Urology (1-5) Flashcards
what is the normal daily water consumption for a dog
50-100 mL/kg
what is the normal daily water consumption for a cat
30-50 mL/kg
what is the normal daily urine production for a dog?
50 mL/kg
what is the normal daily urine production for a cat?
25-50 mL/kg
name 6 clinical signs of uraemia
- urine smelling breath
- oral ulceration
- anorexia
- vomiting
- malaise
- neurological signs
name 6 things that should be included in a clinical exam for an animal with urination problems
- hydration status
- body condition
- halitosis
- kidney and bladder palpation
- external genitalia
- rectal exam
what 6 key things do you want to look at on a urine dip stick
- pH
- blood (or pigment)
- ketones
- bilirubin
- glucose
- protein
what is the normal protein-to-creatinine (UP:C) ratio for cats and for dogs?
cats: <0.4
dogs: <0.5
this is a marker of concentration ability that is assessed with a refractometer
urine specific gravity
what is the specific gravity for hyposthenuria
< 1.007
what is the specific gravity for isosthenuria
1.008 - 1.012
what is the specific gravity for hypersthenuria
greater than 1.013
what is the adequate urine concentration for a dog
greater than 1.030
what is the adequate urine concentration for a cat
greater than 1.035
what 2 nitrogenous waste products would you expect to be elevated in the blood if an animal has azotaemia
- creatinine
- urea
what causes pre-renal azotaemia
reduced renal perfusion
name 4 causes of reduced renal perfusion leading to pre-renal azotaemia
- hypovolaemia
- dehydration
- cardiac disease
- hypotension
this is when blood flow reaches the kidneys but the kidneys are dysfunctional
renal azotaemia
name 2 causes of renal azotaemia
- acute kidney injury
- chronic kidney disease
what will the urine specific gravity usually be with pre-renal azotaemia
high
(>1.030)
what will the urine specific gravity usually be with renal azotaemia
isosthenuric
(1.007 - 1.012)
this is produced in all cells and is excreted by the kidneys;
can detect CKD when only 25% of function is lost
SDMA
(Symmetric DiMethylArginine)
what is the only part of the kidney that can be biopsied
cortex
name 3 risks of a kidney biopsy
- anaesthetic
- haemorrhage
- worsening azotaemia
what info can a kidney FNA provide/identify
limited;
may identify lymphoma
what info can a kidney biopsy provide/identify
protein losing nephropathies
how long must kidney disease be present for in order to be considered chronic kidney disease
at least 3 months
name 6 clinical signs of chronic kidney disease
- polyuria with compensatory polydipsia
- decr. appetite/anorexia
- weight loss
- vomiting
- muscle weakness
- constipation
name 7 differential diagnoses for polyuria/polydipsia
(besides chronic kidney disease)
- Diabetes mellitus
- Hypo/Hyperadrenocorticism
- pyometra
- hepatic disease
- hyperthyroidism
- medications (steroids, diuretics)
- Diabetes insipidus
name 3 diagnostics for identifying loss of kidney function
- reduced concentration ability
- azotaemia
- elevated SDMA
what 6 factors can be looked at to decide if kidney disease is acute or chronic?
