Impact of the Nature and Interface of the Tracheostomy Cannula on Dyspnea in Patients Weaning From Artificial Ventilation in Weaning Unit

Inclusion Criteria: * Patient aged 18 years or older * Patient admitted to SRPR with respiratory and hemodynamic stability * Patient with a tracheostomy tube * Deflated balloon for more than 6 hours per day * Able to tolerate at least 1 hour on cap and phonation valve (deflated balloon) * Able to remain at least 3 consecutive hours without ventilation * Patient with at least one non-zero dyspnea numerical rating scale (NRS) score in the 72 hours preceding inclusion * Able to respond to self-administered questionnaires on dyspnea * Patients affiliated with a social security system or beneficiaries of such a system (excluding State Medical Assistance) * Patients who have given their informed consent * No significant expected changes in the administration of anxiolytic and analgesic treatments with anti-dyspneic properties within 2 days Exclusion Criteria: * Pregnant women (verified by a blood or urine test during hospitalization for all women of childbearing age) * Patients deprived of liberty or under legal protection (guardianship or curatorship) * Patients unable to consent to the research * Contraindication to the use of a 7 mm tracheostomy tube * Patient presenting the combination of major swallowing disorders and excessive salivary secretion making the deflation of the tracheostomy tube balloon