Talk to Cardiologist on Heart Echocardiography

My dad is diagnosed with arryhthmia (which he already have for 30 years, the doctor write AF on his medical report) with Mild mitral insufficiency and moderate tricuspid insufficiency (7 years ago he did an echo and there was no problem with his valve) Here are some conditions my dad have -My dad doesnt have breathlessness for daily activities. -My dad always cough after he drinks and very often have frothy white saliva (any explanation?) - he very often feel bloating esp at night - his cholesterol level sometimes high. Here are his echo report RV function decreased TAPSE 15mm. E/A < 1 diastolic relaxation dysfunction. LVEF 76%. diastolic dysfunction gr. 1. RA is not dilated. MI mild and TI moderate. How’s the prognosis? And life expectancy? Do most people live a long and good life with this condition? Does surgery is needed for sure?? Is antiplatelet needed for my dad?? Cause the cardiologist didnt give my dad medicine at all