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Fig. 3 | Journal of Intensive Care

Fig. 3

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

Fig. 3

Correlations between PaCO2 and PETCO2. a) During SBT (before extubation); b) the previous method; c) the novel method. There was a significant positive correlation between PaCO2 and PETCO2 in all methods (during SBT r = 0.94 [95% CI, 0.90–0.96], P < 0.001; the previous method, r = 0.79 [95% CI, 0.67–0.87], P < 0.001; the novel method, r = 0.92 [95% CI, 0.87–0.95], P < 0.001). Abbreviations: CI, confidence interval; PETCO2, end-tidal partial pressure of carbon dioxide; PaCO2, arterial partial pressure of carbon dioxide; SBT, spontaneous breathing trial

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Journal of Intensive Care

ISSN: 2052-0492