title: [A case report of a ball-valve type obstruction of the endotracheal tube caused by dried secretions].
mesh_terms: D000402:Airway Obstruction / Q000209:etiology*; D000770:Anesthesia, Endotracheal / Q000009:adverse effects / Q000295:instrumentation*; D001249:Asthma / Q000150:complications; D006330:Heart Defects, Congenital / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male; D014132:Trachea / Q000378:metabolism*