[The usefulness of clinical pulmonary examination in the diagnosis of bronchial obstruction].

In order to evaluate the usefulness of physical examination of the chest in diagnosing bronchial obstruction, 11 doctors recorded their findings in 692 adult chest patients. Spirometry was carried out after the physical examination. Two categories of patients were selected; patients with known or suspected pulmonary disease (n = 209) and patients who had consulted their doctors for other reasons (n = 483). Bronchial obstruction defined as either FEV1 < 70% predicted or FEV1 < 70% of FVC, was found in 74 of the "pulmonary patients" and 55 of the "non-pulmonary" patients. In the group of patients with bronchial obstruction, a pathological or less certain sign of chest disorder was found in 91% of the "pulmonary" patients, and in 42% of the "non-pulmonary" patients (p < 0.000001). Strenuous respiration was registered in 41% of the "pulmonary" patients with bronchial obstruction, whereas sensitivity was only 2% in the other group. Where there were two or more pathological chest findings, the risk of bronchial obstruction occurring was 66% among the "pulmonary" patients, as opposed to 37% in the "non-pulmonary" group. Physical examination of the chest appeared to be very useful in the detection of bronchial obstruction in patients with pulmonary symptoms, but of limited value in screening for bronchial obstruction.