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Table 3 Breathing pattern, electrical activity of the diaphragm (Eadi), and neuroventilatory efficiency (NVE) during the four steps

From: A diaphragmatic electrical activity-based optimization strategy during pressure support ventilation improves synchronization but does not impact work of breathing

 

Step 1

Step 2

Step 3

Step 4

p

Respiratory rate (breaths.min-1)

22 (18–29)

20 (19–28)

23 (19–26)

20 (19–26)

0.679

Tidal volume (mL)

432 (340–521)

419 (336–586)

442 (332–582)

440 (340–576)

0.66

Minute ventilation (L.min-1)

9.0 (7.7–11.1)

9.6 (7.4–11.3)

9.6 (7.1–11.8)

9.5 (7.5–10.9)

0.792

Eadimax (ÎĽV)

18.4 (10.5–25.6)

18.0 (12.6–21.4)

21.5 (14.5–23.4)

16.8 (14.0–22.3)

0.819

EadiAUC (ÎĽV.s)

11.6 (6.7–17.9)

9.9 (8.6–13.5)

13.9 (9.1–16.4)

11.5 (8.4–14.1)

0.819

NVE (mL.ÎĽV-1)

30.5 (12.0–45.3)

23.7 (18.6–39.3)

23.4 (17.6–36.8)

28.5 (19.0–36.7)

0.819

  1. Results are presented as median and interquartile range
  2. Eadi max peak of the Eadi, Eadi AUC area under the curve of the Eadi, NVE neuroventilatory efficiency