Post intubation laryngeal sequelae in an intensive care unit

Area of Science:

• Critical Care Medicine
• Otolaryngology
• Pulmonology

Background:

• Mechanical ventilation via endotracheal intubation is common in intensive care units (ICUs).
• Prolonged intubation can lead to laryngotracheal injury and long-term sequelae.
• Understanding the incidence and risk factors for these complications is crucial for patient outcomes.

Purpose of the Study:

• To prospectively assess the incidence, severity, and pattern of post-intubation laryngotracheal sequelae.
• To identify risk factors associated with the development of these sequelae.
• To evaluate the effectiveness of steroid therapy in preventing complications.

Main Methods:

• A prospective study of 150 consecutive patients requiring intubation for over 24 hours.
• Fiberoptic bronchoscopy for immediate post-extubation laryngeal and tracheal evaluation.
• Rigid bronchoscopy and direct laryngoscopy for specific patient groups (small children, tracheostomy patients).

Main Results:

• 87.6% of patients showed visible laryngeal pathology post-extubation.
• 8.6% developed long-term sequelae.
• Higher incidence of sequelae in patients with seizures (25%) and head injury (19%).
• Steroid therapy did not protect against sequelae and increased pulmonary sepsis.
• Significant correlation found between immediate post-extubation slough and long-term sequelae.
• Deeper endotracheal tube insertion correlated with increased long-term sequelae.

Conclusions:

• Post-intubation laryngotracheal sequelae are common, with significant long-term implications.
• Patient factors (seizures, head injury) and procedural factors (tube depth) are associated with increased risk.
• Steroid use may be detrimental, increasing the risk of pulmonary sepsis without preventing airway injury.