Assessment of the Effect of Hypoglossal Nerve Stimulation Therapy on Upper Airway Collapsibility During Drug-induced Sleep Endoscopy

Condition(s) studied

Investigational drug(s) / intervention(s)

Additional measurements during clinical standard follow-up drug-induced sleep endoscopy (DISE): During standard DISE, type I polysomnography (Alice LDx 6, Philips Respironics) expanded with measurements of Pcrit (Pcrit3000 device, Philips Respironics) and airflow (Pneumotachometer, Hans-Rudolph, USA) will be performed.

Study summary

This clinical trial will evaluate the effect of treatment with hypoglossal nerve stimulation on the underlying mechanisms of obstructive sleep apnea. Several disease mechanism parameters are known to be associated with obstructive sleep apnea. However, currently, only the location of upper airway collapse is routinely examined in clinical practice using sleep endoscopy. Among other parameters, airway collapsibility is a widely studied mechanism. This parameter indicates how easily a patient's upper airway tends to collapse and can be assessed with additional measurements during sleep endoscopy.

The aim of this trial is to investigate the effect of hypoglossal nerve stimulation on collapsibility during sleep endoscopy. This information will provide a better understanding of the physiological mechanisms of hypoglossal nerve stimulation. In the long term, the investigators hope this knowledge will allow for more personalized care by tailoring treatment to the specific needs of each patient.

Eligibility

Primary outcome measure(s)

• ΔPcrit — One year after HNS implantation, during the 1-year follow-up DISE (= DISE at baseline & DISE with HNS)
  Change in pharyngeal critical closing pressure (ΔPcrit), between baseline Pcrit and Pcrit with HNS. Both Pcrit measurements will be performed on the same day, during the 1-year follow-up DISE.

Trial sites (1)

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