A partial atrioventricular septal defect, represented as a large ostium primum atrial septal defect and common (bridging) atrioventricular valve leaflets with cleft septal leaflet of the mitral valve, was diagnosed incidentally in a nine-year-old warmblood gelding used for show jumping. Initial...

Background Atrioventricular canal defect is a rare congenital disorder of the heart and describes the presence of an atrial septal defect, a variable presentation of ventricular septal alterations including ventricular septal defect malformations in the mitral and tricuspid valves. The defect has...

A 4-week-old American Quarter Horse colt presented with a recent history of diarrhea and decreased activity level. On initial physical examination, the animal was bright and alert and major findings were limited to a loud systolic heart murmur radiating widely over both sides of the thorax. While...

Tricuspid atresia or the right atrio-ventricular atresia, with concurrent atrial and ventricular septal defects, a rare congenital cardiac anomaly, was diagnosed in a three month old Arabian foal from Kuwait. The foal had been weak and cyanotic since birth, sometimes becoming dyspneic when...

Cardiac murmurs are a common finding in the adult horse and the majority are physiological. However, it is necessary to be able to differentiate between variations of normal and abnormal to ensure that potential performance and safety limiting conditions are identified and appropriately evaluated....

The sick foal provides a variety of challenges in ambulatory practice. A problem-based approach allows for the management of multifactorial conditions and the identification of those that require immediate hospitalisation. Diseases that present from birth include congenital abnormalities (atresia...

Background: Quadricuspid aortic valve (QAV) and ventricular septal defect (VSD) are congenital heart defects and have been described in both human and veterinary medical literature. Case presentation A 5-year-old half-bred bay stallion was referred for surgical castration. Cardiac murmurs were...

Heart murmurs and arrhythmias are common in horses. Assessment of their clinical relevance concerning health, performance, safety and longevity of sports horses is of highest importance. A comprehensive cardiovascular examination is crucial for diagnosis and assessment of the severity of disease....

An 8-day-old Arabo-Friesian filly was presented with signs of severe dyspnoea, tachypnoea, coughing and cyanotic mucous membranes. On auscultation, a bilateral grade V/VI continuous heart murmur and heart rate of 155 beats/min (sinus tachycardia) were detected. Lung ultrasonography revealed...

Patent ductus arteriosus (PDA) is a rare congenital cardiac defect in foals causing left to right shunting from the aorta to pulmonary artery. In extremely rare conditions, complications with pulmonary hypertension can result in right to left shunting (Eisenmenger's physiology); however, reversed...