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Automated O 2 titration improves exercise capacity in patients with hypercapnic chronic obstructive pulmonary disease: a randomised controlled cross-over trial
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Edité par CCSD ; BMJ Publishing Group -
International audience. Automatically titrated O 2 flows (FreeO 2 ) was compared with constant O 2 flow on exercise capacity, O 2 saturation and risk of hyperoxia-related hypercapnia in patients with severe COPD with baseline hypercapnia and long-term oxygen therapy (LTOT). Twelve patients were enrolled in a randomised double-blind cross-over study to perform exercise with either FreeO 2 or constant flow. Endurance time (primary outcome) and SpO 2 were both significantly improved with FreeO 2 compared with constant flow (p<0.04), although pCO 2 was similar in both conditions. Automated titration of O 2 significantly and clinically improved endurance walking time in patients with severe COPD receiving LTOT, without worsening of pCO 2 . Trial registration number Results , NCT01575327
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