Urinary Flashcards

(68 cards)

1
Q

causes of hemoglobinuria - equine

A

RBC breakdown (intravascular)

red maple toxicity
infectious disease of hemaotpoeitic system
immune mediated disease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

causes of myoglobinuria - quine

A

muscle damage/necrosis

rhabomylolysis
sycamore toxicity
stypical myopathy
trauma
polysaccharide storage myopathy
idiopathic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

causes of hematuria - equine

A

blood from urinary, renal, bladder, repro

oak toxicity
urethral rents
urethritis
bacterial cystitis
urolithiasis
pyelonephritis
idiopathic
verminous nephritis
renal and vesicular neoplasia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

discoloured urine - false

A

oxidation after exposure to air
darked after contact with snow
plant derived pigment - white clover
drug induced
- bright orange/red - rifampin/phenothiazine/nitazoxinade
- dark brown/black - doxycycline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

urinalysis - red urine

A

dipstick - haem
spin - clear serum –> hameturia
ammonium sulphate 80% - hemaglobin will precipitate, myoglobin won’t
microscopy - cell types, crystals
endoscopy - neoplasia in bladder (Transitional cell carcinoma)
US - stones, bladder wall thickness
renal biopsy - indicated when azotemia in otherwise young healthy horse with acute renal failure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

ddx PUPD - equine

A

PPID
Diabetes mellitus
Diabetes insipidus
kidney disease/renal failure
drug induced - alpha 2s, steroids, antibiotics, pychogenic polydipsia (bored)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

polydipsia in horses - quantity

A

> 100ml/kg/day (>10% bodyweight)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

polyuria in horses - quantity

A

> 50ml/kg/day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

testing in PUPD - equine

A

watch to quantify/confirm PD - >70ml/kg/day

hematology - anemia, neutrophilia, ACTH/TRH stim

biochem - azotemia, glucose, calcium, liver parameters

urinalysis - USG (low not consistent with PUPD and suggests renal concentrating issue, medium consistant with chronic renal failure, high not consistent with PUPD and kidneys fine), glycosuria

water restriction trial - differentiate between diabetes insipidus and psychogenic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

causes PUPD - dog

A

physiological - activity, weather, diet change
renal - CKD, pyelonephritis, AKI, fanconis
hepatic
cushings
diabetes
hypercalcemia
pyo
iatrogenic
psychogenic dolydipsia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

causes PUPD - cat

A

physiological - diet change, activity, increased grooming, playing with water
renal - CKD, AKI, post obstructive diureses
diabetes
iatrogenic
hyperthyroidism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

causes of PUPD - ferrets

A

renal
cushings
diabetes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

causes of PUPD - rabbits

A

diet change - hay to grass in spring
renal - CKD
hepatic
pyo
metabolic
pregnancy toxemia
pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

causes of PUPD - birds

A

during egg laying
renal
hepatic
toxins
pituitary adenoma
stress/fear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

clinical exam in PUPD

A

Neuro -
altered mentation - hepatic encephalopathy
hyperactivity - primary polydipsia or result of hyperthyroidism

ocular -
icterus - hepatic
cataracts - diabetes mellitus
retinal changes - hypertension secondary to CKD, AKI, hyperthyroidism

cervical palpation -
goitre - hyperthyroidism

oral -
mm -
icterus - heaptic
congested - systemic inflammatory
pale - anemia of chronic disease (CKD, neoplasia)
lingual ulceration/halitosis - advanced CKD

thoracic -
tahcycardia - hyperthryoidism, pheochromocytoma, sepsis
bradycardia - addisons
painting - cushings
tachypnoea - pulmonary neoplasai/mets

derm -
cushings - skin thinning, hair loss, pigment change
hepatocutaneous syndrome

repro -
egg laying - physiological polydipsia
pregnancy - toxemia, gestational diabetes
discharge - open pyo

plantigrade stance/struggling to jump - diabetic peripheral neuropathy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

urinalysis - PUPD

A

USG - renal

dipstick -
glucose - diabetes or fanconis (or stress)
ketones - diabetes mellitus
blood - renal, pyo, contamination from repro
protein - renal, UTI, cushings

