title: Determinants of successful selective tracheobronchial suctioning.
mesh_terms: D001980:Bronchi; D002404:Catheterization / Q000295:instrumentation; D004322:Drainage; D006801:Humans; D007442:Intubation, Intratracheal; D008722:Methods; D011187:Posture; D011877:Radionuclide Imaging; D013667:Technetium; D014132:Trachea; D014140:Tracheotomy
chemical_list: D013667:Technetium