Table 2

Inspiratory and expiratory times, and relative tidal volumes, related to the onset of NIPPV pressure peaks

ParameterNo pressure peak occurredOnset of NIPPV pressure peak during inspirationOnset of NIPPV pressure peak during expirationMedian duration or size of phaseProportion of time spent in this phaseProportion of NIPPV pressure peaks delivered during this phase
Inspiratory time (s)0.280.340.290.2936.3%40.0%
Expiratory time (s)0.520.550.590.5163.7%60.0%
Relative tidal volume (mV)0.330.380.340.34
  • NIPPV, nasal intermittent positive pressure ventilation.