Percutaneous Dilatational Tracheostomy
Timothy Van Natta
G. Patrick Kealey
Percutaneous dilatational tracheostomy is now an accepted operative technique. There are two slightly different technical approaches to this procedure, which differ primarily in the use or omission of bronchoscopic guidance. Both are discussed in this chapter.
Steps in Procedure
Position patient, check equipment, including balloon of tracheostomy tube
Bronchoscopic visualization of proximal trachea (optional)
Vertical incision (or horizontal) extending 2 cm inferiorly from cricoid cartilage
Visualize space between second and third tracheal rings
Insert needle, aspirate air, inject lidocaine
Exchange needle for plastic catheter and pass guidewire (bronchoscopic control)
Pass lubricated dilator(s)
Using dilator as obturator, pass lubricated tracheostomy tube and secure
Hallmark Anatomic Complications
Bleeding
Injury to posterior wall of trachea
Tracheal ring fracture
Tracheal stenosis
List of Structures
Trachea
Cricoid cartilage
Percutaneous dilatational tracheostomy is generally not recommended for achieving emergency airway control or access. Endotracheal intubation or cricothyrotomy is the most appropriate emergency technique to achieve adequate airway control and ventilation. Percutaneous dilatational tracheostomy is a safe and appropriate technique for use in the intubated patient who requires elective tracheostomy. It may be done at the bedside in the intensive care unit.
Contraindications to percutaneous dilatational tracheostomy include the following:
Inability to extend the cervical spine
Unstable cervical spine
Inability to palpate anatomic landmarks because of edema, obesity, or anatomic abnormalities
Patients who are not intubated
Calcification of the tracheal rings on chest radiograph
Pediatric patients (younger than 16 years of age) and adults with small airways
Need for emergency airway management (relative)
Appropriate positioning and preparation of the patient are essential to achieving good operative results. Therefore, in both techniques, the following preparations must be made. Place the intubated patient in a supine position. Continuous monitoring should include electrocardiographic monitoring of heart rate, blood pressure, pulse oximetry, inspired title volume, and ventilator pressures. Increase the inspired oxygen fraction to 100% and ensure adequate ventilation. Because a firm operating surface is necessary, place a cardiopulmonary resuscitation board under the patient’s upper torso. Extend the cervical spine by placing a rolled towel between the shoulder blades (see Fig. 4-1A). Prep and drape the anterior neck with sterile towels.
Percutaneous Dilatational Tracheostomy without Bronchoscopic Guidance (Fig. 4.1)
Technical and Anatomic Points
Palpate the anterior neck and identify the landmarks, including the cricoid cartilage (see also Fig. 4.1B). Infiltrate the skin and subcutaneous tissues with 1% lidocaine solution with epinephrine before making the skin incision. Make the skin incision starting at the inferior edge of the cricoid cartilage and extending inferiorly 2 cm. Divide the subcutaneous tissues bluntly with hemostats until the trachea is visualized and its cartilage rings are palpable. This allows for a clear visual delineation of tracheal anatomy, including the location of the tracheal midline, and obviates the need for concomitant bronchoscopy.