Clinical Findings:

• In early case or case with mild to moderate myocardial damage, decreased exercise tolerance is prominent signs
• Increased heart rate and heart size
• There is marked arrhythmias, particularly tachyarrhythmias
• Enlargement of heart, dyspnoea
• Early exhaustion and collapse
• Blood stasis, chronic venous congestion
• In late stage or severe myocardial damage, there may be sudden death in animals with acute heart failure or severe dyspnoea or congestive heart failure

Diagnosis:

• On basis of history and clinical findings
• On basis of laboratory findings; elevated SGOT, SGPT and lactose dehydrogenase activity
• ECG and echocardiography

Differential diagnosis:

• Congestive heart failure
• Other disease causing decreased exercise intolerance

Treatment:

• Correction of primary causes with appropriate measures.
• Symptomatic treatment should be carried out.
• Digitalization is helpful.
• Medical treatment doesnot help in large animals.