본 연구를 통하여 프로토콜 적용이 도관개선 성공률을 향상시키는데 도움이 되었고, 합병증 발생에 영향이 없음을 확인하였다.
Through this study, it was confirmed that the application of the protocol helped to improve the success rate of catheterization and did not affect the occurrence of complications.