| Comparative Effects of Laryngeal Mask Airway Insertion and Endotracheal Intubation on Intraocular Pressure during Induction with Propofol. |
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Dae Hyun Jo, Jae Gun Park, Myoung Hee Kim |
1Department of Anesthesiology, College of Medicine, Inha University, Inha General Hospital, Sungnam, Seoul, Korea.
2Pochon CHA Medical School, Seoul, Korea. |
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| Abstract |
BACKGROUND
It is important to control the intraocular pressure (IOP) during ophthalmic surgery. The precise control of IOP is an accepted advantage of general anesthesia.
METHODS
The authors have compared IOP, blood pressure (BP) and heart rate (HR) with the insertion of laryngeal mask airway (LMA) or endotracheal tube (TI) during the induction of propofol. All data were recorded in the operating room upon arrival (Phase 1), just before the LMA or TI (Phase 2), immediately after (Phase 3), and 1 minute (Phase 4) and 3 minutes (Phase 5) after the LMA or TI.
RESULTS
The IOP with the LMA was significantly lower at Phase 3 and Phase 4 than that with the TI. The changes of the IOP during Phases 2, 3, 4 and 5 was insignificant in LMA but significant in TI. The BP with LMA was significantly lower at Phases 3, 4 and 5 but the difference in HR was not significant between LMA and TI.
CONCLUSION
The LMA offers advantages over TI for ophthalmic surgery in respect to the changes in IOP, BP and HR during the induction of propofol. |
| Key Words:
Monitor: intraocular pressure; Airway: laryngeal mask; endotracheal intubation; Anesthetics; propofol |
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