The purpose of this study is to make a comparison between total intravenous anesthesia (TIVA) and inhalational anesthesia in microlaryngosurgery.
Fifty-eight patients undergoing microlaryngosurgery were studied. The patients were assigned to two groups. Group GOT received isoflurane anesthesia and normal intubation. Group TIVA+HFJV received TIVA with propofol and ventilated with high frequency jet ventilation (HFJV). MERA HFO JET VENTILATOR AE-20 was used for HFJV. The 10Fr jet ventilation tube was nasally intubated. The HFJV set on 1.5or2kg/cm
2 of pressure and of on 2, 5 and 10Hz of frequencies. We evaluated the time for recovery, hemodynamic change during the induction, at intubation and beginning of the surgery. PaO
2 and PaCO
2 were also measured at 10 and 20min after HFJV.
The time for recovery was significantly shorter and there were less hemodynamic changes in Group TIVA+HFJV. Oxygenation was adequate but significant increase in PaCO
2 was observed with 10Hz at 10 and 20min after HFJV.
We concluded that TIVA combined with HFJV is an excellent method of anesthetic management for microlaryngosurgery.
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