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Percutaneous Dilatational Tracheostomy (PDT)

Minimally invasive bedside tracheostomy technique for patients requiring prolonged mechanical ventilation.

Written by: Saygı Hospital Health Guide Editorial Board
Published: · Last updated:

This content is for general information; please consult your physician for diagnosis and treatment.

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What is Percutaneous Dilatational Tracheostomy (PDT)?

Percutaneous Dilatational Tracheostomy (PDT) is a minimally invasive bedside tracheostomy technique performed in the ICU. Described by Ciaglia in 1985, the Ciaglia Blue Rhino single-dilator variation is the most commonly used method today.

Indications — mechanical ventilation expected to exceed 10-14 days, difficult ventilator weaning, upper-airway obstruction, need for pulmonary toilet, and airway protection in neurological disease. Meta-analyses suggest that early tracheostomy (day 7-10) versus late provides reductions in sedation exposure and ventilator days.

Technical advantages — bedside performance (no OR transfer), shorter procedure than surgical tracheostomy (10-15 min), less bleeding and lower stomal infection rates, better cosmetic outcome. Disadvantages include posterior tracheal-wall perforation risk (mitigated with bronchoscopy) and lack of broad surgical-field control.

Contraindications — emergency airway (surgical tracheostomy is faster), pediatric <8-12 years (small anatomy), uncorrected coagulopathy, local infection, difficult anatomy (short neck, thyromegaly, high innominate artery).

Symptoms

Prolonged mechanical ventilation — expected duration >10-14 days of intubation
Difficult weaning — the need for a stable airway to allow lighter sedation and better pulmonary toilet
Prolonged airway protection — neurological disease, coma, dysphagia, aspiration risk
Upper-airway obstruction — tumor, trauma, or laryngeal injury from prolonged intubation
Pulmonary secretion management — severe COPD, neuromuscular disease (weak cough)

Risk Factors

Uncorrected coagulopathy (INR >1.5, platelets <50 000) — hemorrhage risk
Short stature, obesity, short thick neck — anatomical difficulty
High-riding innominate artery (congenital or age-related migration) — cannula pressure on the artery risks life-threatening bleeding
Cervical-spine instability — limited positioning
Local infection or advanced inflammation — risk of stomal sepsis and mediastinitis

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Day 10-14 of mechanical ventilation + expectation of prolonged airway need
  • Airway-protection need + stable hemodynamics + platelets >80 000 / INR <1.5
  • Failed weaning + persistent sedation requirements

Treatment Methods

01
Preparation — FiO2 1.0, appropriate sedation plus neuromuscular blockade, bedside flexible bronchoscope ready, sterile field, and tracheostomy kit (Ciaglia Blue Rhino or Portex Griggs)
02
Positioning — mild neck extension (roll under shoulders); the bronchoscope is passed through the endotracheal tube, which is withdrawn to just below the cords
03
Under bronchoscopic guidance — palpate and puncture between the 2nd-3rd tracheal rings in the midline; aspirate air and insert the Seldinger guidewire
04
Dilation — sequential dilation starting with a small dilator followed by the single large dilator (Blue Rhino); insert the tracheostomy cannula and inflate the cuff
05
Confirmation — ETCO2 waveform, chest X-ray (exclude pneumothorax), fiberoptic confirmation of cannula position, reconnection to ventilator
06
Early complications — bleeding, pneumothorax, false passage, posterior wall injury. Late complications — stomal infection, tracheomalacia, tracheo-innominate fistula (rare but fatal), tracheal stenosis

Which Department to Visit?

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.