips helpful, exteriorisation of ovary for ligation tricky
- Ovarian cysts + neoplasia common in gerbils (same approach to Sx, can be drained to aid exteriorising ovaries)
15
Q
Castration (mice, hamsters, gerbils)
A
- Lateral incisions to scrotum
- Ligate spermatic cord
- Close tunic
- Glue skin