sediment -
protein:creatinine - renal, cushings
active sediment - pyo or UTI

culture - UTI, pyo, contaminated sample

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

blood testing - PUPD

A

renal -
increased urea and creatinine
+/- phosphate
non-regenerative anema

hepatic -
increased liver enzymes
decreased albumin

diabetes mellitus -
increased glucose
increased ALP, bilirubin and cholesterol
hypokalemia

cushings -
increased cholesterol, ALP and bile acids
decreased urea
stress leukogram

hyperthyroidism -
increased RBC
stress leukogram
increased glucose, renal enzymes, phosphate
decreased creatinine

hypercalcemia -
increased total and ionised calcium

pyo -
neutrophilia
mild anemia
increased globulins , liver and kidney enzymes
decreased glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

targeted disease testing - PUPD

A

SDMA - renal
bile acid stim - hepatic
fructosamine - diabetes mellitus
ACTH stim/low dose dexmethasone suppression - cushings
total/free T4 - hyperthyroidism

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

pre renal AKI

A

before kidney - vasculature
decrease in perfusion to kidneys
reduction in GFR –> increase in SDMA/urea/creatinine
reduced perfusion due to hypotension, hypovolemia, shock
–> ishemia
efferent venous drainage issues - cirrhotic liver disease, right sided heart failure, fluid overload
usually milder increases in creatinine than other types of SKI
can lead to intrinsic AKI if not treated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

AKI vs CKD

A

AKI can return to normal if treated
AKI on CKD - can only return to previous CKD state, usually to a worse state than before teh AKI
CKD - at least 3 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

intrinsic AKI

A

primary - AKI is the main presenting sign
secondary - AKI secondary to larger constellation of conditions

non specific signs -
lethargy
hypo/anorexia
nausea/vomiting/diarrhoea
PUPD
uremic breath

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

post renal AKI

A

urine not able to leave kidneys properly
obstruction of urinary tract
back up of urine –> increased tubular pressure –> reduction in GFR –> increase SDMA/creatinine/urea
urethral or ureteral obstructions or urinary tract rupture
mroe likely to be hyperkalemic - look for obstructions if see this

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

causes of AKI requiring immediate treatment (within hours)

A

infectious - pyelonephritis, pyelonephrosis
obstructive - rethral or ureteral
addisons (dogs)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

causes of AKI requiring immediate treatment (within days)

