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Sleep apnea is a condition that causes short interruptions in breathing while sleeping. It affects around 936 million adults worldwide.1
Leaving sleep apnea untreated can be dangerous. Because it starves the body of oxygen, the condition can lead to severe health problems, including high blood pressure, heart disease, and stroke.
In this article, we cover the different types of sleep apnea, its causes, and possible treatment options.
The three most common sleep apnea symptoms are:
These 3 symptoms aren’t the only effects sleep apnea patients notice. Some people also experience:
Children with sleep apnea may have trouble concentrating in school, experience bedwetting, or have worsening asthma symptoms.
The cause of sleep apnea depends on the type a person has. For example, the causes of OSA and CSA will vary. Additionally, not every instance of sleep apnea stems from the same root cause.
Causes of OSA include:
Meanwhile, potential causes of CSA are:
Mixed sleep apnea syndrome may result from a mixture of the causes of OSA and CSA.
Anyone may develop sleep apnea, but certain risk factors make a person more prone to it. These factors include:
There are three main types of sleep apnea, which have different causes and complications:2
Obstructive sleep apnea occurs when your airway becomes temporarily blocked, or obstructed, during sleep. It’s the most common type of sleep apnea.
These obstructions can happen when the muscles of the throat relax, or the tongue falls backward to block the throat.
Though less common than OSA, central sleep apnea can have equally severe consequences.3
Central sleep apnea (CSA) occurs when a person’s brain has trouble sending signals to the muscles that control breathing while asleep. This miscommunication results in pauses in breathing, even though the airway remains clear.
Mixed sleep apnea syndrome, also called complex sleep apnea, is a blend of OSA and CSA.
People with mixed sleep apnea syndrome typically have the initial symptoms of obstructive sleep apnea. However, after receiving treatment for OSA, symptoms of central sleep apnea may become more noticeable.
Because of its overlapping symptoms, mixed sleep apnea syndrome can be the most challenging of the types to diagnose and treat.
Treatment for sleep apnea depends on the type and severity of the condition. Common treatment options for sleep apnea include:
Using a CPAP (continuous positive airway pressure) machine is the first-line treatment for OSA. This treatment method involves wearing a specialized mask that fits over the nose and mouth while you sleep. The mask attaches to a machine that provides constant air pressure and keeps your airway open.8
Many people with sleep apnea notice immediate improvements when they start using a CPAP machine. CPAP therapy can improve sleep quality and reduce or eliminate snoring.
However, they can also be uncomfortable. Some people may experience side effects such as a congested or runny nose, dry mouth, or nosebleeds. Approximately 50% of users become nonadherent over time or may refuse treatment.8
For people who don’t like the standard CPAP machine, doctors may suggest using a different device, like an auto-CPAP machine. It’s a device that automatically adjusts the pressure as you sleep.
Alternatively, bilevel positive airway pressure (BiPAP) machines use two air pressure settings that provide more pressure on inhalation and less on exhalation.
This airflow device has a built-in computer that learns and stores your normal breathing pattern. While you sleep, the machine uses pressure to normalize your breathing and prevent breathing interruptions.
ASV might be more effective than other positive airway pressure devices in treating complex sleep apnea. However, ASV is not a suitable option for people with predominantly CSA and/or advanced heart failure.5
Dentists can make custom-fit oral appliances to wear in your mouth while sleeping. Although CPAP machines are more effective, some people with sleep apnea find oral devices easier to use.
There are two primary types and some hybrid devices that have the features of both:
You'll need to follow up with your dentist regularly when using these devices to ensure the fit remains optimal.
The US Food and Drug Administration (FDA) has also recently approved an appliance that uses electrical stimulation on the tongue to prevent it from collapsing backward during sleep. It must be worn for 20 minutes daily for 6 weeks to see results.9
RME is an effective orthodontic treatment for OSA, primarily for children. It's a technique used to widen or expand the upper jaw if it's too narrow. This enlarges the size of the nasal cavity and can substantially increase the airflow through the nose.
The procedure involves placing a fixed metal appliance on the upper teeth. The metal framework attaches to metal bands or a plastic splint cemented to the back teeth. In the parts that run across the palate, there's an expansion screw that gradually widens the upper jaw.
RME is more effective in children since the bone is softer than in older people.
The aim of orofacial therapy is to increase and strengthen muscle tone, endurance, and movement. It consists of specific exercises for the facial muscles.
