PR is rare and infrequently symptomatic

Gradually develops over years and results in volume overload and RV dysfunction

Aetiology: Can be congenital or acquired

• Caused by conditions that increase pulmonary artery pressure (LVF or severe lung disease)
• Acquired form - any condition causing pulmonary hypertension
• Isolated pulmonary regurgitation - impact to valve directly e.g. endocarditis

Risk factors:

• Pulmonary hypertension
• Surgical repair of tetralogy of fallot, pulmonary stenosis, pulmonary atresia
• endocarditis
• left sided heart disease

PC

*Rarely symptomatic

• Dyspnoea
• decreased exercise tolerance

On examination:

• Auscultation - low pitched diastolic murmur along left sternal border