For many patients with obstructive sleep apnea (OSA), CPAP therapy can be difficult to tolerate long term. Masks may feel uncomfortable, sleep can still feel disrupted, and some patients eventually stop using treatment altogether.
A newly published clinical trial called the OSPREY Study is helping expand the conversation around alternative options for patients struggling with moderate to severe sleep apnea.
The study, titled “Proximal Hypoglossal Nerve Stimulation for Obstructive Sleep Apnea in the OSPREY Study,” was recently published in Annals of Internal Medicine and included our own Dr. Jose Barrera as one of the study investigators and contributors.
What Was the OSPREY Study?
The OSPREY Study evaluated a newer form of hypoglossal nerve stimulation called proximal hypoglossal nerve stimulation (pHGNS). Unlike CPAP, which uses pressurized air to keep the airway open, hypoglossal nerve stimulation works by activating muscles of the tongue and upper airway during sleep to help prevent airway collapse.
The trial included 104 patients across 23 U.S. medical centers. All participants had moderate to severe obstructive sleep apnea and were unable to tolerate positive airway pressure therapy.
Researchers compared patients who received active therapy with a control group whose devices remained inactive during the initial study period. The goal was to determine whether this newer stimulation technology could meaningfully improve sleep apnea severity and symptoms.
The Results Were Significant
At seven months, more than 58% of treated patients achieved the study’s primary success endpoint, compared to just 13.5% of patients in the control group.
Researchers also reported:
- Significant reductions in apnea-hypopnea index (AHI)
- Improved oxygen levels during sleep
- Reduced daytime sleepiness
- Better overall sleep-related quality of life
- High treatment adherence rates
- No serious procedure-related adverse events reported during the study period
The median AHI in treated patients improved from severe sleep apnea levels to much milder ranges during the trial.
Patient-reported outcomes also improved substantially. Participants reported feeling less sleepy during the day and experienced measurable improvements in daily functioning and sleep quality.
How Is This Different from Other Sleep Apnea Treatments?
Traditional hypoglossal nerve stimulation systems stimulate smaller distal nerve branches and often require drug-induced sleep endoscopy (DISE) during evaluation. The proximal system evaluated in OSPREY was designed differently. According to the study authors, it may allow broader activation of tongue and airway muscles while simplifying implantation.
The study also noted that DISE was not required for patient selection in this trial.
While CPAP remains the first-line treatment for obstructive sleep apnea, studies like OSPREY are important because they explore additional options for patients who struggle with long-term CPAP use.
Dr. Barrera’s Role in Advanced Sleep Apnea Research
Dr. Jose Barrera participated in the OSPREY Study as part of a national team of investigators evaluating emerging treatment options for obstructive sleep apnea.
As a triple board-certified facial plastic and reconstructive surgeon with expertise in sleep surgery and airway procedures, Dr. Barrera has long been involved in the evaluation and treatment of complex nasal and airway concerns. His participation in large multicenter clinical research studies reflects an ongoing commitment to advancing treatment options for patients dealing with sleep-disordered breathing.
What This Means for Patients
Not every patient with obstructive sleep apnea is a candidate for nerve stimulation therapy, and CPAP continues to help many people successfully manage their condition. However, this study reinforces that alternative treatment approaches continue to evolve for patients who cannot tolerate traditional therapies.
The OSPREY investigators concluded that proximal hypoglossal nerve stimulation demonstrated both safety and clinically meaningful improvements in patients with moderate to severe obstructive sleep apnea.
For patients exploring alternatives to CPAP, a comprehensive evaluation remains the most important first step. Treatment decisions should always be individualized based on anatomy, severity of sleep apnea, prior treatment history, and overall health goals.
Ready to Schedule an Appointment for Sleep Apnea Prevention in San Antonio, TX?
If you’re ready to get your life back and feel completely rested once again, it may be time to reach out for help. To learn more about sleep apnea treatment options or to schedule a consultation with Dr. Jose Barrera in San Antonio, please contact our office at (210) 468-5426 or complete our online contact form. Endormir Sleep and Sinus Institute, a Sleep and Sinus branch of Jose Barrera MD, helps those coming from outside San Antonio and is recognized as a leading practice in Sleep Surgery in Texas.
