If your partner nudges you at night because you’re snoring, gasping, or suddenly silent, that’s a red flag, not just a noisy habit. Obstructive sleep apnoea (OSA) repeatedly blocks your airway while you sleep, splintering your rest into hundreds of micro-awakenings and leaving you foggy the next day.
It’s common, too: roughly 1 in 4 Australian men and 1 in 10 women live with OSA (Better Health Victoria, 2021), and many don’t realise it. The upside? With the correct diagnosis and treatment, sleep can once again become deep, quiet, and genuinely restorative.
Here’s what drives OSA, and how clinicians identify it and get it under control.
What Is Sleep Apnoea?
Think of sleep apnoea as your throat playing a game of stop-and-go with your breathing. While you sleep, the muscles in your throat relax (a completely normal process), but sometimes they relax so much that your airway becomes blocked or severely narrowed.
When this happens, you literally stop breathing for 10 seconds or more. Your brain notices the problem and jolts you awake just enough to get your breathing going again. You probably won’t remember waking up, but it can happen dozens or even hundreds of times each night.
That’s why you wake up exhausted; your sleep keeps getting interrupted, even though you don’t realise it.
Sleep Apnoea vs Regular Snoring
Regular snoring occurs when your airway gets partially blocked, creating that familiar rumbling sound. With sleep apnoea, your airway gets repeatedly, completely, or almost completely blocked, greatly restricting airflow or stopping it entirely. That’s when the real problems start.
Why Do Some People Get Sleep Apnoea?
Several factors can increase your risk of developing sleep apnoea. Often, it’s a combination of things rather than just one cause.
Your Body’s Structure
Some individuals naturally have airways that are more prone to collapse.
- Narrow throat or airway: If you naturally have a smaller throat opening, there’s less room for air to flow through.
- Jaw position: A small lower jaw or chin that sits further back can cause your airway to become crowded.
- Enlarged tonsils: This condition is particularly common in children, but adults can also experience it.
- Tongue size: A larger tongue takes up more space in your mouth.
- Nose problems: A deviated septum or chronic stuffiness can force you to breathe through your mouth, worsening sleep apnoea.
Body Weight and Neck Size
Carrying extra weight, especially around your neck, significantly increases your risk of sleep apnoea. Fat deposits around your upper airway can more easily squeeze it shut when your muscles relax during sleep.
Doctors often measure neck circumference as a quick risk assessment – neck circumference over 43cm in men or 38cm in women is a cause for concern for sleep apnoea.
Getting Older
As we get older:
- Throat muscles lose their strength and tone
- Sleep quality naturally decreases
- We’re more prone to weight gain
Sleep apnoea becomes much more common after the age of 40, although younger people can also develop it.
Lifestyle Factors That Make It Worse
- Sleeping position: Back sleeping is typically the worst position for sleep apnoea. Gravity pulls your tongue and soft palate backwards, making blockages more likely.
- Alcohol: Even a glass of wine with dinner can relax your throat muscles more than usual, worsening sleep apnoea.
- Smoking: Creates inflammation and swelling in your upper airways, and affects how well you sleep overall.
- Gender differences: Men are 2-3 times more likely to have sleep apnoea (Mayo Clinic, 2023) though the gap closes after women go through menopause due to hormonal changes.
How Do You Know If You Have Sleep Apnoea?
Sleep apnoea symptoms appear both at night and during the day. Here’s what to watch for:
What Happens at Night
- Loud snoring with gaps: Your partner might notice you snore loudly, then suddenly go quiet (that’s when you stop breathing), followed by gasping or choking sounds as you start breathing again.
- Tossing and turning: Restless sleep with lots of movement.
- Night sweats: Your body works overtime trying to breathe.
- Getting up to pee frequently: Sleep apnoea affects hormones that regulate your kidneys and bladder.
How It Affects Your Days
- Constantly tired: The biggest complaint. You feel exhausted even after 8+ hours in bed.
- Morning headaches often fade as the day progresses.
- Trouble concentrating: Brain fog, memory problems, difficulty focusing at work.
- Mood changes: Irritability, feeling down, increased stress levels.
- Dangerous sleepiness: Nodding off while driving, watching TV, or in meetings.
Why Sleep Apnoea Is Serious If Left Untreated
Beyond feeling rubbish every day, untreated sleep apnoea can lead to serious health problems:
Heart and Blood Pressure Issues
Those repeated drops in oxygen put massive stress on your cardiovascular system. Many people with untreated sleep apnoea develop high blood pressure, and some research suggests it may increase heart disease and stroke risk.
Diabetes Risk
Sleep apnoea affects how your body processes sugar and can contribute to insulin resistance, potentially increasing type 2 diabetes risk.
