The impact of high-frequency jet ventilation on middle ear pressure and postoperative nausea and vomiting

In this study, we aimed to show the impacts of implementing jet ventilation to one group and conventional mechanical ventilation to another group of patients undergoing elective direct laryngoscopy on middle ear pressure and on postoperative nausea and vomiting.Risk group, 40 patients ASA I-II trial was made with direct laryngoscopy. Patients Group JV (high-frequency jet ventilation, which will be held with the direct laryngoscopy patients) and Group NV (endotrakeal intubation to do with the direct laryngoscopy patients) were divided into two groups. The day before, the measurement of MEP patients were examined with an otoscope to affect the external ear canal was evaluated in terms of pathology. Both patients in group 1 min for a period of 1 mg / kg was as remifentanil bolus and induction with 0.2 mg / kg / min infusion was started. 1 mg / kg of 1% lidocaine was applied iv, propofol for induction of anesthesia and then 2 mg / kg, and rocuronium (0.5 mg / kg) was given. Then, in the Group JV, for the high-frequency jet ventilation blade was placed in the mouth, in the Group NV endotrakeal intubation made for conventional mechanical ventilation was started. General anesthesia was maintained with remifentanil and TIVA.Group JV: after induction of general anesthesia mouth opener of direct laryngoscope were placed and YFJV (TwinStream, CARL REINER) started breathing through the set values. (Frequency, 600 breaths / min, P (Pressure): 1bar Inspiratory-expiratoryratio (I: E): 1:1, FiO2(inspired oxygen concentration) :0.8-1).Afte rswitching to the jet ventilation, MAP (mean airway pressure), PIP (peak inspiratory pressure), PEEP (positive end ekspiratuar pressure) values are recorded at the third minute and at five-minute intervals. Group NV: after induction of general anesthesia, patients were intubated with a tube endotraleal number from 6.5 to 7.Ventilation of patients with 8 mL/kg tidal volüm, 80-100 % of total O2 in theair at 4 l/min, and the SS: 10 breaths/min, I:E=1:2, by setting the Standard ventilation, anesthesia was performed with the device. Ventilation of patients with 8 mL/kg tidal volüm, 80-100 % of total O2 in the air at 4 L/min, and the SS: 10 breaths/min, I: E = 1:2, by setting the Standard ventilation, anesthesia was performed with the device. All patients with, MAP, SpO2, ETCO2, therates of HR, MEP values before induction, 1 minute after completion of induction and intubation 3 minutes and then 5-minute intervals were recorded until thethirtieth minute. With the end of surgical procedure residual muscle relaxant effect of 0.015 mg / kg atropine and 0.05 mg / kg neostigmine and was extubated. Postoperative, in both groups with tympanometryright MEP and left MEP, VAS, VDS, and the amount of metoclopramide are recorded at the 5., 15. and 30. minutes.As a result, there was no significant difference between the two groups in terms of MEP.