Changes in the flow-volume curve according to the degree of stenosis in patients with unilateral main bronchial stenosis.

ABSTRACT: OBJECTIVES:The shape of the flow-volume (F-V) curve is known to change to showing a prominent plateau as stenosis progresses in patients with tracheal stenosis. However, no study has evaluated changes in the F-V curve according to the degree of bronchial stenosis in patients with unilateral main bronchial stenosis. METHODS:We performed an analysis of F-V curves in 29 patients with unilateral bronchial stenosis with the aid of a graphic digitizer between January 2005 and December 2011. RESULTS:The primary diseases causing unilateral main bronchial stenosis were endobronchial tuberculosis (86%), followed by benign bronchial tumor (10%), and carcinoid (3%). All unilateral main bronchial stenoses were classified into one of five grades (I, ≤25%; II, 26%-50%; III, 51%-75%; IV, 76%-90%; V, >90%

SUBMITTER: Ko Y 

PROVIDER: S-EPMC4451542 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature