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Annals of Intensive Care
Fig. 2 | Annals of Intensive Care

Fig. 2

From: A randomised controlled trial of non-invasive ventilation compared with extracorporeal carbon dioxide removal for acute hypercapnic exacerbations of chronic obstructive pulmonary disease

Fig. 2

Respiratory rate, arterial pH and PaCO2 over the first 48 h. a: Respiratory rate over the first 48 h (* statistically significant difference between the NIV and ECCO2R groups (p < 0.05); ^ statistically significant difference over time in the ECCO2R group compared with baseline (time 0) (p < 0.05)); b: Arterial pH over the first 48 h (* statistically significant difference between the NIV and ECCO2R groups (p < 0.05); ^ statistically significant difference over time in the ECCO2R group compared with baseline (time 0) (p < 0.05); # statistically significant difference over time in the NIV group compared with baseline (time 0) (p < 0.05)); c: PaCO2 over the first 48 h (* statistically significant difference between the NIV and ECCO2R groups (p < 0.05); ^ statistically significant difference over time in the ECCO2R group compared with baseline (time 0) (p < 0.05); # statistically significant difference over time in the NIV group compared with baseline (time 0) (p < 0.05))

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