Irish Wolfhound & Heart Disease
Irish Wolfhounds have one of the highest rates of DCM among all breeds. The disease frequently presents with atrial fibrillation — an irregular and often rapid heart rhythm originating in the upper chambers. Due to the breed's already large heart, even modest enlargement can quickly progress to heart failure. Early and consistent screening is critical.
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Heart conditions in Irish Wolfhounds
Dilated Cardiomyopathy (DCM)
Very High riskStudies suggest 25–40% of Irish Wolfhounds develop DCM during their lifetime. Atrial fibrillation is particularly common.
Screening recommendations
Start screening at
2–3 years old
Frequency
Annually (echocardiogram + ECG/Holter)
Recommended tests
Echocardiogram, ECG or 24-hour Holter monitor
Genetic factors
Research has identified familial inheritance patterns in Irish Wolfhounds, but specific genetic mutations have not yet been conclusively identified. The breed's limited gene pool may contribute to the high prevalence.
Common medications
Medications are determined by your veterinarian based on your dog's individual condition. This list represents commonly used medications for this breed's typical cardiac conditions.
Prognosis
With treatment, many Irish Wolfhounds live 1–2 years after diagnosis. The presence of atrial fibrillation is common and requires additional management. Early detection through screening provides the best outcomes.
Recommended reading
Other breeds at risk
Disclaimer:This content is for educational purposes only. It is based on published veterinary research and community experience, but is not written by a veterinarian and does not constitute medical advice. Every dog is different. Always consult your veterinarian or a board-certified veterinary cardiologist before making any changes to your dog's care, diet, or treatment plan.