Stopped: Study stopped due to safety reasons.
Very low birth weight infants are at increased risk of requiring prolonged duration of mechanical ventilation and multiple intubations, both of which are risk factors for ventilator-induced lung injury and BPD. Thus, it is important to investigate respiratory support methods that are able to effectively oxygenate and ventilate these high risk preterm infants while reducing their risk of lung injury. Nasal high-frequency ventilation is one potential intervention that may decrease the risk of respiratory failure in very low birth weight infants. Small studies have shown effective respiratory support over short time periods in infants, however these studies use nasal high-frequency oscillatory ventilation. To the investigators' knowledge there is no published studies looking at the use of nasal high-frequency jet ventilation in this high risk population. Use of non-invasive high frequency ventilation (HFV) has been described as a rescue method following failure of other non-invasive ventilator modes or as a means to increase the success post-extubation. When used as invasive high frequency ventilation, high frequency oscillatory ventilation (HFOV) or high frequency jet ventilation (HFJV) utilize supraphysiologic respiratory rates and small tidal volumes which has been shown to inflict less lung injury than conventional modes of ventilation. Using a mechanical newborn lung model, nasal HFV has improved CO2 removal when compared to conventional NIPPV. Animal studies in the lab of Kurt Albertine have shown improved ventilation and oxygenation in the high frequency nasal ventilation group versus the mechanical ventilation group in a preterm lamb model leading towards better alveolar formation noted histologically. The investigators hypothesize that extubation of very preterm infants to nHFJV will significantly decrease the rates of reintubation compared to those infants extubated to NIPPV.
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72 Hour Rate of Reintubation to Invasive Mechanical Ventilation
Timeframe: 72 hours