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Figure 1 | BMC Anesthesiology

Figure 1

From: The effect of changing the sequence of cuff inflation and device fixation with the LMA-Supreme® on device position, ventilatory complications, and airway morbidity: a clinical and fiberscopic study

Figure 1

The opening angle of the glottis was measured on a hardcopy of the photograph taken during endoscopic inspection. A sagittal line was drawn connecting the anterior commissure and the interarytenoid notch (line A). Line B was drawn bisecting line A at a right angle. A tangential line was drawn from the intersection of the sagittal line with the anterior commissure through the intersection of line B with the vocal cord. The angle between lines A and B was measured and doubled to give the opening angle. This method permitted the opening angle to be determined when only one vocal cord was visible. A. Glottis with an opening angle of 26° - ventilation not impaired. B. Glottis with an opening angle of 9° - ventilation impaired.

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BMC Anesthesiology

ISSN: 1471-2253

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