Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2001
Translaryngeal open ventilation to treat acute respiratory failure in acute exacerbation of chronic obstructive pulmonary disease. A preliminary report.
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Skrobik Y, Gregoretti C
Аннотация
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); PaC0(2) 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 H(2)O and 55 cm H(2)O respectively. PaO(2) increased from 40 mmHg (with FIO(2) 0.3) to 55 mmHg (with FIO(2) 0.3) in the first patient and from 55 mmHg (with FIO(2) 0.4) to 60 mmHg (with FIO(2) 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.
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); PaC0(2) 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 H(2)O and 55 cm H(2)O respectively. PaO(2) increased from 40 mmHg (with FIO(2) 0.3) to 55 mmHg (with FIO(2) 0.3) in the first patient and from 55 mmHg (with FIO(2) 0.4) to 60 mmHg (with FIO(2) 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.