Hypercapnic failure in patients with COPD under 4 weeks non-invasive, home mechanical ventilation

Pneumologie
Th BlankenburgW Schütte

Abstract

In patients with severe COPD, ventilatory pump failure is a separate pathophysiological factor. Non-invasive ventilatory support has been introduced in COPD with acute-on-chronic respiratory failure according to evidence-based medicine, but the benefit of long-term ventilation is still not proven. The purpose of this investigation was to evaluate the feasibility of carbon dioxide-reducing, non-invasive, home mechanical ventilation in patients with chronic hypercapnic respiratory failure due to stable COPD. In 40 patients (median age 72.2/61.1 - 78.1 years), with chronic ventilatory failure due to COPD who received non-invasive, home mechanical ventilation (NIV) successfully we analysed blood gases, lung function, 6-minute walking distance and quality of life before NPPV and after a period of at least 4 weeks of home therapy. Successful home mechanical ventilation could be proven by a significant decrease of hypercapnia during spontaneous breathing: 8.5 kPa (64.6 mmHg) before NIV to 5.9 kPa (45.2 mm Hg) during NIV. Six-minute walking distance increased significantly from 89 m to 230 m. General health perception (SF 36) improved from 27 to 56 significantly as did other quality of life categories. Although this investigation has s...Continue Reading

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