- duration of clinical signs
- kidney signs
- renal pain
- body condition
- tolerance of azotaemia
- response to treatment
name 5 things that can cause acute worsening of a stable patient with chronic kidney disease
- dehydration
- hypokalaemia
- UTI
- hypertension
- anaemia
name 3 reasons for cachexia with chronic kidney disease
- inappetence/anorexia
- inflammation
- disuse atrophy
why is dehydration common with chronic kidney disease
even if not drinking anything, unable to conentrate urine to conserve water
why is hyperphosphataemia common with chronic kidney disease
decreased GFR
(1. insufficient PO4- excretion
2. PTH stimulation
3. calcium leaching from bone
4. secondary renal hyperparathyroidism)
what are the 2 steps for phosphate restriction to control renal secondary hyperparathyroidism
- dietary management
- phosphate binders
why is proteinuria common with chronic kidney disease
damage to glomeruli and tubules secondary to underlying inflammation
what effect do ACE inhibitors have on the efferent arteriole
dilation
(decr. filtration pressure & GFR)
this can be used as an alternative to ACE inhibitors;
avoids the locale ‘ACE escape’ that can occur where angiotensin continues to be produced via chymase rather than ACE
Angiotensin Receptor Blockers
name 2 reasons for hypertension with chronic kidney disease
- altered renal blood flow
- focal infarction/ischaemia
(activation of RAAS, sympathetic drive, further vascular damage)
what is the first line therapy in dogs to treat hypertension;
reduce angiotensin, blood volume
ACE inhibitors
what is the first choice therapy in cats to treat hypertension;
calcium channel blocker, causes arteriolar dilation, including afferent arteriole
Amlodipine besylate
name 3 reasons for urinary tract infections with chronic kidney disease
- dilute urine
- polyuria
- immunodeficiency
name 4 reasons for hypokalaemia with chronic kidney disease
- polyuria
- anorexia
- fluid therapy
- RAAS activation
name 3 supportive treatments to manage nausea/uraemic gastritis
(assoc. with CKD)
- maropitant
- H2 blockers
- sucralfate
name 4 ways to maintain appetite in an animal with CKD
- warm food
- offer palatable food
- vit B12 injections
- Mirtazapine
name the IRIS stage of kidney disease
creatinine: <125 (dog), <140 (cat);
SDMA: <18 (dog), <18 (cat);
no clinical signs;
imaging/biopsy/exam findings;
proteinuria of renal origin
stage 1
name the IRIS stage of kidney disease
creatinine: 125-250 (dog), 140-250 (cat);
SDMA: 18-35 (dog), 18-25 (cat);
clinical signs usually mild if present
stage 2
name the IRIS stage of kidney disease
creatinine: 251-440 (dog), 251-440 (cat);
SDMA: 36-54 (dog), 26-38 (cat);
clinical signs usually present;
less signs more consistent with early of this stage and more signs consistent with late of this stage
stage 3
name the IRIS stage of kidney disease
creatinine: >440 (dog), >440 (cat);
SDMA: >54 (dog), >38 (cat);
severe clinical signs and risk of uraemic crisis
stage 4
what is the urine protein-to-creatinine ratio (UPC) for a proteinuric dog and cat
greater than 0.5 (dog)
greater than 0.4 (cat)
what is the systolic pressure for a normotensive dog/cat
less than 140 mmHg
what is the systolic blood pressure for a severely hypertensive dog/cat
greater than 180 mmHg
name the 4 stages of acute kidney injury
- initiation
- extension
- maintenance
- recovery
name the stage of acute kidney injury
exposure to causal agent;
precedes clinical signs;
intervention now may prevent progression
initiation
name the stage of acute kidney injury
inflammation and hypoxia → further nephron damage
extension
name the stage of acute kidney injury
irreversible damage has occurred;
on-going signs of decr. tubular function
maintenance
name the stage of acute kidney injury
repair of damage and regeneration of nephrons over weeks to months
recovery
why are kidneys at a high risk of injury
- blood supply
- high metabolic and high oxygen demand
name 7 clinical signs of acute kidney injury
- PUPD
- anuria
- lethargy
- vomiting/diarrhea
- weakness
- altered mentation
- abd. pain
name 6 clinical exam signs of acute kidney injury
- paraspinal pain
- normal or enlarged kidney
- hallitosis
- oral ulceration
- bradycardia
- bladder size
name 7 diagnostics that should be done for suspected acute kidney injury
- haematology
