Abstract:ObjectiveTo explore clinical application and significance of percutaneous dilational tracheostomy (PDT) in critical patients necessitating secondary tracheostomy.MethodsClinical data of 45 critical patients who necessitated secondary tracheostomy and experienced PDT were analyzed retrospectively. The analyzed data included surgical site, operation time, as well as intraoperative and postoperative complications.ResultsBedside PDT was completed successfully in all the patients, with an average operation time of 5 minutes and intraoperative bleeding of 5 to 20ml. No major intraoperative complications such as massive hemorrhage, tracheal injury, and asphyxia occurred. No postoperative complications including hemorrhage, incision infection, and pneumothorax were observed.ConclusionAlthough with increased difficulty, it will have better safety to perform secondary PDT in critical patients with strict control of indications, proper choice of surgical manner and site, as well as close supervision monitoring.