Feeding Tube

An 84 year old man has had Parkinson’s Disease for 6 years. Medication doesn’t help much to control the symptoms. He has been in a nursing home for the past two years. He is incontinent, and cannot feed himself (he is spoon fed by others). He also has dementia, resulting in delusions and on and off recognition of his family members. He has just started having trouble swallowing, and because of this often has trouble breathing during feedings. The nursing home wants to either insert a feeding tube into his mouth, or a PEG that would provide nutrition through a tube from his side directly into his stomach. But they are uncertain about whether they can order it without his consent. What should they do?