ICU · Respiratory

Tracheostomy in the ICU

Also known as Percutaneous tracheostomy · Surgical tracheostomy · Percutaneous dilatational tracheostomy (PDT) · Trach · Early vs late tracheostomy · Tracheostomy weaning · Ciaglia Blue Rhino · Speaking valve (Passy-Muir)

Tracheostomy provides a secure, long-term artificial airway placed through the anterior tracheal wall (typically between the 2nd and 3rd, or 3rd and 4th, tracheal rings) for prolonged mechanical ventilation, airway protection, or upper airway obstruction. Indications: prolonged ventilation (usually considered in the second week of ventilation, with most reports favouring performance within about 10 days of respiratory failure), failed extubation, inability to protect the airway (neurological injury, neuromuscular disease), excessive secretions needing frequent suctioning, and upper airway obstruction (tumour, trauma, infection, bilateral vocal cord palsy). Percutaneous dilatational tracheostomy (PDT) is preferred in the ICU (bedside, bronchoscopy-guided, Seldinger technique) and meta-analysis shows less perioperative bleeding and stomal infection than surgical tracheostomy with no difference in death; surgical tracheostomy is reserved for complex anatomy, paediatric patients, coagulopathy, or failed PDT. Timing: the TracMan trial (Young 2013, JAMA) showed no mortality benefit of early (day 1-4) versus late (day 10+) tracheostomy — 30-day mortality 30.8% versus 31.5% — although early tracheostomy reduced intravenous sedation use in other randomised cohorts (Trouillet). Benefits of tracheostomy: reduced sedation, potentially easier weaning (lower airway resistance), improved patient comfort and communication (speaking valve), oral feeding, easier pulmonary toilet, and facilitated transfer from ICU. Complications: early — bleeding (post-tracheostomy bleeding occurs in 0.6-5%, mostly minor stomal sources), infection, stomal cellulitis, tube displacement (airway emergency in the first week as the tract is not yet formed — follow the National Tracheostomy Safety Project algorithm: oxygenate from both ends, suction to test patency, deflate cuff, remove tube, ventilate via upper airway, orotracheally intubate if needed), pneumothorax, subcutaneous emphysema, posterior tracheal wall injury. Late — tracheal stenosis, tracheomalacia, tracheo-oesophageal fistula, and tracheo-innominate artery fistula (sentinel bleeding precedes 30-50% of TIF events; mortality over 60%; risk factors include low placement and excessive cuff pressure). Management principles: keep cuff pressure at the lowest pressure that seals (measured with a manometer, never by feel — lateral wall pressure above the mucosal capillary perfusion pressure causes ischaemic damage), heated humidification is mandatory, one-way speaking valves require a fully deflated cuff, and decannulation follows a structured assessment (consciousness, capping tolerance, cough, secretions, oxygenation — an international survey found these the dominant determinants; decannulation failure = reinsertion within 48-96 h).