Drowsy Dancer wrote:
Can you spell this one out a little bit more for me? I think I get where you're going with this, but I'm not entirely sure I'm following along. Fascinating thread though.
Hey, this is that
In a very small, but interesting study in Laryngoscope 112 February 2002, response to HGNS was measured in 14 subjects. The first 3 are females:
While it may be tempting to conclude that females exhibit a more favorable response to HGNS than men, of additional interest are the non-responders.
However, it was noted:
Optimal placement of the stimulating electrode is essential to achieve anterior tongue displacement because stimulation of immediately adjacent muscles, including the hyoglossus and styloglossus muscles, can produce retrusion of the tongue into the hypopharyngeal airway. Three of our subjects demonstrated modest decreases in the hypopharyngeal airway during stimulation. These findings may represent displacement of the electrode during the study into the mylohyoid or geniohyoid muscle, which lie superficial to the genioglossus muscle, using our percutaneous approach (see Fig. 1). Electrical stimulation of the mylohyoid, which forms the floor of the oral cavity, could elevate and posteriorly displace the tongue. While the geniohyoid muscle exerts an anterior vector of force on the hyoid bone and caudal tongue base,in a few subjects we have noted posterior tilting of the epiglottis during stimulation. Thus, displacement of the electrode into either of these muscles could have resulted in reduction of the hypopharyngeal airway measurement.