[The diagnosis of pleural diseases with a fiberbronchoscope under open pneumothorax].

Thoracoscopy, using a fiberbronchoscope under open pneumothorax, was performed in 27 cases suffering from pleural diseases undiagnosed. The overall diagnostic rate was 92.3%. The items observed included pulse rate, respiration rate, blood pressure, blood gas analysis, electrocardiography and thoracic pressure measure. It was found that this method has little influence on cardiopneumatic function, no harm fiberbronchoscope, and is simple and safe.