Urogenital Surgery Flashcards
How large should a kidney be on xray?
Cat 2-2.5x L2
Dog 2.5-3.5x L2
How is a renal lymphoma treated?
chemotherapy
How is unilateral renal neoplasia treated?
Ureteronephrectomy
What are the 2 most common embryological abnormalities of the bladder?
Patent urachus
Vesicourachal diverticulum
What suture material should be used to close the bladder?
Monofilament absorbable i.e. PDS
what are the 3 indications for a tube cystotomy?
Decompression of atonic bladder
Urethral transection
Bladder neck/urethral tumour
How should a bladder rupture be treated?
May heal on own.
If not - debride and suture. Can omentalise.
What proportion of the bladder may be removed surgically?
75%
Where are the 3 places that males are predisposed to urethral Dz?
Neck of bladder - prostate
Pelvic - #s can injure
Penile - limited distension capacity
What are the 4 predisposing factors for urethritis?
Trauma
Catheter
Urolith
Neoplasia
How is a urethral prolapse treated in the male?
Purse string suture.
Can resect tissue.
CASTRATE, sedate, buster collar.
What are the signs of urethral blockage?
Dysuria Anuria Haematuria Dripping urine Abdominal pain Uraemia
Why is IVFT used in urethral obstruction?
Correct acid/base imbalance and electrolyte disturbances
How should a bladder be emptied in a blocked urethra?
Cystocentesis
What surgical procedure is performed if retro-hydropulsion is unsuccessful at removing a urethral calculi?
Urethrotomy
Where is the preferred site of urethrostomy on male neutered animals?
Scrotal
When is a pre-pubic urethrostomy performed?
insufficient urethral length for pelvic urethrostomy
What is the treatment for urethral neoplasia?
Sx unlikely - can resect parts.
Permanent tube cystotomy/stent.
Palliate - poor px.
When can kittens be neutered from? (BSAVA)
4m+
What manouvre can be used on the RHS to locate the ovary?
Duodenal
What manouvre can be used on the LHS to locate the ovary?
Colonic
Which 2 ligatures should be used in the cervix during an OVH?
Transfixing + encircling
Which pattern should be used in the abdo wall following a bitch spay?
Simple continuous
What are your 3 options for skin suture pattern following an OVH?
Intradermal
Interrupted/cruciate mattress
Staples
What are your 2 landmarks for a feline flank spay?
External angle of ilium
Hip
Which analgesia should pets be given after neutering?
Local!
Methadone (premed)
NSAID post
(+paracetamol in dogs)
3-5days!!
What is the strength holding layer of the abdomen?
Fascia of rectus abdominus
Which drug helps 90% of dogs with post-neutering USMI?
Phenylpropanolamine - increases muscle tone
What is the second line treatment for post-neutering USMI?
Ephedrine
3rd: estriol
If medical treatments don’t solve post-op USMI - what are the surgical options? (3)
Colposuspension
Hydraulic urethral occluder
Urethral submucosal collagen injections
Which 2 nerves are responsible for bladder filling and storage?
Pudendal (somatic) and Hypogastric (SYMP)
Which nerve is responsible for bladder emptying?
Pelvic (PARA)
What are the signs of a filling defect in the bladder?
Urinary normally
Dribble urine
Reduced bladder capacity
What may cause bladder filling abnormalities?
Ectopic ureters
Reduced pressure at bladder neck
Involuntary contractions (infection, calculi, neoplasia)
What are the signs of bladder emptying abnormalities?
Distended bladder
No normal urination
Constant urine dribbling
What may cause a bladder emptying abnormality?
Urethral obstruction
Chronic distension
Dyssynergia
What is the most common cause of incontinence in the bitch?
USMI
What are the signs of USMI?
Incontinence when relaxed
Otherwise urinate normally
What is the cause of USMI?
Low urethral tone
Obesity
Hormonal influence possible (speyed befroe 1st season)
How is congenital USMI treated?
1st season resolves it in 50% of cases
If not: Inc muscle tone and reduce contributing factors
Apart from phenylpropanolamine, which drugs can be given to male dogs with USMI?
Oestrogen based drugs
Which breeds of dog are predisposed to ectopic ureters?
Golden Retriever
Lab
Skye terrier
Husky
Where do ectopic ureters commonly empty?
Urethra, vagina or rectum
What is a common 2e condition for ectopic ureters?
UTIs
In a patient with an ectopic ureter you perform an ExLap and find Unilateral ectopia, severe hydronephrosis. Best surgical option?
Ureteronephrectomy
In a patient with an ectopic ureter you perform an ExLap and find extramural ectopia. Best surgical option?
Ureteral transection and re-implantation
In a patient with an ectopic ureter you perform an ExLap and find intramural ectopia. Best surgical option?
Intravesical repair
What is the most common cause of incontinence in the Cat?