A

neoplasia - usually present as CKD
glomerulanephritis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
infectious AKI
pyelonephritis - infection of kidneys - usually e coli pyelonephrosis - dilation of renal pelvis with pus more common in acute on chronic risk factors - obstruction diabetes renal and non renal neoplasia signs - pyrexia neutrophilia renal pain renal pelvic/uretal dilation or free fluid on ultrasound diagnosis - cystocentesis - culture treatment - antibiotics with good renal perfusion lepto - doxy or amoxyclav sepsis - amoyclav surgical drainage
26
AKI - addisons in dogs
hypovolemia and distrubutive shock --> marked pre renal azotemia hyperkalemia and hyperphosphatemia looks like AKI - check basal cortisol to rule out addisonian crisis if high suspicion then ACTH stim and treat preemptively
27
treatment AKI
supportive care maintain hydration maintain calorie intake assessing and treating systemic hypertension address electrolyte and acid base imbalance discontinue nephrotoxic drugs
28
supportive care for AKI
fluids electrolytes feeding tube/assisted feeding
29
maintaining hydration in AKI
stages of fluid therapy - resuscitation - replacing intravascular deficits, only needed if signs of shock optimisation - rehydration of total body deficits - based on % dehydration signs and monitored stabilisation - maintenance water requirements - if not able to do themselves, consider ins and outs evacutation - de escalation - reduce until drinking on its own with regular hydration assessments lactated ringers potassium supplementation if needed creatinine will go up when stop - removing dilution effect note oliguria and anuria - ins and outs approach
30
maintaining calorie intake AKI
uremia --> nausea --> anorexia oral ulceration - pain medications - anti nausea (maropitant), appetite stimulants if can't eat 75% required intake by 48 hours - tube
31
treating hypertension in AKI
lots of animals with AKI get hypertension some antihypertensive medications are nephrotoxic amlopidine RAAS inhibitors can worsen AKI, can use in CKD so when reclassified at 3 months can reevaluate
32
addressing acid base and electrolyte imbalances in AKI
hyperkalemia - in obstructive AKI - IV or oral supplements hyperphosphatemia - always present in AKI hypernatremia - usually resolves with rehydration
33
renal amyloidosis
rare synthesis and deposition of misfolded proteins in tissues profuse diarrhoea - fibrin deposition in intestinal mucosa enlarged kidney - palpable per rectum subcutaneous oedema weight loss protein losing nephropathy - foamy urine amyloid deposition in renal glomeruli euthanasia, condemned at slaughter
34
pyelonephritis
cattle and pigs bacterial infection - renal pelvis actinobacterium suis or e coli in pigs range of bacteria in cattle pus in ureters at pm
35
actinobacterium suis - pyelonephritis
pigs in prepuce and preputial diverticulum of boars infection through natural service pus abscesses cystitis - common reason for culling pain (hunched back) anorexia polydipsia loss of condition vulval discharge hematuria may die suddenly urine test - bacteriology treatment - antibiotics (success dependent on stage of infection)
36
e coli - pyelonephritis
pyelonephritis in sows that are AI'd ascending infection from fecal contamination of vulva predisposed by restricted water (not flushing out enougyh) cystitis pyelonephritis increased urine frequency - little and often pus/blood in urine treatment - antibiotics, renal damage may be permanent if pyelonephritis set in prevention - hygiene and unrestricted water access
37
pyelonephritis - cattle
more in older beef cattle range of bacteria acute - pain, dullness, frequent urination, coloured urine, pyrexia, enlarged kidney chronic - loss of condition, drop in yield, urination little and often treatment - antibiotics probably won't work condemnation of carcass at salughter if systemic infection
38
acute tubular necrosis
ruminants nephrotoxins - oak, oxalates, heavy metals, aminoglycosides, tetracyclines renal ischemia - caused by mastitis, metritis, abomasal torsion, salmonellosis depression inappetance mild bloat diarrhoea treatment, supportive care, remove toxin
39
nephrosis
lambs up to 4 months dull anorexia weight loss death swollen pale kidneys at PM usually following coccicia, menatodirus or crypto infection
40
black disease
Clostridium Novyi B necrotic liver damage
41
blackleg
Clostridium chauvoei muscle tissue damage
42
botulism
clostridium botulinum nervous, flaccid paralysis
43
tetanus
clostridium tetani nervous, after open wounds, rigidity
44
pulpy kidney
clostridium perfringens D 4-10 week old lambs - unvaccinated dam older weaned lambs that aren't vaccinated often triggered by move onto better pasture or supplemental feeding sudden death enterotexmia - from clostridial toxins, not from kidney disease convulsion pulmonary oedema friable kidneys at PM prevent - vaccinate pregnant ewes, vaccinate lambs twice before weaning
45
leptospirosis
zoonosis - abortion material and urine splash high risk for humans abortion, still birth, weak calves, infertility milk drop colonises renal tubules and intermittently excreted in urine - infected waterways serology for diagnosis vaccination available
46
redwater fever (babesiosis)
coffee coloured hematuria ixodes ricinus - heather, fern, tall grass, hilly regions - peak in spring and autumn zoonosis - rare but serious signs - dullness inappetence pyrexia loud heart sounds hematuria pipe stem feces --> constipation young animals usually have no signs early exposure - immunity in endemic areas prevention - tick control treatment - imidocarb (long withdrawal), blood transfusion, symptomatic treatment (laxative for constipation)
