RESUS Review
"Patients requiring prolonged mechanical ventilation should have the endotracheal tube exchanged for a cuffed tracheostomy tube to prevent complications. Traditionally this has been done with an open surgical procedure. However, a bedside procedure has been developed that allows the tracheostomy to be placed using the Seldinger technique with dilation of the dilation rather than dissection. It is formally known as a Percutaneous Dilational Tracheostomy (PDT) and can be done either with or with bronchoscopic guidance.
This is considered a minimally invasive bedside procedure that may be easily performed in the intensive care unit or at the patient’s bedside – with continuous monitoring of the patient’s vital signs."
http://resusreview.com/2015/perc-trach-tutorial/