Congenital Heart Disease Management in Canine Patients
Summary
Congenital heart disease in dogs encompasses a diverse array of structural cardiac anomalies present at birth, including septal defects, valvular stenoses and complex outflow tract malformations. Clinical signs vary from asymptomatic murmurs detected on routine examination to exercise intolerance, syncope and right or left-sided congestive failure. Early and accurate diagnosis relies on careful auscultation supplemented by echocardiography, Doppler assessment and, where indicated, advanced imaging such as computed tomography or magnetic resonance. Therapeutic approaches range from medical management—using diuretics, vasodilators and antiarrhythmics to stabilise haemodynamics—to minimally invasive interventional techniques. Transcatheter occlusion of patent ductus arteriosus and balloon valvuloplasty for pulmonic stenosis are now standard in many referral centres, offering reduced procedural morbidity. Selected patients with complex anomalies may require open surgical correction under cardiopulmonary bypass. Concurrently, genetic screening and targeted breeding programmes for subvalvular aortic stenosis and other heritable defects aim to reduce disease prevalence and improve long-term outcomes.
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Congenital Heart Disease Management in Canine Patients publication trend
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Technical terms
Congenital heart disease (CHD): Structural cardiac anomaly present at birth.
Echocardiography: Ultrasonic imaging technique to assess heart structure and function.
Transcatheter occlusion: Minimally invasive closure of abnormal vessels via catheter-delivered devices.
Pulmonic stenosis: Narrowing of the pulmonary valve or right ventricular outflow tract.
Patent ductus arteriosus (PDA): Persistence of the fetal vascular connection between aorta and pulmonary artery.
Subvalvular aortic stenosis (SAS): Obstruction below the aortic valve due to fibromuscular ridge or tissue proliferation.
References
- Right heart echocardiographic variables and prediction of clinical severity in dogs with pulmonary stenosis. Journal of Veterinary Internal Medicine (2023).
- Transjugular Patent Ductus Arteriosus Occlusion in Seven Dogs Using the Amplatzer Vascular Plug II. Veterinary Sciences (2022).
- Genetics of canine subvalvular aortic stenosis (SAS). Companion Animal Health and Genetics (2021).
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