47
AKI - horse - signs
NB often due to predisposing disease, common in hospitalised horses uremia --> anorexia colic signs uremic encephalopathy - nervous signs attempting to urinate and showing discomfort (obstruction) pyrexia - acute septic nephritis (rare) signs often masked by primary condition
48
AKI - horse - diagnosis
history, signs azotemia isosthenuria electrolyte abnormalities - variable potassium (reduced excretion but diet can compensate) serum magnesium - high in renal or pre renal calcium - elevated in Chronic renal failure minimal proteinuria bacteremia rare USG - differentiate pre ranl azotemia from kidney disease
49
AKI - horse - treatment
treat underlying disease correct dehydration and hypertension avoid nephrotoxic drugs surgery - remove obstructions
50
chronic renal failure - horse
irreversible greater than 3 months less common than acute
51
chonic renal failure - horse - signs
non specific wight loss dull PUPD peripheral oedema dull coat anemia inappetence change in mentation mild diarrhoea uremic encephalopathy
52
chronic renal failure - horse - test
azotemia mild anemia low albumin hyperkalemia - distinct feature urinalysis - renal casts, WBCs, proteinuria (more often in AKI) Ultrasound - more useful in chronic than acute biopsy - not that useful, can cause haemorrhage
53
chronic renal failure - horse - treatment
progressive and irreversible symptomatic treatment steroids avoid dehydration avoid nephrotpxic drugs vegetable oil - increase calorie intake high energy low calcium diet stone removal - probably won't bother poor prognosis long term
54
azotemia
increase in creatinine and/or urea
55
uremia
clinical signs associated with azotemia
56
mechanisms of CKD
normal - gradual inflammation and destruction of kidney functional units, 2/3 gone to signs acute kidney insult - causing long lasting inflammation and damage --> follows normal pattern acute on chronic - acute attack with existing CKD, once acute attack over then return to CKD state, usually worse off neoplasia - grows and reduces function degenerative (eg polycystic kidney disease) - cysts spread in increase in size --> reduced function juvenile onset CKD - start reducing function, over time clinical glomerular disease - marked proteinuria, excess protein, reduction in function tubulo-interstitial nephritis most common cause
57
markers of GFR
Creatinine - produced in muscles filtered by kidneys main parameter no increase until 75% loss also affected by muscle mass, hydration state and hyper thryoidism urea - produced by liver filtered by kidneys more variable than creatinine less reliable SDMA - produced by most cells filtered by kidneys less affected by external factors earlier diagnosis not affected by muscle mass less good for monitoring progression -m normal day to day variation USG - urine concentrating ability phosphates - disurption of phosphate calcium vitamin D cycle higher may mean more discomfort anemia - anemia of chronic disease reduced erythropoietin production pH - metabolic acidemia in very advanced CKD FGF-23 - novel biomarker for CKD only in cats currently early indication of phosphate increases
58
CKD signs
uremia - weight loss, halitosis, dullness, anorexia, nausea, mouth ulcers, muscle and condition loss signs relating to underlying cause different sized kidneys signs vary a lot with degree of azotemia
59
management of nutrition and hydration - CKD
renal diet - adequate calorie, digestible, good quality protein, supplements slow transition onto new diet assisted feeding appetite stimulants - metazopine, capromorelin anti nausea - ondansetron, metazpoine (don't use metazopine and ondansetron together) gastroprotectants - omeprazole (only if ulceration) readily available water, water falvour enhancer early renal diets - low phosphate and restricted protein fluids
60
management of hyperphosphatemia - CKD
target lower than range interval dietary restriction phosphate binders - given with foodm calcium or aluminium based monitor with FGF-23
61
management of proteinuria - CKD
protein restricted diet monitor RAAS inhibitors - dogs angiotension receptor blocks, cats ace inhibitors
62
management anemia - CKD
treat at PCV <0.2 erythropoeitin and iron supplements may need transfusion
63
management of hypertension - CKD
can lead to issues with other organs and seizures reliable BP measurements dogs - ace inhibitor cat - amlodipine or angiotension receptor blocker
64
other management considerations - CKD
nephrotoxic drugs - NSAIDs - discontinue positive urine cultures - treat as pyelpnephritis hypokalemia - seen in advanced cases, lethary anorexia and muscle weakness, supplement oral potassium hypercalcemia - complicated acidemia - muscle wastage and anorexia, can supplement potassium cirtate or sodium bicarbonate but can put them off food
65
monitoring CKD
iris 1 - every 6 months iris 2 - 3-6 months iris 3 - 1-3 months iris 4 - 1-2 months starved sample - blood/urine BCS muscle condition hydration creatinine (and urea but not as important) phosphates urine protein:creatinine BP - doppler PCV - anemia of chronic disease optional - acid:base, ionised calcium, FGF-23 cysto centesis - if suspicious of pyelonephritis
66
SDMA
glomerular filtration marker increases earlier in damage still affected by pre- and post-renal causes day-to-day variation so not as good for tracking progress as creatinine not affected by muscle mass will definitely be up if creatinine already increased
67
FGF-23
only in cats indicator of phosphate levels - assessment of whether phosphate restriction working assess need for early renal diet in early stages
68