Sleep apnea is a serious sleep disorder in which breathing repeatedly stops and starts. Sleep apnea causes are either airway collapse (obstructive sleep apnea) or failure of the brain’s respiratory control centres (central sleep apnea). This prevents restful sleep and oxygenation, leading to loud snoring, gasping and excessive daytime sleepiness. If untreated, potential heart disease and heart failure issues can arise. Thankfully, sleep medicine specialists can help diagnose and treat this condition.
Sleep apnea is characterised by loud snoring, chronic snoring, choking or gasping, and unrefreshing sleep. Breathing pauses, often lasting 10 seconds or more, occur frequently, causing fragmented sleep, sleep disruption, and repeated oxygen dips affecting blood oxygen levels. This strains the cardiovascular system and increases the risk of cardiovascular disease, leading to excessive daytime sleepiness and exhaustion.
Treating sleep apnea with an accurate diagnosis and treatment plan can significantly improve the lives of the patient and their partner, who no longer have to endure breathing interruptions nightly. Understanding the causes and risk factors of sleep apnea is key to effective prevention and treatment.
Sleep apnea is a sleep disorder characterised by repeated interruptions in breathing during sleep. There are three main types of sleep apnea, differentiated by their cause:
Obstructive sleep apnea (OSA)Â is the most common type of sleep apnea, in which the muscles at the back of the throat relax too much, blocking the airway. Symptoms include loud snoring, gasping for air during sleep and daytime fatigue.
Central sleep apnea (CSA) involves the brain not sending proper signals to the muscles that control breathing. It is more common in individuals with certain medical conditions, like a history of heart failure or strokes. This results in periodic lapses in breathing effort.
Also known as treatment-emergent central sleep apnea, complex sleep apnea (CompSA) occurs when someone being treated for OSA develops central sleep apnea symptoms. It requires adjustments in treatment to address both obstructive and central components of the disease.
Barrie Tan ENT Head & Neck Surgery provides comprehensive care for all types of sleep apnea.
If you believe you or a loved one has sleep apnea, contact us today so that we can start working on a plan towards better sleep.
Common symptoms of sleep apnea include the following. If you are so sleepy that you have microsleeps, nod off while driving, or fall asleep unexpectedly, treat it as an urgent situation.Â
Sleep apnea stems from a mix of anatomical, airway inflammatory, and physiological issues, not a single cause. Understanding the reasons for sleep apnea helps guide treatment.
Obstructive Sleep Apnea (OSA) is due to the upper airway narrowing or collapse. This is often caused by excess soft tissue, including the soft palate, poor upper airway muscle tone, and poor throat muscle tone during sleep, or by structural factors that limit space. Obesity or sudden weight gain can contribute, so many patients can benefit from weight loss.
Common risk factors and contributors include:
Central sleep apnea is less common and is often associated with an underlying medical condition.
Untreated sleep apnea increases health risks by causing repeated oxygen drops, affecting blood oxygen levels and stress, harming the heart, blood vessels, and metabolism. This can lead to serious health complications and cardiovascular disease.
Risk factors include high blood pressure (hypertension), abnormal heart rhythms (like atrial fibrillation), heart damage, heart failure, stroke, sudden death, and sudden cardiac death. Sleep apnea is also associated with nonalcoholic fatty liver disease. Early treatment can improve high blood pressure and reduce heart strain, but outcomes vary. What matters is timely action.
There are also safety and healthcare implications. Daytime sleepiness increases the risk of road and workplace accidents. Undiagnosed sleep apnea can increase anaesthetic and post-operative risk, so it matters before surgery or sedation. Sleep medicine consultation is recommended.
See a sleep specialist or a sleep ENT specialist if snoring is accompanied by breathing pauses, choking, or significant daytime sleepiness, as these may indicate treatable sleep-disordered breathing. Seeing a sleep specialist is the only sure way for how to diagnose sleep apnea.
Do not delay seeing a sleep specialist if a partner witnesses pauses, gasping, or choking. It’s also important to see a specialist if you have hard-to-control high blood pressure, or if you find driving unsafe and fall asleep at the wheel. If planning surgery and suspecting sleep apnea syndrome, flag it early for safer perioperative planning.
Seek emergency care immediately for symptoms suggesting a heart attack, stroke, heart failure, or severe breathing difficulty, as these are emergencies separate from sleep apnea.
Sleep apnea is diagnosed by a doctor’s evaluation and a sleep study (polysomnography), which monitors brain, heart, and lung activity, breathing, and oxygen during sleep, either in a lab or at home.
Diagnosis involves a medical history review and a physical exam of the mouth, neck, and throat to assess factors such as a large tongue or a large neck. A sleep diary may track patterns and daytime sleepiness. Other sleep apnea tests in Singapore, such as blood or thyroid checks, can rule out other conditions.
Polysomnography (PSG) is the main diagnostic tool performed in a sleep centre (in-lab/Level 1) or at home. Level 1, the gold standard, monitors overnight: brain waves (EEG), heart rate (ECG), breathing (airflow, chest/abdomen movement), blood oxygen (pulse oximetry), and arm/leg movements.
The Home Sleep Apnea Test (HSAT) is another option that monitors breathing pauses, oxygen levels, and heart rate and is often used for straightforward cases.
A Split-Night Study monitors you for half the night; if apnea is detected, treatment (such as CPAP) may begin in the second half.
Your Apnea-Hypopnea Index (AHI) score, based on breathing pauses per hour, indicates the severity: mild (5-14), moderate (15-29), severe (30+). Early diagnosis of sleep apnea leads to better outcomes.
Effective sleep apnea treatment requires matching the intervention to the cause of airway collapse, your lifestyle, and what you can consistently use. Sleep apnea treatment in Singapore offers multiple options, tailored to the city’s unique environment, including its humidity and heat.
