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Observation of lung ventilation effects in bronchoscopy with streamlined liner pharynx airway

Objective To compare the effect of the Streamlined liner pharynx airway(SLIPA) pre-and post-ventilation with a randomized auto control design.Methods Twenty five patients with ASAⅠorⅡ,scheduled for internal fixation dislodgment surgery in lower limb under general anesthesia.After the routine intravenous anesthesia induction,the SLIPA were inserted.To connect respirator by a Y-shaped joint after checking the airway seal and location is satisfactory.The mean inspired flow,expired flow,peak inspiratory pressure,airway resistance and airway compliance of five continuous breaths were measured after CMV+ ventilation strategy with 10 ml/kg tidal volume were enforced.Then bronchoscopy were inserted and situated 1cm above the tracheal carina with SLIPA for the guide by the Y-shaped joint.The mean expired flow,inspired flow,peak inspiratory pressure the mean airway resistance and airway compliance of five continuous breaths were measured again.Results Adequate ventilation were obtained in all patients pre-and post-insertion of SLIPA.The mean expired flow,inspired flow,peak inspiratory pressure,airway resistance and airway compliance did not show significant difference.Conclusion SLIPA is safe and effective ventilation that can be used in bronchoscopy for long time.