Causes of Aortic regurgitation

Aortic regurgitation may be caused by the abnormalities of aortic valve or aortic wall.

Causes of AR due to Aortic valve involvement are

1. Rheumatic heart disease
2. Infective endocarditis
3. Congenital bicuspid aortic valve
4. Congenital fenestration of valve 
5. Aortic valve prolapse due to VSD

Causes of AR due to Aortic Wall Involvement are

1. Syphilis
2. Rheumatoid arthritis
3. Ankylosing spondylitis
4. Marfan syndrome 
5. Ehler Danlos syndrome
6. Takayasu arthritis
7. Aortic dissection
8. Systemic hypertension
9. Idiopathic dilatation of aortic wall
10. Annula aortic ectasis

What are the causes of acute AR

1. Infective endocarditis
2. Trauma
3. Dissection 

Valvular

Congenital

• Bicuspid

• Quadricuspid

• Tricuspid

Ankylosing spondylitis

Infective endocarditis

Rheumatic fever

Rheumatoid arthritis

Prosthetic valve malfunction

Fenfluramine and dexfluramine

Libman-Sacks endocarditis

Non-Valvular

Aortic dissection

Marfan's syndrome

Chest trauma

Systemic hypertension

Ehlers-Danlos syndrome

Behcet's disease

Reiter's syndrome

Ankylosing spondylitis

Takayasu's arteritis

Syphilitic aortitis

Aortoannular ectasia