
What is Hypoglossal Nerve Stimulation?
A mask-free way to treat sleep apnea for people who struggle with CPAP.
Hypoglossal Nerve Stimulation
HGNS stands for Hypoglossal Nerve Stimulation. It gently stimulates the nerve that controls your tongue to help keep your airway open while you sleep.
Unlike CPAP, which pushes air through a mask, HGNS works inside your body. No mask, no tubes, no air pressure.

HGNS vs CPAP
CPAP
CPAP uses a machine to push air through a mask over your nose or mouth. It keeps the airway open with air pressure. You need to set it up each night and wear the mask while you sleep.
HGNS
HGNS works inside your body. It gently stimulates the nerve that controls your tongue to keep your airway open while you sleep. No mask, no tubes, no air pressure.
Who May Be Suitable
- Diagnosed with obstructive sleep apnea
- Struggling with or unable to tolerate CPAP
- Completed a sleep study
- Meets doctor-assessed clinical criteria
Who May Not Be Suitable
HGNS isn't for everyone. Some health conditions, body types, or types of sleep apnea may mean it's not right for you. Your doctor will do a full check to see if it's a good fit.
Talk to a qualified doctor to find out what's best for you.
The Path to Treatment
A simple, guided process with your healthcare team.
Consultation
Sleep Study Review
Airway Assessment
Suitability Review
Treatment Planning
Please Note
HGNS isn't for everyone. A doctor will need to check your health, sleep study, and medical history. This page is for learning only and isn't medical advice.
Want to Know More?
See the hospitals and doctors in Singapore who offer HGNS.
Find a Doctor & Hospital