Urinary Flashcards
Normal equine urine output
50-60 ml/kg/day
Measures for poor kidney function
Leukocytosis
Anaemia due to reduced erythropoietin production in kidneys
Inflammatory markers
Azotemia
Bun: creatinine alterations (<10:1 with ARF, >15:1 with CRF)
Electrolytes
Protein
Albumin
Muscle enzymes
Glucose
Is serum BUN or serum creatinine more sensitive for decrease in GFR
Serum creatinine
What happens to USG in prerenal azotemia
Increases - hypersthenuric
Do horses with intrinsic renal azotemia develop hyposthenuria
No as kidney cannot actively dilute urine
What can the BUN: creatinine be reliably used to differentiate
Prerenal from renal azotemia
Hypercalcemia and hypophosphatemia are most commonly seen with which kidney disease
Chronic renal failure
What value is hyposthenuria
<1.008
What values are isosthenuric
1.008-1.014
What values are hypersthenuric
> 1.014
What is the normal usg range for a horse
1.025-1.045
Why can you get false + protein on reagent strips
Equine urine is alkaline and strips are made for acidic urine
What is the most common thing to see n sediment exam
Dicalcium phosphate
How should you measure water intake in the horse
Turn off automatic waterers, keep on own, measure volumes drank across 3-5 24h periods and take average
What are causes of myoglobinuria
Exertional rhabdomyolysis
Post anaesthetic myopathy
Atypical myopathy
Immune mediated myopathies
Nutritional myopathies
Toxic myopathies
What are causes of hemoglobinuria
Equine infectious anaemia
Immune mediated
Toxins (red maple leaf, copper, wild onion)
What are causes of haematuria
Exercised induced
Urolithiasis
UTI/pyelonephritis
Idiopathic renal haematuria
Idiopathic haemorrhagic cystitis
Urethral rents
Neoplasia
Treatment for haemaglobinuria
Treat primary disease
+/- IV fluids
Treatment for UTI/pyelonephritis
Antimicrobials
Treatment for idiopathic renal haematuria
Supportive care+/- blood transfusion
Treatment for idiopathic hemorrhagic cystitis
Nsaids
TMPS
Treatment for urethral rents
Benign neglect
If causing anaemia or not resolving then surgery
Treatment for renal neoplasia
Unilateral nephrectomy or surgical removal/chemotherapy dependent on location
Overall best diagnostics for urinary disease
History and endoscopy
Signalment more prone to urolithiasis
Geldings due to long urethra
Diagnosis of cystic calculi of the bladder
Rectal palpation
Cystoscopy
Rectal ultrasound
Treatment of cystic calculi of the bladder
Surgery/lithotripsy
Manual removal of those under 10cm in the mare
Clinical signs of cystic calculi of the bladder
Dysuria
Stranguria
Pollakiuria
Haematuria
Clinical signs of urethral calculi
Acute obstruction
Colic.
Posturing
Anuria
Blood at orifice
Diagnosis of urethral calculi
Urethroscopy
Pass urinary catheter
Abdominocentesis for bladder rupture