Fig. 2
Time-curves of patients with 2 or more consecutive measurements. a FVC: Forced Vital Capacity (% predicted value), n = 2, 3, 9, 17, 28, 43, 67, 67; respectively. b PCF: Peak Cough Flow (L/min), n = 2, 4, 8, 10, 12, 21, 24, 24; respectively. c MIP: Maximum Inspiratory Pressure (cm H2O), n = 2, 3, 9, 15, 24, 38, 64, 64; respectively. e MEP: Maximum Expiratory Pressure (cm H2O), n = 2, 3, 8, 15, 24, 38, 64, 64; respectively. e SNIP: Sniff Nasal Inspiratory Pressure (cm H2O), n = 1, 1, 3, 3, 7, 12, 31, 31; respectively. Data are presented as mean (SD) and time intervals are presented in months before the indication of non-invasive ventilation (NIV)