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

BMC Pulmonary Medicine

Table 1 Sequential evaluation of pulmonary function tests.

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
FEF_25–75 L/s	1.13 (29.2)	1.41 (36.4)	2.72 (71.1)	3.51 (91.1)	4.00 (103.7)

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; FEF_25–75: forced mid-expiratory flow.

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