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Table 2 Ventilatory parameters at different support levels

From: Recruitment pattern of the diaphragm and extradiaphragmatic inspiratory muscles in response to different levels of pressure support

  PS 15 PS 12 PS 9 PS 6 PS 3
Tidal volume/kg (mL/kg) 7.2 ± 0.6 6.6 ± 0.6 6.2 ± 0.5* 6.1 ± 0.5* 5.8 ± 0.4*$
Respiratory rate (breaths/min) 24 ± 2 25 ± 2 27 ± 2 27 ± 2* 27 ± 2*
Minute ventilation (L) 10.9 ± 0.8 10.6 ± 0.8 10.5 ± 0.9 10.6 ± 1.0 10.3 ± 0.9*
Inspiratory time (s) 0.86 ± 0.07 0.83 ± 0.06 0.83 ± 0.07 0.86 ± 0.07 0.84 ± 0.06
  1. Values are represented as mean ± SEM
  2. PS pressure support level
  3. *Significant difference with PS 15, $significant difference with PS 12 (P < 0.05)