Accident Risk
Daytime sleepiness is dangerous. Studies show people with untreated sleep apnoea have between 1.21 and 4.89 increased risk for crash than people without it (Obstructive Sleep Apnea and Risk of Motor Vehicle Crash: Systematic Review and Meta-Analysis, 2009). That’s a serious safety issue for you and everyone else on the road.
Getting Diagnosed: What to Expect
If you suspect you might have sleep apnoea, the best first step is to see your GP. They will review your symptoms and may refer you to a specialist sleep clinic such as ours for further testing and support.
Sleep Study Options Available
Manse Medical offers several testing approaches:
At-Home Sleep Tests
What it involves: You take portable equipment home and sleep in your own bed while it monitors your breathing, oxygen levels, and heart rate.
Best for: Individuals likely to have moderate to severe sleep apnoea without other complex medical issues.
Pros: Convenient, sleep in familiar surroundings, less expensive.
In-Lab Sleep Studies
What it involves: You spend the night at a sleep clinic while comprehensive equipment monitors everything – brain waves, breathing, heart rhythm, oxygen levels, and body movements.
Best for: Complex cases, when other sleep disorders are suspected, or when home tests aren’t suitable.
Pros: Most detailed information, technicians available if problems arise.
CPAP Pressure Studies
What it involves: Once you’re diagnosed, this fine-tunes your CPAP machine settings and mask fit.
Daytime Sleepiness Tests
What it involves: Tests like the Multiple Sleep Latency Test measure how quickly you fall asleep during the day.
Best for: People in safety-critical jobs (truck drivers, pilots) or when excessive sleepiness is the main concern.
Treatment Options
The good news is that sleep apnoea is very treatable. Most people see significant improvement once they find the right approach.
CPAP Therapy: The Most Effective Treatment
How it works: CPAP (Continuous Positive Airway Pressure) machines deliver a steady stream of air through a mask, keeping your airway open all night.
Why it works so well: It eliminates the breathing stops, improves sleep quality dramatically, and reduces health risks.
Modern CPAP perks:
- Much quieter than older machines
- Various mask styles to suit your face and sleeping preferences
- Machines track your usage and can adjust pressure automatically
- Many people notice improvement within days
Getting started: Proper mask fitting and pressure settings are crucial. Sleep clinics offer education, ongoing support, and adjustments to help you achieve success.
When CPAP Isn’t Right for You
Oral Appliances (Dental Devices)
How they work: Custom-fitted devices that slightly push your lower jaw forward, keeping your airway open.
Suitable for: Mild to moderate sleep apnoea, people who can’t tolerate CPAP, and those with healthy teeth and gums.
Process: Work with a dentist experienced in sleep medicine to ensure a proper fit.
Lifestyle Changes That Help
While rarely enough on their own for moderate to severe sleep apnoea, these changes can make a real difference:
- Weight loss: Even losing 10% of your body weight can significantly improve sleep apnoea in many people.
- Sleep position: Side sleeping instead of back sleeping. Special pillows or devices can help you stay in a comfortable position on your side.
- Alcohol limits: Especially avoid drinking close to bedtime.
- Nasal breathing: Treat congestion by considering nasal strips or consulting a healthcare professional about potential nasal surgery if you have structural issues.
- Sleep schedule: Regular bedtimes and wake times improve overall sleep quality.
If you suspect you may have sleep apnoea, it is important not to ignore it. This condition typically does not improve on its own, and untreated symptoms can significantly impact both health and quality of life. Your GP is the best first step. They can discuss your symptoms and, if needed, refer you for further assessment and treatment.
Manse Medical provides respiratory and sleep care, including both in-lab and home sleep studies.
You can book an appointment online or call 1300 626 730.
Important: This information helps you understand sleep apnoea, but doesn’t replace professional medical advice. Always talk to qualified healthcare providers about your specific situation and health concerns.
FAQs
1. How do I know if it’s sleep apnoea or just snoring?
Sleep apnoea involves complete stops in breathing, not just noise. If someone notices you stop breathing, gasp, or choke during sleep, that suggests apnoea rather than simple snoring.
2. What’s the difference between home and lab sleep tests?
Home tests are convenient and monitor breathing and oxygen in your bedroom. Lab tests are more comprehensive, monitoring brain activity and other factors. Your doctor will recommend the best course of action for your situation.
3. How quickly does CPAP treatment work?
Many people notice immediate improvement in how refreshed they feel. Full benefits for daytime alertness and health improvements may take weeks to months.
4. Will I need to use CPAP forever?
For most people, yes. Sleep apnoea is an ongoing condition. However, significant weight loss or other changes sometimes reduce severity enough that treatment can be adjusted.
5. Do I need a referral for a sleep study?
Yes, in Australia, you typically need a GP referral for sleep studies. This ensures you get the right test and proper follow-up care.
