Objective: To describe our experience with superimposed high-frequency jet ventilation (SHFJV), which does not require any endotracheal tubes or catheters, for performing laryngeal and tracheal surgery.Design: A case series of 500 patients.Setting: A university medical center.Patients: Four hundred sixty adult patients and 40 children in a consecutive sample who required laryngeal or tracheal surgery under SHFJV.Interventions: The SHFJV uses 2 jet streams with different frequencies simultaneously and is applied using a jet laryngoscope. Ventilation was performed with an airoxygen mixture, and intravenous agents were used for anesthesia. Arterial blood gas values were analyzed. Main Outcome Measures:Reported values of oxygenation and ventilation during the application of SHFJV and laryngotracheal surgery.Results: In 497 patients, adequate oxygenation with a mean ± SD PaO 2 of 91.8 ± 22.9 mm Hg and ventilation with a PaCO 2 of 29.7 ± 5.5 mm Hg were achieved using SHFJV. The average duration of the application of ventilation was 27 minutes, and the longest duration was 118 minutes. No complications due to the ventilation technique were observed. Laser surgery was performed in 150 patients.

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