- serum biochemistry (potassium)
- urine analysis
- blood pressure
- Leptospirosis testing
- U/S
- radiographs
name 3 differential diagnoses for acute kidney injury
- chronic kidney disease
- acute-on-chronic
- hypoadrenocorticism
name 4 emergency treatments for hyperkalaemia with acute kidney injury
- calcium gluconate
- fluid boluses
- glucose
- insulin
what is the emergency treatment for hypocalcaemia with acute kidney injury
calcium gluconate
name 5 treatment options if fluid balance has been restored but there is still no urine output
- furosemide
- mannitol
- peritoneal dialysis
- haemodialysis
- euthanasia
name the disease
autumn/winter in UK;
skin lesions initially;
AKI develops 3-4 days later;
thrombocytopaenia;
poor prognosis
Cutaneous Renal Glomerular Vasculopathy (CRGV)
(‘Alabama Rot’)
this is abnormal development of renal tissue with foetal glomeruli present;
insidious, stunted growth, PUPD, acute-on-chronic;
histopathology necessary to confirm
renal dysplasia
this is absence of one kidney from birth;
remaining kidney usually hypertrophic to compensate;
can have normal life expectancy
renal agenesis/hypoplasia
name the disease
may or may not be present at birth;
PKD-1 gene;
as cysts enlarge, volume of functional nephrons reduces;
treat as CKD
polycystic kidney disease
name 6 defence mechanisms of the kidney against infections (pyelonephritis)
- concentrated urine produced
- peristaltic unidirectional flow of urine
- oblique entry of ureters into bladder
- frequent voiding of urine
- closed urethral sphincter
- urothelium protective barrier
name 3 features of haematology seen with pyelonephritis
- leukocytosis
- anaemia of chronic disease
- thrombocytopaenia
name 3 ultrasound signs that may indicate pyelonephritis
- hyperechoic kidney
- pelvic dilation
- bladder sediment
what are the 2 most common breeds to get amyloidosis
Shar Pei
Siamese
name 5 effects/problems caused by protein losing nephropathy (PLN)
- significant proteinuria
- reduced oncotic pressure
- thromboembolic disease
- hypertension
- lipid imbalance
name the 4 clinical consequences of nephrotic syndrome
- hypoalbuminaemia
- proteinuria
- hypercholesterolaemia
- peripheral oedema
name the tubular disease
affects proximal tubule;
inherited (Basenji) OR acquired (toxins-jerky treats/infections-Lepto);
tubules unable to reabsorb glucose, bicarb. electrolytes, minerals, amino acids
Fanconi’s syndrome
name the tubule disease
proximal tubule unable to reabsorb glucose;
osmotic diuresis with PU/PD;
recurrent UTIs;
loss of calories
primary renal glucosuria
name the type of renal tubular acidosis
failure to reabsorb HCO3-;
less severe acidosis;
alone or part of Fanconi’s;
mild to moderate hypokalaemia
type 2 (Proximal)
name the type of renal tubular acidosis
failure to excrete acid;
usually only anomaly;
severe acidosis;
moderate to severe hypokalaemia
type 1 (distal)
name the disease
loss of ability to concentrate urine;
large volumes of hyposthenuric urine;
compensatory polydipsia;
water deprivation test
Diabetes insipidus
name 6 predisposing factors for bacterial cystitis
- dilute urine
- incontinence
- urine retention
- catheter
- immunocompromise
- damaged urothelium
name the 2 main bacterias causing bacterial cystitis
- E. coli
- Enterococci
name 3 reasons to do a urine culture to diagnose bacterial cystitis
- to confirm
- to identify causal organism
- to guide antibiotic choice
name 3 conditions that can gi ve a false negative for bacterial cystitis on urine analysis
- dilute urine
- Diabetes
- Cushings
name 2 things that can give a false positive for bacterial cystits on urine analysis
1.stain
2.fat droplets
what is the 2 best empirical treatment options for gram negative bacterial cystitis
- TMPS
- Amoxi-Clav
what is the 2 best empirical treatment options for gram positive bacterial cystitis
- ampicillin
- amoxicillin
name the condition
sterile inflammatory cystitis;
young cats;
male > female;
neutered
feline idiopathic cystitis (FIC)
name 7 predisposing factors for feline idiopathic cystitis (FIC)
- multi-cat household
- nervous/anxious personality
- obesity
- indoor
- dry food
- black and white coloring
- stressful home environment
name 3 features of feline idiopathic cystitis (FIC) that may be seen on urine analysis
- very concentrated urine
- blood likely present (inflamm.)
