Background: In 2015, training of nurses qualified to perform specified medical procedures began.　Method: Interviews with specified nurses regarding their practice of tracheostomy cannula replacement.　Results: The following seven outcomes were identified: [expectation of an increased number of cases with no occurrence of cannula obstruction] , [thorough cannula replacement by developing an understanding of the feel on their hands] , [comprehensive observation and judgment on breathing status] , [appropriate continued nursing care based on observation] , [improved cooperation with doctors] , [improved cooperation with nurses] , and [gaining of trust from patients and their family members] .　Discussion: The study indicates that the breathing of patients can be maintained safely through procedures performed by the nurses and that the improved observation and judgment skills have a positive impact on nursing care as well. Further contribution to the improvement of patients’ QOL is possible through cooperation with doctors.