Ionophore antibiotics are commonly used in food producing species as a treatment for coccidiosis in poultry and as a growth...

The aortic valve opens when the heart contracts (systole), allowing oxygenated blood to leave the left ventricle and be distributed...

Leakage of blood across the mitral valve occurs relatively commonly, and when moderate can contribute to poor athletic performance, congestive...

This is the most common physiologic arrhythmia in the horse. Approximately 15% of horses on a resting ECG and up...

The tricuspid valve lies on the right side of the heart and separates the right atrium and right ventricle. The...

Atrial fibrillation is the most common arrhythmia of clinical significance in horses. In many horses it is clinically silent but...

Supraventricular premature depolarizations (SVPDs) are also known as atrial premature contractions (APCs). An occasional SVPD is common in healthy horses...

As the name suggests 'myocarditis' describes inflammation of the heart muscle (myocardium). Myocarditis can occur with or following bacterial or...