Anesthesia, General Clinical Trial
Official title:
Comparison of the Mcgrath Videolaryngoscope With the Macintosh Laryngoscope for Orotracheal Intubation in Patients With Manual In-line Stabilization
Video laryngoscopy provides easily a good laryngeal view compared to direct laryngoscopy. It
is particularly, useful in patients with anticipated difficult intubation, and also widely
used for educational purposes. Among video laryngoscopy, Mcgrath is a recently-developed,
portable video laryngoscopy with a liquid crystal display (LCD) monitor and disposable curved
blade.
Mcgrath is known to provide excellent laryngeal visibility even in case of
anticipated-difficult and anticipated-unsuccessful intubation as well as normal airway
management. However, compared with direct laryngoscopy, the success rate of intubation and
the time required for anticipated difficult intubation have been reported conflicting results
in previous studies. The aim of this study was to compare the intubation success rate, the
intubation time and the ease of use with Mcgrath video laryngoscopy and direct laryngoscopy
during intubation.
1. In the operating room, all patients are monitored with an electrocardiograph,
noninvasive blood pressure, pulse oximeter, capnograph and Bispectral index (BIS)
monitor. After pre-oxygenation with 100% oxygen for 1 minute, intravenous anesthesia
(TIVA) with propofol and remifentanyl is administrated and followed by rocuronium
(0.6mg/kg). When patients are lost their consciousness, manual mask ventilation is
proceeded with 100% oxygen for 2 minutes.
2. Transoral endotracheal intubation is performed using Mcgrath videolaryngoscope (Group
ML) and direct laryngoscope (Group DL) using manual in-line stabilization. At this time,
the time required for intubation is measure by other medical personnel not engaged in
this research.
3. The anesthesiologist assesses Cormack Lehane laryngeal visual field,external laryngeal
manipulation, intubation difficulty scales (IDS) and the difficulty of intubation.
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