High frequency electrical knife via fibrobronchoscope in management of benign and malignant large airway obstruction

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High Frequency Electrical Knlfo via Fibrobronchoscope In Management of Benign and Malignant Large Airvay Obstruotion Wang Q.Q., Zhong U.S., Xie M.J. and Qi F. Quangshou Institute of Respiratory Dieeases, Cuangshou, P.R.China. Wo used high frequenoy eleotrlcal knife (EPEK) via flbrobroahoscopy to treat 20 patients with malignant large airway obstruction due to squamous and oystic adenoid oaroinoma, and 22 patients with benign large airway obstruction due to inflammatory granuloma, endobronchial tuberculosis, bronchial polys, tubercular granuloma and tracheal amyloidosis. Most of the patients were Inoperable beoause of extensive lesions or poor lung function, Olympus BFlO fibrobronchoscope and Olympus UES high frequent electricity produoer with a home-made electrioal knife were applied. After a total 73 timea of BFEK in the malignant group, dyspnea was relieved completely in 15 caaee, partly in 5 eases. FEV, improved from 1.32+0.60 l/se0 to 2.03+0.25 l/seo(P
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