CTICasesHypoglossal Nerve Stimulator for Obstructive Sleep Apnea
Imaging findings
A device consisting of a pulse generator, a lead extending to the right neck to stimulate the hypoglossal nerve, and sensing leads projecting over the lower lung fields near the diaphragm in the right hemithorax.
Key takeaways
The hypoglossal nerve stimulator is an interesting device used for obstructive sleep apnea. It senses breathing patterns via chest leads and stimulates the hypoglossal nerve to retract tongue muscles, helping maintain airway patency during sleep. Radiologists should be aware of its appearance and purpose.
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