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. 2010 Dec 17;3:1–5. doi: 10.2147/CLEP.S12885

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© 2011 Rasmussen et al, publisher and licensee Dove Medical Press Ltd.

This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited.

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Survival curves according to hemoglobin levels at ICU admission for chronic obstructive pulmonary disease patients treated with mechanical ventilation [----Hb < 7.4 mmol/L (12.0 g/dL); — 7.4 mmol/L (12.0 g/dL) < Hb < 9.3 mmol/L (15.0 g/dL); Hgb > 9.3 mmol/L (15.0 g/dL)].

Inline graphic — Survival curves according to hemoglobin levels at ICU admission for chronic obstructive pulmonary disease patients treated with mechanical ventilation [----Hb < 7.4 mmol/L (12.0 g/dL); — 7.4 mmol/L (12.0 g/dL) < Hb < 9.3 mmol/L (15.0 g/dL); Hgb > 9.3 mmol/L (15.0 g/dL)].