Cardiac Disease in Senior Papillons: Reading the Stages Instead of the Diagnosis

Veterinary cardiologists use a four-stage system, and understanding it removes most of the fear from the diagnosis.

Stage A means a dog at risk because of its breed but with a completely normal heart. Many small dogs sit here for life. Stage B means a murmur is present and a structural change exists, and it splits in two. In B1 the heart has not enlarged and no treatment is needed; the dog is monitored. In B2 the heart has begun to enlarge under the extra load, and this is the point at which medication is usually started, because starting it here has been shown to delay what comes next by a substantial margin.

Stage C means congestive heart failure has occurred: fluid has backed up into the lungs and the dog needs treatment to clear it. Stage D means the failure no longer responds to standard doses.

Moving from B1 to B2 is diagnosed by an echocardiogram and by measurements taken from radiographs, not by how the murmur sounds. That distinction is why a repeat scan matters more than a repeat listen.

This is the single most valuable home measurement in canine cardiology, and it is startlingly simple.

Wait until your Papillon is genuinely asleep, not dozing. Watch the ribcage and count one breath for each complete rise and fall. Count for thirty seconds and double it, or for a full minute if you prefer.

A healthy sleeping dog almost always sits under thirty breaths a minute, and most sit comfortably in the teens or low twenties. Record the number in a notebook or a phone note with the date. Do it weekly while the dog is well, so you build a personal baseline rather than relying on a population average.

What you are watching for is a sustained rise. A resting rate that has climbed above thirty, or that has risen by a third from your dog's own normal and stayed there across several nights, is often the earliest sign that fluid is beginning to accumulate in the lungs. It frequently appears before any cough and before any change in energy.

Bring the notebook to every appointment. Cardiologists read it like a chart.

If you think your Papillon has cardiac disease, the plan is three steps: write down what you have seen and when it started, book a veterinary appointment rather than waiting for the next flare, and take video of the behaviour or symptom before you go — the thing you are worried about rarely happens in the consulting room. Screening in the parents covers patellar luxation, progressive retinal atrophy, dental disease.

What the vet visit should produce is a diagnosis and a written plan, not just reassurance: what is being ruled out, what the monitoring interval is, and which signs mean you come back sooner. Ask what the treatment costs across a year rather than per visit, because that is the number that decides whether you are managing this condition or reacting to it.

Between appointments, keep a short log — dates, what you saw, what changed. It is the single most useful thing an owner brings to a follow-up, and for cardiac disease it is often what separates a clear pattern from a guess.