What is Obstructive Sleep Apnea (OSA)?
Obstructive Sleep Apnea is a common yet serious sleep disorder in which breathing repeatedly stops and starts during sleep. “Apnea” literally means “without breath.” In OSA, the airway becomes partially or completely blocked during sleep, reducing or stopping airflow despite continued breathing efforts.
Many people with OSA snore loudly and feel exhausted even after a full night’s sleep. Most individuals are unaware of their nighttime awakenings, making the condition easy to overlook.
Who is at Risk?
OSA can affect people of any age, including children, but it is most common in middle-aged adults. Key risk factors include:
- Overweight or obesity, especially with a thick neck circumference
- Male gender (though risk increases in women after menopause)
- Advancing age (particularly over 65)
- Enlarged tonsils or adenoids
- Alcohol consumption in the evening
- Use of sedative medications
- Anatomical issues such as a small jaw (micrognathia), receded jaw (retrognathia), or nasal obstructions
- Sleeping primarily on your back
- Family history of sleep apnea
Common Symptoms
According to clinical guidelines, the presence of two or more of the following features raises suspicion for OSA:
- Loud, habitual snoring
- Witnessed breathing pauses (apneas) or choking/gasping during sleep
- Unrefreshing or fragmented sleep
- Excessive daytime sleepiness or fatigue (different from normal tiredness)
- Morning headaches
- Nocturia (frequent nighttime urination)
- Poor concentration, memory issues, or “brain fog”
- Irritability, mood changes, or depression
- Waking up with a dry mouth or sore throat
In children, symptoms may also include behavioural problems, poor school performance, or bedwetting.
Potential Complications
If left untreated, OSA can lead to significant health issues:
- Daytime fatigue and safety risks — Increased chance of motor vehicle accidents, workplace errors, and reduced quality of life.
- Cardiovascular problems — High blood pressure, heart disease, irregular heart rhythms, stroke, and higher risk of sudden cardiac events.
- Metabolic disorders — Insulin resistance and Type 2 diabetes.
- Metabolic syndrome — Combination of high blood pressure, abnormal cholesterol, elevated blood sugar, and abdominal obesity.
- Mental health impact — Depression, anxiety, irritability, and cognitive decline.
- Surgical and medication complications — Higher risks during and after anaesthesia or major surgery.
Diagnosis
A comprehensive evaluation by an ENT specialist or sleep physician typically includes a detailed history, physical examination (often with Drug-Induced Sleep Endoscopy – DISE), and a sleep study (polysomnography or home sleep apnea test).
Treatment Options
Lifestyle Modifications (first step for many patients)
- Weight loss (even modest reduction can significantly improve symptoms)
- Avoiding alcohol and sedatives before bedtime
- Positional therapy (side sleeping or elevated head position)
- Regular exercise and good sleep hygiene
Continuous Positive Airway Pressure (CPAP) A mask delivers gentle air pressure to keep the airway open. While highly effective, long-term adherence can be challenging for some patients.
Advanced Surgical Solutions For patients who cannot tolerate CPAP or prefer a permanent solution, modern surgical options include:
- Multilevel airway surgery (addressing nose, palate, tongue base, etc.)
- Tonsillectomy and adenoidectomy (especially effective in children)
- Uvulopalatopharyngoplasty (UPPP) and tongue base reduction
Oral Appliance Therapy Custom-fitted mandibular advancement devices that reposition the jaw to maintain airway patency.
