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http://dx.doi.org/10.4046/trd.2010.68.1.6

Bronchoscopic Cryotherapy in Patients with Central Airway Obstruction  

Lyu, Ji-Won (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Song, Jin-Woo (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Hong, Sang-Bum (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Oh, Yeon-Mok (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Shim, Tae-Sun (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Lim, Chae-Man (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Lee, Sang-Do (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Koh, Youn-Suck (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Kim, Woo-Sung (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Kim, Dong-Soon (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Choi, Chang-Min (Division of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine)
Publication Information
Tuberculosis and Respiratory Diseases / v.68, no.1, 2010 , pp. 6-9 More about this Journal
Abstract
Background: The efficacious use of interventional bronchoscope for patients with central airway obstruction due to malignant or benign lesions has been proven. Among many therapeutic bronchoscopic procedures, endobronchial cryotherapy is an established recanalization method for the obstruction of the respiratory tract. Recently, the use of this procedure has been increasing in Korea. However, limited data are available in the literature regarding its efficacy in Korea. Methods: Thirty patients, who had been treated with a flexible cryoprobe for cryotherapy were enrolled; clinical characteristics and treatment outcomes were analyzed. The patients had been treated with the technique using nitrous oxide as a cryogen under local anesthesia. Objective outcomes were 3 different degrees of therapeutic success by use of follow-up bronchoscopic findings as follows: successful, partially successful, and unsuccessful response. Subjective outcomes were evaluated as an improvement in symptoms. Results: The mean age of enrolled patients was $59{\pm}11$ years and there was a male (22/30) dominance. Twenty-three patients had malignant tumor and 7 patients had benign lesions with central airway obstruction. Successful recanalization was achieved in 11 (37%) patients, and partially successful response was achieved in 15 (50%) patients. Dyspnea was improved in 84.2% (16/19) of patients. At least one respiratory symptom was resolved in 91.3% (21/23) patients. Seven patients (23.3%) needed additional bronchoscopic electrocautery because of the bleeding as a complication of cryotherapy. Conclusion: Endobronchial cryotherapy is an effective and less expensive procedure for the management of central airway obstruction. However, the procedure should be performed under the preparing for an emergency situation, such as massive bleeding.
Keywords
Bronchoscopy; Cryotherapy; Airway Obstruction;
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