Tail pull injury or sacral # (neurogenic)
Can also have juvenile or iatrogenic
How long can a ureteral obstruction exist before the damage it causes is irreversible?
7d
What can be done for a traumatic avulsion of the ureter at the bladder?
re-implantation
What are the 2 CIs for OVH prior to 1st season? (bitch)
Juvenile Vaginitis
Juvenile USMI
What are the 2 major advantages to OVH prior to 1st season?
BVs smaller
Reduced mammary neoplasia
When should an elective OVH take place?
> 12w after oestrus or >6-8w PP (>3w post-weaning)
Which hormone drives cystic endometrial hyperplasia?
Progesterone - growth of glands, reduced action of myometrium, allows bacteria to thrive
What are the signs of pyometra?
V+ PUPD Inappetance Dehydration Palpably enlarged uterus
What are the 3 mainstays of OVH treatment?
IVFT
ABs
OVH
How can you confirm ovarian remnant syndrome?
Stimulation tests
How can vaginal hyperplasia be treated?
WILL regress after follicular phase
In meantime: collar, lubrication and if prolapsed - purse string
Where is a canine episiostomy cut?
12 o clock
What is the major indication for an episioplasty?
Excess skin folds cause peri-vulval dermatitis
What are the 3 possible clinical signs with ovarian neoplasia?
Malignant effusion
Abdo mass symptoms
Hormonal Dysfunction
What investigations can be done for an ovarian tumour/
Palpate! H/BC Rx US Abdominocentesis ExLap
90% of canine uterine tumour are which type of neoplasia?
Leiomyoma
What is the Px for Leiomyomas?
Good if no mets - remove surgically
The majority of feline uterine tumour are which type of neoplasia?
Adenocarcinomas (Px guarded)
What is the most common tumour in the bitch?
Mammary Carcinoma
Which mammary glands are most commonly affected by neoplasia in the bitch?
Caudal mammary glands
Which neoplastic Dz is hard to differentiate from mastitis due to its poor demarcation, ulceration and reddening?
Inflammatory carcinoma - poor Px
What is the difference in malignancy between feline and canine mammary tumours?
Dog: 30-50%
Cat: 90%
Which mammary glands are most commonly affected by neoplasia in the queen?
cranial mammary glands
What are the clinical signs of prostatic Dz?
Urinary (dysuria, blood dripping)
Defaecatory (tenesmus, flat faeces, constipation)
HL pain/stiffness
How is prostatic Dz diagnosed?
Palpation Urinalysis Rx Prostatic massage/biopsy Abdo US
What are the 5 major Ddz of prostatic Dz?
BPH Prostatitis Prostatic Abscessation Prostatic cysts Prostatic Neoplasia
How is BPH treated?
Castration +/- anti-androgens
How does BPH present?
Symmetrically enlarged and non-painful
How does prostatitis/Prostatic abscess present?
Asymmetrical, painful enlargement
Dog febrile
Stiff HL
Abdo pain
How are prostatic abscesses treated?
ExpCoel + drainage of abscess
4-6w course AB to follow
How are prostatic cytsts treated?
Excision (if paraprostatic)
Drainage and omentalisation
US drainage
Castration
What is the most common prostatic neoplasia in dogs?
Adenocarcinoma
What % of prostatic neoplasia has metastasised at time of diagnosis?
80%
How do prostatic adenocarinomas metastasise?
VIa LN to lungs, skeleton (lumbar)
May directly extend into colon/bladder
How is prostatic adenocarcinoma diganosed?
Rx: wispy lumbar vertebrae, mineralised prostare
US
Biopsy (catheter/FNA)
How is prostatic neoplasia tretaeD?
Palliate - analgesia and stool softeners, urethral stent
When is scrotal ablation indicated?
Scrotal Dz
What is the reccomended Tx for cryptorchidism?
Bilateral castration
What are the 3 types of testicular tumour in the dog?
Sertoli Cell tumour
Seminoma
Interstitial Cell tumour
What are the 2 reasons that treatment of sertoli cell tumours is important?
Produce oestrogen and metastasise readily
What are the clinical signs of a sertoli cell tumour?
Abdo distention Feminisation Haem abnormalities (myelotoxicity) Prostatic enlargement
Which testicular tumours do NOT metastasise?
Interstitial cell tumour
How are testicular tumours treated?
Castrate Blood Transfusion (severe anaemia and TCP)
What is phimosis usually 2e to?
Trauma
Neoplasia
Infection
How is phimosis treated?
ABs if infected
Urinary diversion (catheter)
Preputial lavage
Resolve stricture if present
How is paraphimosis treated?
Identify cause
Relieve constriction
Reduce oedema: massage, diuretic, CS
Flush prepuce with saline and lube
How are fractures of the os penis treated?
Urethral catheter as stent
Stabilise with plate
Can manage conservatively!