Peer-reviewed veterinary case report
Blood pressure and urine tests in dogs with kidney azotaemia
By Buranakarl, C et al.·Published in Veterinary research communications·2007·Department of Physiology·View original on PubMed →
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Original publication title: Relationships between degree of azotaemia and blood pressure, urinary protein:creatinine ratio and fractional excretion of electrolytes in dogs with renal azotaemia.
- Species:
- dog
Plain-English summary
A group of 31 dogs with kidney disease (renal azotaemia) had their blood pressure checked, along with urine and blood tests. Surprisingly, only 19% of these dogs had high blood pressure, but most showed high levels of protein and electrolytes in their urine. The study found that while blood pressure and protein levels weren't linked, the amount of electrolytes in the urine could indicate how severe the kidney problems were. This suggests that not all dogs with kidney disease will have high blood pressure, and monitoring electrolyte levels might help assess their condition better.
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Abstract
Blood pressure (BP) was measured in 31 renal azotaemic dogs by oscillometric measurement at the posterior tibia artery, and urine and blood samples were collected. Haematology, blood chemistry and urinalysis were performed and urinary protein:creatinine ratio (UPC) and fractional excretions of electrolytes (FE(e)) were calculated. The results showed that only 19% of dogs with renal azotaemia were hypertensive, whereas almost all of them had high urinary protein and electrolyte excretions. There was no association between BP, UPC and FE(e). A positive correlation was found between all pairs of electrolyte fractional excretions. When the severity of renal impairment was observed using plasma creatinine concentration, neither BP nor UPC was correlated. Only the FE( e ) was associated with the degree of azotaemia. The results suggest that dogs with renal azotaemia do not necessarily have hypertension. The fractional urinary excretion of electrolytes may be a good indicator for severity of renal dysfunction in azotaemic dogs.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/17186404/