In recent years, percutaneous dilatational tracheostomy has become a frequently performed procedure in intensive care units. However, tracheostomy procedure has risks of complications of varying severity, such as bleeding, subcutaneous emphysema, posterior tracheal wall damage, tracheal stenosis, infection, and fistula in the early and late periods. It is important to determine the anatomical position for tracheal puncture in reducing the risk of complications. It is not always possible to determine the optimal anatomical position for tracheal puncture in patients in the intensive care unit due to reasons such as obesity patient positioning difficulties and tracheal deviation. In this stuy, we have purpose to evaluate the effect of the morphological structure of patients on the dilatational tracheostomy interference location and complications in the percutaneous dilatational tracheostomy procedure (using anatomical landmarks) performed with the forceps dilatation technique, using fiberoptic bronchoscopy and ultrasonography.