Definition

Sleep apnea is a disorder with pauses in breathing. It happens during sleep. These pauses can last for 10 to 30 seconds at a time. It interrupts sleep.

There are three types of sleep apnea:

• Obstructive
• Central
• Mixed

Causes

Causes depend on the type of sleep apnea:

• Obstructive—Soft tissue in the throat relaxes and blocks the airway
• Central—Signals from the brain slow or pause breathing
• Mixed—Both soft tissue and brain signals cause problems

Obstructive Sleep Apnea Copyright © Nucleus Medical Media, Inc.

Risk Factors

Sleep apnea is more common in men and adults over 40 years. Other things that may raise the risk are:

• Being obese
• Having medical conditions, such as:
  • Heart and blood vessel problems
  • Problems with the kidneys or lungs
  • Endocrine problems, such as diabetes and hypothyroidism
• Having a large neck
• Family history of apnea
• Using certain medicines for pain or sleep
• Having problems in the nose or throat such as:
  • Nasal polyps
  • Very large tonsils
  • Deviated nasal septum
• Smoking
• Alcohol use

Symptoms

People with sleep apnea may snore loudly. They may wake often during sleep.

Other problems may be:

• Feeling tired
• Feeling tired even after sleeping
• Headaches
• Problems with focus or memory
• Irritability

Diagnosis

The doctor will ask about your symptoms and health history. A physical exam may be done. A sleep study may be done at home or in a clinic. This is often enough to make the diagnosis.

Treatment

The goal of treatment is to improve sleep and prevent health problems. Treatment depends on the cause and type of sleep apnea. Options may be:

• Lifestyle changes, such as maintaining a healthy weight through diet and exercise, not smoking, and changing sleeping positions
• Wearing a small device in the mouth to keep the airway open
• Using continuous positive airway pressure (CPAP)—a machine that gently blows air into the airway to keep it open
• Changing medicines or trying new ones to ease symptoms
• Having surgery to shrink or remove extra tissue that is blocking the airway

Prevention

Maintaining a healthy weight through diet and exercise may lower the risk of this problem.