Canine Heart Disease (NT-proBNP)
Canine heart disease can present with respiratory signs that overlap with primary airway disease. NT-proBNP is released in response to myocardial wall stress; quantitative measurement supports cardiac disease screening and helps distinguish cardiac from respiratory causes of dyspnoea. Point-of-care testing enables cardiac triage during the same consultation.
Fact Table
| Species | Canine |
|---|---|
| Biomarkers | N-Terminal Pro-Brain Natriuretic Peptide (NT-proBNP) |
| Tests |
Clinical Context
Canine heart disease can present with respiratory signs that overlap with primary airway disease. NT-proBNP is released in response to myocardial wall stress; quantitative measurement supports cardiac disease screening and helps distinguish cardiac from respiratory causes of dyspnoea. Point-of-care testing enables cardiac triage during the same consultation.
Interpretation should combine the quantitative result with the patient's signalment, history, clinical signs, vaccination or treatment history where relevant, and any other laboratory findings. A single value is rarely diagnostic on its own; serial measurements often provide more useful information.
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Related Articles
- NT-proBNP in Dogs and Cats: Heart vs Breathing Trouble A coughing dog and fast-breathing cat look alike. NT-proBNP tells whether the cause is heart or lungs — in 10–20 minutes. Here are the cut-offs.
- SDMA and NT-proBNP: Kidney and Heart Markers in Pets A guide to SDMA, cystatin C, NT-proBNP, cPL, CRP, SAA, cortisol and thyroid hormones — reference ranges and how quantitative testing helps.
Clinical literature cited in related articles
2026-09-12
MEDIUM
FAQ
What is NT-proBNP?
NT-proBNP (N-terminal pro-B-type natriuretic peptide) is a peptide released when cardiac muscle stretches under pressure or volume overload. Its blood concentration rises with cardiac stress, making it a useful marker for heart disease and congestive heart failure in dogs and cats.
Can NT-proBNP tell heart failure from a breathing problem?
Yes — this is its most valuable use. In a dyspneic cat or a coughing dog, a high NT-proBNP points toward a cardiac cause, while a low value makes primary respiratory disease more likely. It is a triage tool, not a replacement for echocardiography.
Does NT-proBNP replace an echocardiogram?
No. NT-proBNP tells you the heart is under stress; an echocardiogram tells you why. They are complementary — NT-proBNP screens and triages, echo characterizes.