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Noninvasive ventilation in cystic fibrosis patients with acute or chronic respiratory failure

¹ Dept of Cardiothoracic Medicine, St George's Hospital, and ² Dept of Cystic Fibrosis, Royal Brompton Hospital, London, UK

CORRESPONDENCE: M.E. Hodson, Dept of Cystic Fibrosis, Royal Brompton Hospital, Sydney Street, London, SW3 6NP, UK. Fax: 44 2073518052

Keywords: cystic fibrosis, lung transplantation, noninvasive ventilation

Received: February 23, 2001
Accepted September 17, 2001

The experience of using noninvasive ventilation (NIV) in 113 adult cystic fibrosis (CF) patients with chronic respiratory failure, during episodes of acute deterioration in respiratory function is reported.

The patients aged 15–44 yrs were divided into three groups. Group A consisted of 65 patients (median forced expiratory volume in one second (FEV₁)/forced vital capacity (FVC) 0.7/1.4 L) who were on a lung transplant waiting list. Group B consisted of 25 patients (median FEV₁/FVC 0.7/1.4 L) who were being evaluated for lung transplantation. Group C consisted of 23 patients (median FEV₁/FVC 0.6/1.2 L) who were not being considered for lung transplantation.

The mean duration of NIV support for groups A, B and C was 61 (range: 1–600) days, 53 (1–279) days and 45 (0.5–379) days respectively. Twenty-three patients in group A subsequently received lung transplantation and 12 of these patients had a median survival of 39 months postsurgery. Thirty-nine patients died and three awaited transplantation. Five patients in group B received a transplant four of whom survived; thirteen patients died and seven awaited transplantation. Twenty patients in group C died.

Noninvasive ventilation improved hypoxia but failed to correct hypercapnia in these cystic fibrosis patients. Noninvasive ventilation is useful in the treatment of acute episodes of respiratory failure in cystic fibrosis patients with end-stage lung disease who have been accepted, or are being evaluated, for lung transplantation. For these patients, there is a possibility of prolonging life if they are successfully treated for their acute episode of respiratory failure until transplantation. In this group, treatment is not merely prolonging the process of dying.