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Translaryngeal open ventilation to treat acute respiratory failure in acute exacerbation of chronic obstructive pulmonary disease. A preliminary report

[La ventilation ouverte, translaryngée, pour traiter l'insuffisance respiratoire aiguë d'une maladie pulmonaire obstructive chronique : un compte rendu préliminaire]

Yoanna Skrobik, MD FRCPC^* and Cesare Gregoretti, MD

^* Form the Critical Care Division,
Maisonneuve Rosemont Hospital, Montréal, Québec Canada; and the Intensive Care Unit, CTO, CRF, ICORMA, Torino, Italy.

Dr. Yoanna Skrobik, Critical Care Division, Hôpital Maisonneuve-Rosemont, 5415, boul. de l'Assomption, Montréal, Québec H1T 2M4, Canada. Phone: 514-252-3400; Fax: 514-252-3806; E-mail: skrobiky{at}total.net

Purpose: To describe a minimally invasive alternative to conventional mechanical ventilation, using a small size uncuffed nasotracheal tube (translaryngeal open ventilation) paired with pressure control ventilation, in acute respiratory failure complicating chronic obstructive pulmonary disease (COPD).

Clinical features: Two cooperative COPD patients, who failed noninvasive mechanical ventilation, were intubated nasotracheally. Mechanical ventilation was initiated in pressure control mode via an uncuffed 6 mm tube.

Results: Respiratory rate improved after 1 hour (from 44 to 28 breaths•min^–1 in case 1 and from 32 to 25 breaths•min^–1 in case 2); PaC0₂ decreased (from 120 to 62 mmHg in case 1 and from 69 to 51 mmHg in case 2); with pressure control mode levels of 45 cm H₂O and 55 cm H₂O respectively. PaO₂ increased from 40 mmHg (with FIO₂ 0.3) to 55 mmHg (with FIO₂ 0.3) in the first patient and from 55 mmHg (with FIO₂ 0.4) to 60 mmHg (with FIO₂ 0.4 ) in the second patient; pH improved from 7.18 to 7.31 in case 1 and from 7.22 to 7.39 in case 2. Patients were able to trigger the ventilator, speak, swallow and to clear secretions spontaneously. Both patients were ventilated for three days in this manner without any adverse effects. Both survived and were discharged home after 20 and 18 days in hospital respectively.

Conclusion: This very preliminary report suggests that, in carefully selected patients who fail mask ventilation, mechanical support with translaryngeal open ventilation can improve gas exchange, breathing pattern and tachypnea, without hindering glottic function.

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