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The McGrath MAC enhanced direct laryngoscope is a combination direct and video laryngoscope in a compact, battery-powered device that uses disposable standard geometry curved Macintosh blades and has an adjustable LED screen (Figs. 22.54, 22.55, 22.56, 22.57). The King Vision, the iView, and the Storz C-MAC PM (pocket monitor) are additional versions of portable handheld video laryngoscopes currently available commercially.

FIGURE 22.54

McGrath MAC Enhanced Direct Laryngoscope. Compact video laryngoscope system shown here with a Mac 3 disposable blade. (Photo contributor: Lawrence B. Stack, MD.)

FIGURE 22.55

McGrath MAC EDL. Cord visualization using the McGrath MAC, which can also be used as a direct laryngoscope. (Photo contributor: Lawrence B. Stack, MD.)

FIGURE 22.56

McGrath MAC EDL. Vocal cord visualization and ETT delivery are demonstrated here. (Photo contributor: Lawrence B. Stack, MD.)


King Vision Video Laryngoscope. The King Vision laryngoscope is a disposable, battery-powered video laryngoscope with robust chip technology and a high blade angulation. (Photo contributor: Lawrence B. Stack, MD.)


i-View Video Laryngoscope. The i-View is a single use, fully disposable video laryngoscope available in standard geometry Macintosh design. (Photo contributor: Lawrence B. Stack, MD.)


Storz C-MAC PM. The Storz C-MAC Pocket Monitor is a portable video laryngoscope that offers both disposable and nondisposable versions combined with high-contrast imaging and compact design. The device can be configured for both adult and pediatric use. (Photo contributor: Lawrence B. Stack, MD.)


The disposable plastic Macintosh blade is placed onto the McGrath MAC EDL, and the device is powered on. The blade is inserted just to the right of midline of the tongue with the handle pointing toward the feet. As the tip of the blade advances downward along the tongue base and into vallecula, the tongue is swept slightly to the left to increase the amount of workspace. When fully inserted into the vallecula, the angle of the handle is now approximately 40 degrees from horizontal with lifting forces directed upward and forward. At any time, the laryngoscopist can switch from a standard direct laryngoscopy to a video laryngoscopy; however, once changed to video laryngoscopy, it is best not to switch back and forth from video to direct laryngoscopy.

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