Table 3

Respiratory function: comparison of patients with cystic fibrosis (symptomatic and asymptomatic) and controls

SubjectsRespiratory rate
(breaths/min)
Compliance
(ml/cm H2O/kg)
Resistance
(cm H2O/ml/s)
FRCN2
(%)
VmaxFRC
(%)
Time constant
(s)
Symptomatic3-151 (n = 7)41.8 (12.2)3-150 1.22 (0.4)0.04 (0.01)98.6 (11.4)57.4 (24.0)3-160 0.41 (0.19)
Asymptomatic3-151 (n = 12)32.8 (8.4)1.40 (0.4)0.04 (0.01)112.8 (24.5)77.2 (37.3)0.31 (0.15)
Total patients (n =19)36.3 (10.7)1.33 (0.4)0.04 (0.01)106.8 (20.6)61.9 (32.8)3-150 0.35 (0.17)
Controls (n = 14)31.9 (9.2)1.43 (0.5)0.04 (0.01)101.7 (28)103.4 (37.3)0.34 (0.26)
  • Data expressed as mean (SD). Statistical analysis used two tailed t test.

  • 3-150 p < 0.01 v controls;

  • 3-160 p < 0.001v controls.

  • 3-151 Clinical condition at the moment of the test with or without symptoms of respiratory inflammation.