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Table 2 Physiological outcomes in the two groups in the first 96 h

From: Diaphragm thickening fraction predicts noninvasive ventilation outcome: a preliminary physiological study

Outcome

Study group

P value

NIV success (n = 8)

NIV failure (n = 10)

Diaphragm thickening fraction in the first 96 h after enrolment (%)

 1st operator

54.6 (47.3–61.9)

31.8 (26.1–37.6)

< 0.001

 2nd operator

48.1 (42.9–53.3)

37.3 (29.8–44.8)

0.016

 Mean between the 2 operators

52.1 (45.7–58.5)

34.3 (28.6–40)

< 0.001

Respiratory rate/Diaphragm thickening fraction in the first 96 h after enrolment

 1st operator

0.55 (0.45–0.66)

1.4 (1.1–1.6)

< 0.001

 2nd operator

0.61 (0.49–0.73)

1.1 (0.89–1.28)

< 0.001

 Mean between the 2 operators

0.58 (0.47–0.69)

1.24 (1.05–1.42)

< 0.001

PaO2/FiO2 ratio in the first 96 h after enrolment (mmHg)

 

236 (206–267)

163 (144–183)

< 0.001

PaCO2 in the first 96 h after enrolment (mmHg)

 

35 (32–38)

35 (32–39)

0.99

Respiratory rate in the first 96 h after enrolment, breaths per minute

 

24 (22–27)

31 (28–33)

< 0.001

  1. Results are displayed as Means (95% CI). P values are calculated with one-way ANOVA
  2. NIV non-invasive ventilation