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Korean Journal of Anesthesiology 1995;28(1):91-96.
DOI: https://doi.org/10.4097/kjae.1995.28.1.91   
Total Intravenous Anesthesia for High Frequency Jet Ventilation in Laryngomicrosurgery.
Hae Keum Kil, Won Oak Kim, Soo Jin Han, Won Pyo Hong
1Department of Anesthesiology, Yonsei University College of Medicine, Seoul, Korea.
2Department of Otolaryngology, Yonsei University College of Medicine, Seoul, Korea.
Total intravenous anesthesia(TIVA) is desirable technique for a number of reasons. The first is that it implies all the components of general anesthesia : hypnosis, amnesia, analgesia, and muscle relaxation by combination of several drugs and the lungs are ventilated with oxygen-enriched air. A combination of fentanyl-propofol were used as TIVA for laryngomicrosurgery (LMS) with high frequency jet ventilation(HFJV). 41 patients were studied. Glycopyrrolate was given 1 hour before anesthetic induction. Propofol 2 mg/kg was intravenously administered 1 minute after fentanyl 1.5 ug/kg intravenously injection for induction. Endotracheal intubation was performed after succinylcholine administration with internal diameter 4.0-6.0 mm LASER tube through oral cavity or 8 fr. polyethylene catheter through nasal airway. After then, HFJV was started with frequency 108-120 cycles/minute and driving pressure 2.0-2.5 kg/cm(2). The adequacy of ventilation was evaluated with arterial blood gas analysis. For maintenance a continuous propafol infusion of 10 mg/kg/hour was used for the first 10 minutes, followed by 8 mg/kg/hour for the next 10 minutes and 6 mg/kg/hour, thereafter. Continuous dripping of succinylcholine was used for muscle relaxation. The patients showed relatively stable hemodynamic status during procedure (Fig. 1). Two recovery times were as followed: the interval from cessation of infusion until opening eyes on command(4.90+/-3.41 min), and that until correct response to simple question (5.50+/-3.49 min). There was a correlation between total amount of propofol given to patients and recovery times(P<0.05)(Table 1). Interestingly. a group of patients weighed over 70 kg showed carbon dioxide retension on arterial blood gas analysis(Fig. 2). In conclusion, fentanyl-propofol cobination with muscle relaxant is proper regimen for TIVA in LMS with HFJV. More stable and better recovery are the main reasons. However, carbon dioxide retension should be consider to the patients weighed over 70 kg with the HFJV.
Key Words: Total intravenous anesthesia; Propofol; High frequency jet ventilation; Laryngomicrosurgey


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