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Your mitral valve which is one of the four valves is having leak that means regurgitation in simple words blood from left ventricle during contraction leaks back to left atrium.
You are going for cardiac catheter which will tell us severity and treatment can be planned.
We can know severity by Echocardiography
and Doppler study.
If you feel shortness of breath
you should check with hospital as treatment can be given to relive your symptoms.
A ECG will tell about irregular heart rate
and if you have swelling in lungs which can cause shortness of breath can be treated by diuretics ( Water Pill
). They reduce congestion and get rid of excess of water.
In such cases change in voice can be there due to nerve compression.
Arm pain if ECG is OK simple analgesic may be useful.