Training the muscles decreases the likelihood of airway collapse and improves sleep quality. Studies also found that orofacial therapy helps adherence to CPAP treatment.
Using supplemental oxygen while you sleep may help if you have CSA. It can also help people who don't prefer CPAP machines.
Supplemental oxygen can prevent hypoxemia or low oxygen levels. However, it doesn't prevent obstructive events or improve daytime fatigue.10
Uvulopalatopharyngoplasty (UPPP) is one of the most common OSA surgical options. It’s an invasive procedure that involves removing soft tissue, including the tonsils, uvula, and part of the soft palate, to enlarge the airways.
Alternatively, doctors can use radiofrequency ablation to shrink the tissues at the rear of the mouth instead of removing them. This avoids the risk of major surgery and has similar benefits to UPPP.
Doctors may not always recommend UPPP to treat sleep apnea, as it doesn't consistently help. It primarily benefits people with enlarged tonsils and a relatively normal palate.
Maximum mandibular advancement surgery (MMA) is successful in 75 to 100% of cases. It involves moving the upper jaw (maxilla) and lower jaw (mandible) forward, enlarging the airways, and reducing airflow resistance.8
Many experts now consider MMA the gold standard in surgical orthodontic treatment for OSA.
However, the surgery is not without risks. Some people experience temporary hearing changes and temporary or permanent facial numbness. The jaw can also return to its original position following surgery.
In this procedure, a surgeon inserts a small electrical stimulation device into the chest wall. The device stimulates the hypoglossal nerve that controls muscles in the tongue. The stimulation rhythm synchronizes with a person's breathing to relieve upper airway constriction.
This approach doesn't require permanent alteration of the airway tissues. Research also shows that it's effective and can decrease OSA symptom scores by 68% following 1 year of use.11
Treating any type of sleep apnea is essential to getting a full night’s sleep and avoiding severe health complications that may arise as a result. Left untreated, sleep apnea can lead to a host of issues, including:
Early diagnosis and proactive treatment can alleviate symptoms and prevent serious complications from developing. Treating sleep apnea can improve your quality of life and may even extend your life expectancy.
If you have the symptoms of sleep apnea, contact your doctor immediately for evaluation and diagnosis.
A sleep specialist or sleep medicine doctor diagnoses sleep apnea by assessing your symptoms, family history, and medication use.
They may order tests to rule out other medical conditions and request a sleep study to help with their diagnosis.
Sleep studies allow medical professionals to monitor your sleep and diagnose any chronic conditions, including sleep apnea.
A sleep study may take place during an overnight stay at a specialized sleep lab. Alternatively, people can use portable monitoring devices in their home.7
The study involves placing sensors on the face, eyelids, chest, limbs, and fingers. These sensors measure brainwaves, heart and breathing rates, blood oxygen levels, and muscle movements.
The results may help diagnose sleeping disorders like obstructive sleep apnea or central sleep apnea.
Some people may be able to manage mild sleep apnea with lifestyle changes. Doctors may recommend these options for treating obstructive sleep apnea before trying other treatments.
Tips for managing your sleep apnea naturally include:
If you have severe sleep apnea, you should seek medical advice on further treatment.
Untreated sleep apnea stresses the heart, reduces life expectancy by several years, and can directly lead to death. However, effective treatment can control symptoms so that you can lead a normal life without long-term health effects.
Without treatment, sleep apnea can cause serious health problems, including:
Many people with heart failure or an abnormal heart rate have sleep apnea, as sleep apnea can have serious effects on the body.
Additional serious effects include:
Anyone experiencing these symptoms should schedule an appointment with their doctor as quickly as possible.
Sleep apnea is a potentially serious sleep disorder in which breathing repeatedly stops and restarts. Obstructive sleep apnea (OSA) involves blockages of the airways, while central sleep apnea (CSA) involves problems with nerve signals.
Treatments such as continuous positive airway pressure (CPAP) machines, oral devices, and surgery effectively treat sleep apnea. Lifestyle changes such as weight loss, quitting smoking, and reducing alcohol consumption can also help.
Undiagnosed sleep apnea can cause serious health problems such as high blood pressure, stroke, and heart failure without treatment. Seeking medical help is essential if you're experiencing sleep apnea symptoms so you can get back to having healthy sleep.
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