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.
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.
Medtronic - Explains what heart valves are and how problem valves can be treated. Planning for the future and further resources available.
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.
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.
St. Jude Medical - Information on how heart valves work, heart sounds, and types and causes of valvular disease.
Stress Management Corner - A discussion about low blood volume, often associated with mitral valve prolapse.