Effect of Transcutaneous Electrical Stimulation on Polysomnographic Parameters in Patients With Obstructive Sleep Apnea

Inclusion Criteria: 1 - Adult patients aged 18 years or older. 2- Male or female patients diagnosed with obstructive sleep apnea by baseline overnight polysomnography. 3- Patients willing to participate in the study and provide written informed consent. Exclusion Criteria: 1. Patients with central sleep apnea or predominantly central sleep-disordered breathing. 2. Patients with significant unstable cardiovascular or respiratory disease that may increase the risk of participation. 3. Patients with implanted electronic devices, such as pacemakers or implantable cardioverter-defibrillators. 4. Patients with skin lesions, infection, irritation, or other abnormalities at the intended electrode application sites. 5. Patients with neurological or neuromuscular disorders that significantly affect upper airway muscle function. 6. Patients with a history of upper airway surgery that substantially alters upper airway anatomy, if this may interfere with study assessment. 7. Patients unable to tolerate electrical stimulation or complete the required polysomnography sessions. 8. Patients who decline to participate or withdraw their informed consent.