Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.
My thoughts and suggestions are as below. GERD can cause pharyngitis
as you have regurge of fluids although no heartburn. This has to be diagnosed well once the Cardiologist gives go ahead with Upper GI Endoscopy and related investigations to see for the cause of GERD, whether this requires medical management with a PPI like Omeprazole, Domperidone
as motility regulator and so on. Constant cough may then be reduced. You have been taking Metoprolol, Clonidine and Lasix with Azor for 6 years and have already noticed that stopping these medicines does not help with coughing. Pericardial effusion
can be due to Tuberculosis
as is the chronic cough
of one and half years. Hence I would advise you to go for CT scan of chest, tests of sputum for AFB, gram staining, culture and sensitivity thus getting a proper management after proper diagnosis. Re-evaluate all the clinical problems so that all things can be correlated and well treated to give you long lasting relief and possible cure.
Hope I have answered your query.
Let me know if I can assist you further.