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Objectives: Laryngotracheal separation (LTS) is an ideal surgical method for intractable aspiration; however, the oral side of the trachéal stump can easily disintegrate. Therefore, we developed a modified LTS method. We performed sub- glottic laryngeal closure (SGLC) as a new surgical method and evaluated the outcomes. Methods: We retrospectively analyzed the medical records of 36 patients (28 male and 8 female; 15 to 91 years of age) who underwent SGLC between 2007 and 2011 at Tottori University Hospital, Japan. Operative data (operative time, intraoperative bleeding, and time to drain removal), outcomes (aspiration and changes in nutritional status), and complications with regard to the surgical method were examined. The occurrence of a subcutaneous proximal laryngeal stump fistula was evaluated by videofluoroscopy. Results: The SGLC was performed safely in all patients. Fistulization was observed in only 1 of the patients (2.8%), and major bleeding after surgery was observed in 1 patient (2.8%). The procedure relieved aspiration pneumonia in all patients. Conclusions: We conclude that SGLC is effective for treating and preventing pulmonary aspiration. The incidence of postoperative complications, particularly that of subcutaneous fistulas, was very low. Therefore, this method may be useful for patients in poor condition. [ABSTRACT FROM AUTHOR]