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. 2017 Sep 15;196(6):790-792.
doi: 10.1164/rccm.201612-2521LE.

Hyoid Arch Displacement with Hypoglossal Nerve Stimulation

Tarek ElShebiny  1 , Divya Venkat  2 , Kingman Strohl  3 , Mark G Hans  1 , Aurelio Alonso  4 , Juan Martin Palomo  1
Affiliations

Hyoid Arch Displacement with Hypoglossal Nerve Stimulation

Tarek ElShebiny et al. Am J Respir Crit Care Med. .
No abstract available

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Figures

Figure 1.
Figure 1.
Three-dimensional rendering images of the upper airway with cone beam computed tomography for one patient. The segmented airway is colored yellow. The arrow labeled with an H points to the hyoid bone. The stimulation cuff electrode (on the right hypoglossal nerve) is represented by the three linear, yellow dots above the hyoid. Top left: Resting breathing. Sagittal view during a cycle of resting breathing showing an upper airway volume (yellow area) of 29.5 cm3. Top right: Stimulation. Sagittal view during stimulation of the hypoglossal nerve with an increase in upper airway volume (43.7 cm3, +48%) from baseline. The hyoid bone (H) and the submental soft tissue (haziness resulting from movement artifact) move anteriorly during stimulation and produce an outward bulge in submental contour. Bottom left: Application of negative pressure (−2 cm H2O) by facemask, shown as a shadow on the face. Sagittal view during application of −2 cm H2O with a decrease in upper airway volume (20.9 cm3, –29%). The velopharynx is completely closed, explaining the lack of yellow in that region. The position of the hyoid and the cuff electrode are unchanged. Bottom right: Application of positive pressure (+10 cm H2O) by facemask. Sagittal view during application of +10 cm H2O with an increase in airway volume (37.8 cm3, +28%). The position of the hyoid and the cuff electrode are unchanged.
See this image and copyright information in PMC

References

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