Is there anything i do about my grandma?

whom has been in the hospital for almost two weeks. she went into the e.r. because we thought she had bronchitis but she was also weak, so they admitted her. to make a long story short, her IV they put in her exploded or expanded (something like that) and now she has a gigantic bump on her and and it is swelled from her elbow to her wrist, (she is 85) so im wondering if i can do something about that? what are the laws for negligence or malpractice? shouldn't the nurses have been watching the IV so that didnt happen?? thanks for you time in reading this!