My father in law just returned from the hospital where he was admitted from emergency care due to shortness of breath, a-fib, and heart failure. He also has glaucoma, dry eyes, a low platelet count, and prostate cancer. Ten years ago he was having problems with his blood pooling in his legs and had a venus closure procedure done. Could these all be connected? I m googling and what I m finding is Rheumatoid Arthritis. Is that a possibility?