Great Dane & Heart Disease
Great Danes are one of the giant breeds most commonly affected by DCM. The disease tends to present primarily in the echocardiographic form (enlarged heart chambers and reduced contractility), though arrhythmias can also occur. Atrial fibrillation is particularly common in Great Danes with DCM due to their already large heart size.
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Heart conditions in Great Danes
Dilated Cardiomyopathy (DCM)
High riskDCM is common in Great Danes, with studies suggesting prevalence of 15–35% depending on the population studied.
Screening recommendations
Start screening at
3 years old
Frequency
Annually (echocardiogram + Holter monitor)
Recommended tests
Echocardiogram, 24-hour Holter monitor
Genetic factors
The genetic basis of DCM in Great Danes is less well characterized than in Dobermans. Inheritance appears to be familial but the specific genes involved have not been definitively identified. Responsible breeders screen with echocardiograms.
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
Similar to DCM in other breeds. With early detection and treatment, many Great Danes live 1–2+ years after diagnosis. Atrial fibrillation, when present, is an additional prognostic factor that requires specific management.
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.