St. Jude Medical
- Information on how heart valves work, heart sounds, and types and causes of valvular disease.
- http://www.sjm.com/conditions/conditionindex.aspx

The Merck Manual
- Looks at stenosis and regurgitation for aortic, mitral and tricuspid valves, their symptoms and signs, diagnosis and treatment. A look at pulmonary valves and idiopathic hypertrophic subaortic stenosis.
- http://www.merck.com/pubs/mm_geriatrics/sec11/ch89.htm

euroSCORE for Patients
- Provides an interactive tool that allows a patient to work out their own risk for all forms of cardiac surgery such as valve surgery.
- http://www.euroscore.org/patienteuroscore2.html

Guidelines for the Management of Patients With Valvular Heart Disease
- A report of the American College of Cardiology and American Heart Association Task Force on Practice Guidelines.
- http://circ.ahajournals.org/cgi/content/full/98/18/1949

Texas Medical Center: Types of Valve Disease
- A look at both stenosis and regurgitation of mitral valves, aortic valves, tricuspid valves and pulmonary valves. For each one causes, symptoms and signs are looked at.
- http://www.tmc.edu/thi/valvedis.html

Stress Management Corner
- A discussion about low blood volume, often associated with mitral valve prolapse.
- http://www.tmius.com/smcorn26.HTML

One Valve For Life
- Details on mechanical heart valves and tissue valves. Highlights patient stories and features information on valve durability, hemodynamic performance, operative risk and life expectancy.
- http://www.onevalveforlife.com

Medtronic
- Explains what heart valves are and how problem valves can be treated. Planning for the future and further resources available.
- http://www.medtronic.com/cardiac/heartvalves/intro.html

King Faisal Specialist Hospital and Research Centre
- An extensive look at what valvular heart disease is, as well as the diagnosing and treatment.
- http://www.kfshrc.edu.sa/cardiovascular/html/valvular_heart_disease.html

Heart Point
- A lot to be found here, including regurgitation, causes of valvular disease, therapy and surgeries available. An excellent diagram of regurgitant mitral valve in motion is shown.
- http://www.heartpoint.com/valvularheartdx.html