Dog Congenital Heart Disease Surgery: Welfare and Outcomes

Surgical correction of congenital heart defects in dogs has improved dramatically, offering many affected animals full life expectancy.

Key Facts

Patent ductus arteriosus (PDA) is the most common correctable congenital heart defect in dogs.
Surgical or interventional PDA closure achieves survival rates exceeding 95% when performed before heart failure develops.
Pulmonic stenosis balloon dilation is the primary treatment for moderate to severe cases.
Ventricular septal defects in dogs are often small and require monitoring rather than intervention.
Minimally invasive interventional cardiology (catheter-based closure) reduces surgical morbidity significantly.
Early detection through puppy cardiac auscultation is critical — murmurs should be assessed by a cardiologist.

Welfare Considerations

Untreated significant congenital heart defects cause progressive cardiac failure and a shortened, symptomatic life. Surgical or interventional correction offered at an appropriate stage dramatically alters the welfare trajectory — most successfully treated dogs live normal lifespans with normal activity. Welfare considerations include managing pre-operative cardiac decompensation, anaesthetic risk in young puppies, and post-operative recovery care.

What You Can Do

Ensure all puppies have a cardiac auscultation examination before purchase or adoption.
Seek cardiological assessment promptly if a murmur is detected in a puppy or young dog.
Do not delay referral if surgery or intervention is recommended — earlier treatment gives better outcomes.
Ask breeders about cardiac screening history in both parents of any litter you are considering.