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Table 1 Sequential evaluation of pulmonary function tests.

From: Severe airway stenosis associated with Crohn's disease: Case report

Parameter September 2004 October 2004 December 2004 February 2005 July 2005
FVC 3.47 (102) 3.59 (106) 3.56 (106) 3.71 (107.5) 3.88 (112.3)
FEV1 1.28 (43.5) 1.6 (54.3) 2.76 (94.5) 3.19 (106.5) 3.39 (113)
FEV1/FVC% 36.9 44.5 77.6 86.05 87.42
FEF25–75 L/s 1.13 (29.2) 1.41 (36.4) 2.72 (71.1) 3.51 (91.1) 4.00 (103.7)
  1. Data in parentheses are percentage of predicted value. Measurements in September 2004 were taken on admission; those in October 2004 and December 2004 were after 4 weeks and 12 weeks of oral and inhaled steroids, respectively; those in February 2005 were after 20 weeks of therapy; and those in July 2005 after bronchoscopic dilatation and 40 weeks of therapy. FVC: forced vital capacity; FEV1: forced expiratory volume in one second; FEF25–75: forced mid-expiratory flow.