- crystals present
- no bacteria
what 3 environmental treatments can be done for a cat with feline idiopathic cystitis (FIC)
- incr. water intake
- incr. litter trays and beds
- pheromones
what 2 medications should be given to treat a cat with feline idiopathic cystitis (FIC)
- analgesia (opioids, meloxicam)
- spasmolytics
what 3 things should be evaluating during a neuro assessment for an animal with incontinence
- anal tone & sensation
- bulbocavernosus and perineal reflexes
- urethral sphincter tone
name the condition
involuntary passage of urine;
not consciously aware;
wet patch where lying;
dribbling urine when walking
urinary incontinence
name the bladder nerve
symopathetic;
alpha and beta adrenergic;
detruser relaxation;
internal sphincter muscle (ISM) contraction
hypogastric nerve
name the bladder nerve
parasympathetic;
muscarinic;
contraction of detrusor muscle
pelvic nerve
name the bladder nerve
somatic;
contraction of external sphincter muscle
pudendal nerve
3 features of the bladder if there is a spinal lesion in the neck (cranial to hypogastric, pelvic, and pudendal nerve origins)
- large bladder
- tense bladder
- difficult to express
3 features of the bladder if there is a spinal lesion caudal to where the hypogastric nerve originates (cranial to pudendal and pelvic nerve origins)
- large bladder
- soft bladder
- easy to express
name the condition
adrenaline acting on oestrogen sensitised receptors;
incontinence while sleeping;
normal clinical exam;
diagnosis of exclusion
urinary sphincter mechanism incompetence (USMI)
how to treat intramural ectopic ureter
laser ablation
how to treat extramural ectopic ureter
transection and re-implantation
name 4 clinical signs that may be seen with benign prostatic hyperplasia
(often none - incidental finding)
- preputial discharge
- penile bleeding or haematuria
- dysuria/stranguria
- faecal tenesmus/flattened stool
name 5 treatment options for benign prostatic hyperplasia
- surgical castration
- osaterone acetate (Ypozane)
- delmadinone acetate (Tardak)
- Deslorelin
- Finasteride
name the condition
bacterial infection of the prostate;
usualy ascending infection;
may haematogenous;
concurrent cystitis;
reflux of prostatic secretions into bladder
prostatitis
name 3 clinical signs of acute prostatitis
- caudal abdominal pain
- stilted gait
- systemically unwell (v+, pyrexia, sepsis)
name 3 signs of chronic prostatitis
- signs of ‘cystitis’ (stranguria, dysuria, haematuria)
- penile discharge/haemorrhage
- dyschezia
what distinguishes acute prostatitis from chronic prostatitis
ability to cross blood-prostate barrier
(chronic can cross, acute can NOT)
name 6 prostatic diseases
- benign prostate hyperplasia
- prostatitis
- sqaumous metaplasia
- prostatic carcinoma
- prostatic abscess
- prostatic/paraprostatic cysts
this is the start of a bladder stone;
can be bacteria, epithelial cells, foreign material
nidus
this is part of bladder stone formation;
aggregation of crystals;
can occur with or without a nidus
nucleus
name 4 general treatment options for urotliths
- shock wave therapy
- endoscopic nephrolithotomy
- surgical intervention
- SUBS/stent if obstruction
name 5 clinical signs of uteroliths
- asymptomatic
- post-renal azotaemia
- big kidney little kidney (BKLK)
- calcium oxalate/struvite
- pain
name 4 treatment indication for uteroliths
- obstructive
- hydronephrosis
- azotaemia
- hyperkalaemia
name 5 general treatment options for ureteroliths
- medical therapy
- subcutaneous ureteral bypass (SUB)
- ureteric stenting
- shockwave therapy
- surgical intervention
name 5 general management options for urethroliths
- catheter placement
- retrograde hydropulsion
- urethrotomy
- urethrostomy
- laser lithotripsy
name 5 types of uroliths
- struvite
- calcium oxalate
- urate
- cystine
- Xanthine/Silicate
what are struvite uroliths made up of
- Mg
- NH3
- PO4
(MAP)
what 2 types of uroliths can NOT be seen on radiographs
- Urate
- Cystine
name the type of urolith
calculi: spherical, multiple, variable sizes, radio-opaque;
neutral to alkaline urine;
commonly associated with UTI (in dogs, not cats);
females > males
struvite
name the type of urolith
calculi: white often with jagged adges, single or multiple, radio-opaque;
most common nephrolith;
more common in males;
neutral to acidic urine;
may be assoc. with hypercalcaemia
calcium oxalate
name the urolith type
calculi: multiple, small, brownish-green, radio-lucent;
more common in males;
neutral to acidic urine;
breed related;
can be assoc. with cPSS/liver failure
uric acid / urates
name the urolith type
calculi: round, smooth, light brown/yellow, usually multiple, faintly radio-opaque;
more common in males;
acidic urine;
error in metabolism → amino aciduria
cystine
name the urolith type
calculi: jack stone appearance, moderately radio-opaque, usually multiple;
rare;
more common in males;
neutral to acidic urine;
surgical removal required
silicate