Is it OK for an ambulance to take an elderly person home to remove a tube

No. An ambulance cannot be used to take an elderly person home for extubation. An ambulance is a vehicle used for emergency medical services, and its main task is to provide first aid and medical care, and send the sick or injured to the hospital as soon as possible for treatment. Ambulances are not used to transport patients home who have been discharged from hospital or who need to be extubated. Therefore, it is not acceptable for an ambulance to take an elderly person home for extubation.