Long-Term Noninvasive Ventilation in Patients with Cystic Fibrosis

Background: The benefits of long-termnoninvasive positive pressure ventilation (NPPV) have not yet been evaluated in patients with cystic fibrosis (CF). Objectives: To evaluate the effect of 1 year of NPPV on lung function in patients with advanced CF. Methods: Data were obtained from the French CF Registry. Patients who started NPPV (ventilated group, n = 41) were compared to matched controls (control group, n = 41). Each ventilated patient was matched to a control 1 year before the start of NPPV (year –1) for gender, CFTR genotype, age ± 5 years and forced expiratory volume in 1 s (FEV1) ± 10%. The ventilated group was compared to the control group at year –1, during the year of NPPV initiation (year 0) and 1 year after NPPV (year +1). Results: At year –1, the two groups were comparable with regard to forced vital capacity (FVC; 43.7 vs. 49.1% in the ventilated group and the control group, respectively) and FEV1 (28.2 vs. 28.5%). At year 0, the ventilated group had significantly greater declines in FVC (–3.6 ± 9.2 vs. +0.8 ± 8.9%, p = 0.03) and in FEV1 (–3.0 ± 6.7 vs. +2.6 ± 4.4, p < 0.0001). At year +1, the decreases in FVC (–2.1 ± 10.0 vs. –2.2 ± 9.9%) and in FEV1 (–2.2 ± 6.7 vs. –2.3 ± 6.2%) were similar in both groups. Conclusions: These data show that NPPV is associated with stabilization of the decrease in lung function in patients with advanced CF.

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