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For OHS patients, NIV significantly improves blood gases during the night, but the effect also remains during the day. NIV provides relief for the ventilatory muscles and has been proven to have a positive effect on lung function, especially when residual capacity is increased3.
Budweiser, S., Hitzl A.P., Jörres, R.A., Schmidbauer, K., Heinemann, F., Pfeifer, M., (2007). Health-related quality of life and long-term prognosis in chronic hypercapnic respiratory failure: a prospective survival analysis. Respir Res