While many search for sleep apnea cures and sleep apnea remedies, no single solution works for everyone. The risk can be managed through structured sleep apnea management to restore restful sleep quality and protect long-term health. Learning how to prevent sleep apnea recurrence is part of ongoing care.
Lifestyle Changes
Initial sleep apnea treatment strategies focus on lifestyle changes: weight loss, exercise, limiting evening alcohol intake, reviewing sedative use, and positional therapy for back sleepers.
Non-Surgical Management
Addressing nasal issues (allergies, structural abnormalities, and nasal obstruction) can also improve tolerance to sleep apnea devices and CPAP therapy. Good sleep hygiene, such as consistent timing, reduced late-night screen time, and management of chronic conditions (e.g., hypertension and diabetes), can support primary therapy and lead to better outcomes. These lifestyle changes form the foundation of treatment.
CPAP and Related PAP Devices
Continuous Positive Airway Pressure (CPAP) is the most effective standard treatment for moderate to severe obstructive sleep apnea, maintaining a patent upper airway.
Successful CPAP use relies on practical details: the correct mask (nasal, oral, nasal pillows, or full-face), heated humidification, ramp settings, leak management, and desensitisation (e.g., wearing the mask before sleep). Some patients use Automatic Positive Airway Pressure (APAP), which automatically adjusts positive airway pressure.
Alternative positive airway pressure strategies and individual follow-up with device data review are needed for complex breathing patterns that can emerge during treatment.
Myofunctional Therapy
Myofunctional therapy focuses on improving oral-motor function. Through targeted exercises, it strengthens the tongue, jaw, and throat muscles, thereby helping to maintain airway patency during sleep. This reduction in airway obstruction can greatly reduce the frequency and severity of sleep apnea episodes.
Oral Appliances and Sleep Apnea without CPAP
For mild-to-moderate obstructive sleep apnea, or for those seeking a CPAP alternative or managing sleep apnea without CPAP, a custom-fitted mandibular advancement device (MAD) is a viable option. Oral appliances and oral appliance therapy require fitting and adjustment by a dentist, as well as monitoring for jaw issues or bite changes.
Positional Therapy
This therapy involves using specialised devices or pillows to discourage back sleeping, a position that can worsen sleep apnea symptoms. Side sleeping, a simple yet effective technique, helps maintain airway patency and improves breathing during sleep.
Other Non-Surgical Therapies Used in Selected Cases
Depending on anatomy and tolerance, additional approaches may benefit some patients as part of their treatment plan. These can include neuromuscular electrical stimulation to reduce tongue or upper airway muscle collapse during sleep in select individuals. The optimal choice depends on your obstruction pattern, test results, and long-term practicality.
Nasal surgery (septoplasty, turbinate reduction) for nasal airflow and CPAP tolerance, nasal surgery can address upper airway issues.
Adenoidectomy is the surgical removal of the adenoids, lymphoid tissue at the back of the nasal cavity. Removing enlarged adenoids, which can obstruct the upper respiratory tract, improves breathing and alleviates sleep apnea symptoms.
Treatments are generally safe, but involve trade-offs between benefit, comfort, and risk as part of your treatment plan.
CPAP side effects (dryness, mask leak, nasal congestion) are usually manageable with mask changes, humidification, and adjustments. Oral appliances may cause monitored jaw soreness or bite changes.
Surgery carries risks like bleeding, infection, sore throat, and pain, with recovery varying by procedure. A crucial safety measure is perioperative planning: if you have sleep apnea, inform your surgeon and anaesthetist beforehand, and you might need to bring your CPAP to the hospital for restful sleep and a safer recovery.
Enlarged tonsils/adenoids often cause paediatric sleep apnea as a sleep disorder, impacting behaviour, learning, and growth.
Daytime symptoms may include hyperactivity, irritability, or poor concentration, not just daytime sleepiness. Clues are persistent chronic snoring, restless sleep with no normal sleep patterns, mouth breathing, bedwetting, or unusual sleep positions.
Assessment may involve an ENT exam and a sleep study. An adenotonsillectomy, when appropriate, can significantly improve restful sleep and daytime function for children with this sleep disorder. Sleep-disordered breathing in children requires prompt attention before long-term problems develop.
Dr Barrie Tan focuses on careful upper airway assessment to find the cause of your sleep events. Our sleep medicine approach includes options such as nasal optimisation through nasal surgery, sleep apnea machine guidance (including CPAP devices), and tailored surgery as part of your treatment plan. We also coordinate referrals for dental devices and oral appliances, and offer sleep study services and home sleep apnea testing.
The goal is simple: clearer breathing, restful sleep, and reliable daytime energy for life in Singapore. Whether you need help with mild obstructive sleep apnea or severe obstructive sleep apnea, our clinical sleep medicine team can help.
Don’t let sleep apnea cause years of low energy and broken sleep. A clear diagnosis and treatment plan, supported by a proper sleep study, can improve your safety, focus, and long-term health by addressing health complications early.
Contact Barrie Tan ENT Head and Neck Surgery at Gleneagles Hospital, Singapore, for a sleep apnea test, and begin your path to better sleep.
Sleep apnea can run in families because airway anatomy, jaw structure, and body weight patterns can be inherited. However, lifestyle factors and treatable nasal or throat issues still matter.
MBBS, MRCS (Edinburgh), MMed (Otorhinolaryngology), FAMS
Dr Barrie Tan is an ENT specialist at Gleneagles Hospital, Singapore, with more than 20 years of clinical and surgical experience. He previously served as Head of ENT and Director of the Centre for Hearing and Ear Implants at Singapore General Hospital. The information provided is not intended as medical advice. More about our medical experts.
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