Dear Monica, Mitral valve prolapse does not usually cause dizziness. I would be more suspicious of inner ear problems. There may be some back-flow of blood into the atrium due to the prolapse and this is called mitral regurgitation. MVP is generally a benign process and does not usually require any special treatment or cause for concern. Severe regurgitation due to MVP may require surgery to repair the valve.
Supraventricular tachycardias are fast heart beats originating from the upper chambers of the heart.
They may be associated with MVP and are often treated with beta-blockers. If you notice any of these symptoms you should notify your doctor. I hope you find this information useful. Information provided in the heart forum is for general purposes only. Only your physician can provide specific diagnoses and therapies.