34. Acute kidney diseases in dogs and cats Flashcards
General Clinical signs of renal diseases
Anorexia
Weightloss
Vomitting
Immunosuppresion
Anaemia
Dehydration
Oedema
PU/PD
Anuria
Uraemic coma
Uraemic Pneumonia
Resp signs
CNS signs
Blindness
What is the 3 legged chair for renal diagnosis
Blood test
Imaging
Urinalysis
How to assess glomerular filtration
GFR
Urinary protein - dipstick
How to assess tubular function
SG
Urine sediment - glycosuria, proteinuria
Glomerular filtration rate involves
Urea, creatinine, SDMA measurement
Clearance testing
UPC parameters
Normal - <0.2
Borderline 0.2 — .4
Proteinuria >0.4 (.5 in dogs)
SG measurements
Isosthenuria = 1.008 - 1.012
Hypersthenuria = >1.030
Hyposthenuria = <1.007
Clinical syndromes associated with renal disorders
Kidney disease
azotaemia
Uraemia
Renal failure
Types of Azotaemia
Pre/ extra renal Azotaemia
Renal Azotaemia
Post renal Azotaemia
Pre renal Azotaemia
Haemodynamic, transient & fluid responsive
Very common, curable
Decreased GFR due to dehydration
Aetiology of pre renal Azotaemia
heart failure
diuuretic/ vasodilator use
What can long term pre renal Azotaemia lead to
kidney injury in > 1 days
Renal Azotaemia
infectious
Ischaemic
Toxic causes
can lead to AKI
Post renal Azotaemia
Lower urinary tract
obstruction/ leakage into abdomen
Diagnosis of post renal Azotaemia
imaging
Abdo fluid creatinine: blood creatinine = >2.1
Abdo fluid K»_space;> Blood K
Which Azotaemias are treatable
Prerenal Azotaemia
Postrenal Azotaemia
AKI due to these
Non treatable Azotaemias
CKD & prerenal/ postrenal cause
CKD & end stage kidney failure
Acute Nephrosis & Nephritis
Acute tubular cell injury & death —-> nephron dysfunction —-> decreased GFR & AKI
Nephrotoxic causes of Acute Nephrosis & Nephritis
Abx (Gentamycin)
Ethylene Glycol
Lilies (Fe. only)
Myoglobin
IV Xray contrast fluid
Heavy metals
Hypercalcaemia
Anaesthetic
Haemoglobin
Grapes/Raisins
Chemotherapy
Ischaemic causes of Acute Nephrosis & Nephritis
Hypotension
Sepsis
Hypercalcaemia
Trauma
Hypovolaemia
NSAIDS
Deep anaesthesia
Hypothermia
Hyperthermia
Burns