How Is Obstructive Sleep Apnoea (OSA) Diagnosed?

The following examinations may be conducted to diagnose OSA:

  • Physical examination. The doctor may do a physical exam and inquire about your symptoms and medical history. They may also conduct flexible nasendoscopy (study of your throat and nose using a small lighted tube with a camera at the tip) to evaluate the potential sites of narrowing in the upper airway.

  • Polysomnography (PSG). Polysomnography is a lab sleep examination that measures oxygen levels and brain waves to determine the causes of sleep disruption.

  • Home sleep study (HST). This is a self-performed study that is used to diagnose sleep apnoea.

What Is Snoring & Obstructive Sleep Apnoea (OSA)


Snoring is the rattling or snorting noises a person makes during breathing while sleeping.

Obstructive sleep apnoea is associated with interruptions in breathing during sleep, causing the body to receive less oxygen and waking up frequently at night. Obstructive sleep apnoea is caused by an obstruction of the airways, leading to snoring, restlessness and gasping for air during sleep.

Our Specialists

Dr Chin Chao-Wu David

Senior Consultant Ear Nose Throat Surgeon

Dr Eng Soh Ping Elliot

Senior Consultant Ear Nose Throat Surgeon

Dr Leong Jern-Lin

Senior Consultant Ear Nose Throat Surgeon

Dr Mark Hon Wah Ignatius

Senior Consultant Ear Nose Throat Surgeon

Dr Valerie Tay Su-Lin

Senior Consultant Ear Nose Throat Surgeon

Dr Huang Xinyong

Senior Consultant Ear Nose Throat Surgeon

For Singaporeans & Singapore Permanent Residents

Insurance & Medisave Partners

Certain ENT procedures are claimable under Medisave, and the exact amount would depend on the procedure. For more information, please speak to our friendly clinic staff about using your insurance plan, Integrated Shield Plan, or Medisave.

When Should You See An ENT Specialist In Singapore??

  • Any Ear, Nose or Throat symptoms that you are troubled with or concerned of
  • Persistent blocked nose with mouth breathing or snoring

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    Frequently Asked Questions

    Is Snoring & Obstructive Sleep Apnoea (OSA) serious? When should I visit a doctor?

    Snoring is typically not a sign of anything serious. Furthermore, not everyone who snores has obstructive sleep apnea.

    However, you should seek immediate medical attention if your symptoms persist for a prolonged period and if they impede your daily functioning to a great extent. Alternatively, if you have any queries or concerns related to snoring or OSA or if you are unsure if you have one, you should see a doctor as soon as possible as early intervention and diagnosis can increase the treatment success rate.

    What increases the risks of Obstructive Sleep Apnoea (OSA)?
    • Obesity or excess weight
    • Family history of obstructive sleep apnoea
    • Older age
    • Excessive smoking
    • Naturally narrow airways
    • High blood pressure
    • Diabetes
    • Asthma
    How to prevent Snoring & Obstructive Sleep Apnoea (OSA)?
    • Exercise regularly and maintain a healthy weight
    • Avoid sleeping on your back
    • Have adequate sleep
    • Avoid excessive alcohol consumption
    • Drink plenty of water