Skip to main content
Fig. 4 | Journal of Intensive Care

Fig. 4

From: Accuracy evaluation of mainstream and sidestream end-tidal carbon dioxide monitoring during noninvasive ventilation: a randomized crossover trial (MASCAT-NIV trial)

Fig. 4

Bland–Altman plot of agreements between PaCO2 and PETCO2. a During SBT (before extubation); b the previous method; c, the novel method. In each plot, bias is represented by the dashed line. The limits of agreement are represented by the gray zone. a, Bland–Altman analysis comparing PaCO2 and PETCO2 for intubated patients during SBT. b, Bland–Altman analysis comparing PaCO2 and PETCO2 for those who underwent noninvasive ventilation using the previous method (22 [36.7%] of these pairs had PETCO2 values within 5 mm Hg of paired PaCO2). c), Bland–Altman analysis comparing PaCO2 and PETCO2 for those who underwent noninvasive ventilation using the novel method (52 [86.7%] of these pairs had PETCO2 values within 5 mm Hg of paired PaCO2). PETCO2, end-tidal partial pressure of carbon dioxide; PaCO2, arterial partial pressure of carbon dioxide; SBT, spontaneous breathing trial

Back to article page