My husband is 65 yrs old and was diagnosis with parkinson about 2yrs ago, his PD is controlled, but for the past few wks his feet is swelling, he went to the Dr. and was told he had a heart murmur, an echo and other testing was done. Result he is being treated with lasix, but the swelling presist. What should be done at at this point. He also coughs mostly at night and sometimes wake up feeling afraid.