Sick sinus syndrome in Pomeranians: symptoms and care

Sick sinus syndrome (SSS) is a heart condition that causes abnormal heart rhythms affecting the heart's natural pacemaker, the sinus node. Although commonly reported in breeds like Miniature Schnauzers, Dachshunds, and Cocker Spaniels, Pomeranians can also be affected, though less frequently documented. Recognising signs early can make a crucial difference in your dog’s health.

Understanding Sick Sinus Syndrome in Dogs

SSS disrupts the normal electrical signals in the heart, leading to irregular heartbeats. These can range from very slow rates (bradycardia) to very rapid rates (tachycardia), or a combination of both. Because the sinus node malfunctions, the heart may not pump blood adequately, which poses serious health risks.

Symptoms vary in severity. Some dogs experience mild issues, while others may suffer severe episodes that cause collapse, fainting (syncope), or even sudden death. It is vital to observe any signs of lethargy, weakness, or exercise intolerance and consult a vet promptly.

Breeds Commonly Affected

While the disorder is better recognised in breeds such as Miniature Schnauzers, Dachshunds, Cocker Spaniels, West Highland White Terriers, and Pugs, it can occur in any breed, including Pomeranians. Awareness and early detection are important no matter what breed you own.

Symptoms to Watch For

• Weakness and lethargy
• Exercise intolerance
• Episodes of collapse
• Fainting or syncope
• Seizures
• Sudden death in severe cases

Diagnosis by Your Veterinarian

Diagnosing SSS requires a comprehensive approach. Your vet will gather a full medical history and perform tests like an electrocardiogram (ECG) to measure heart rhythm and an ultrasound to evaluate heart function and rule out other cardiac diseases. In some cases, referral to a veterinary cardiologist is recommended for specialised care.

Treatment and Management Options

For mild cases, medication might be prescribed to help regulate the heart rate. However, symptomatic dogs often need implantation of a permanent pacemaker to maintain a safe heart rhythm. This surgery is complex and costly but can greatly improve quality of life and lifespan.

Owners should ensure that dogs diagnosed with SSS avoid excessive exercise and stressful situations that could worsen the condition.

Is Sick Sinus Syndrome Inherited?

The exact cause of SSS remains unclear. While some breeds show genetic predisposition, there is no confirmed inheritance pattern or genetic test for Pomeranians. Responsible breeding practices should exclude dogs diagnosed with this condition to avoid passing potential risks to offspring.

Responsible Ownership and Next Steps

If you notice your Pomeranian showing any signs suggestive of heart rhythm issues, early veterinary consultation is paramount. Timely diagnosis and intervention, including the possible use of pacemakers, can save lives and enhance your dog's wellbeing.

Regular check-ups with your vet can help monitor your dog's heart health, especially if they belong to a breed known to be at risk of cardiac conditions.

Offering your dog a calm environment and avoiding strenuous exercise are essential components of managing the condition.