[Trauma of the Membranous Trachea Managed by the ENT-Surgeon].

BACKGROUND

Isolated perforations of the membranous trachea are extremely rare but potentially life-threatening complications of endotracheal intubations and minimally invasive tracheostomy techniques. Most of the case-reports have been written by thoracic surgeons or anesthesiologists but both the diagnostic procedures and the therapy are not standardized. The aim of this study was to evaluate the position of the ENT-surgery in the management of these lesions.

PATIENTS AND METHODS

Over a period of 6 years we treated 5 females, 3 males and 3 children with iatrogenic lacerations of the posterior tracheal wall. The lesions were complications of percutaneous tracheostomies or emergent intubations. The charts and videoprints of each patient were reviewed.

RESULTS

Clinical presentation was marked in all patients by the characteristical symptoms of paratracheal air leakage, i.e. pneumothorax, emphysema or airway obstruction. In 6 patients the onset of the symptoms occurred with a significant delay until to 2 days after the lesion was originated. Perforations were located at the distal third (8) and at the medial third (2) of the trachea or the subglottic area (1) and had a vertical shape with a length of 0.3-5.5 cm. Surgical repair using a transtracheal cervical approach or an endoscopical procedure was performed in 8 cases. 3 lesions having a length below 2 cm were treated nonoperatively. Outcome was excellent in all patients but a certain percentage of them claimed cough and dysphonia one or more years after the acute phase.

CONCLUSIONS

Because of their life-threatening character perforations of the membranous trachea must be diagnosed as soon as possible. However, the clinical presentation is not obvious in many cases. For the exact detection of the perforations rigid endoscopy is superior to flexible technique. The early surgical repair is recommended for the majority of the cases. Therefore, the transtracheal approach and endoscopical procedures are favorized. Moreover, these methods used routinely in ENT-surgery are also appropriate for lesions of the distal part of the membranous trachea and can be an alternative to the more invasive thoracotomy. Conservative treatment strategies should be limited to selected patients with small lacerations.