Patients with neurological or neuromuscular diseases may need a long-term tracheostomy to improve their respiratory function. Bacterial flora and bacterial drug resistance in the respiratory tract have never been studied until then for this type of patient in spite of their frequent hospital stay, their regular exposition to antibiotics and their susceptibility to swallowing disorders due to their pathology. This study is based on a single tracheal aspirate within the 48 first hours of the patient stay for a ventilation check up beside any infectious context to describe the basal bacterial respiratory flora.