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  • Title: [Impact of acute respiratory failure on survival of COPD patients managed with long-term non-invasive ventilation and oxygen therapy].
    Author: Perrin C, Vandenbos F, Tamisier R, Lemoigne F, Blaive B.
    Journal: Rev Mal Respir; 2000 Feb; 17(1):91-7. PubMed ID: 10756560.
    Abstract:
    Our study aimed to assess the impact of acute respiratory failure (ARF) on survival of patients with chronic obstructive pulmonary disease (COPD) receiving long-term oxygen therapy (LTOT) plus nasal intermittent positive pressure ventilation (NIPPV). Survival was analysed retrospectively in 24 patients with severe COPD initiated to NIPPV in addition to LTOT. Fourteen patients were established on NIPPV following exacerbation of acute respiratory failure which has required mechanical ventilation (group 1). Ten patients (group 2) have never been hospitalized for ARF. Comparison of clinical details at baseline, 6 months, 1, 2, and 3 years for the two groups failed to reveal any difference with the exception of prior episodes of ARF. The probability of survival at 3 years was 65% (95% confidence interval [CI] 43-86) for the overall population, 46% (95% CI 15-77) in group 1, and 74% (95% CI 42-105) in group 2. The difference between the two groups was statistically significant. We show that ARF requiring mechanical ventilation appears to be a factor that is negatively correlated with survival for patients treated by LTOT plus NIPPV. This data suggests that NIPPV should be tried before ARF arising in COPD patients who present a deterioration in chronic respiratory failure with hypercapnia.
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