My character is 20yr old female that received PDA sx upon birth, but she has a weakened heart and will eventually need a heart transplant. I have her taking enalapril, digoxin, Lasix, Nitroglycerin sublingual (emergency use only) and she has a PT/INR kit at home for Coumadin. The dosages are not necessary for my novel, but I would like to make sure these medications make sense. Any help would be appreciated.