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OBSTRUCTIVE SLEEP APNEA

Mar, 11 2017

This is a guest post by Dr. Kent W. Davidson, M.D who works with our Doctors Online partners at eDocAmerica. 

The Greek word "apnea" means "without breath".  In sleep apnea, there is an involuntary cessation of breathing that occurs while sleeping.  These pauses in breathing can last anywhere from 10 seconds to as much as a minute.  Snoring is also a common feature of sleep apnea.  While snoring can just be a nuisance, snoring associated with sleep apnea can signal a serious medical condition. If left untreated, sleep apnea can lead to the development of high blood pressure, heart failure, memory problems, and can increase the chance of having driving accidents due to excessive fatigue. 

How does OSA develop? 

The most common type of sleep apnea is called Obstructive Sleep Apnea (OSA).  This occurs when soft tissue in the back of the throat collapses during sleep, blocking off the airway. OSA is usually seen in overweight individuals.  Other risk factors for the development of OSA include: a large neck, a recessed chin, smoking, and alcohol use.  A typical patient with OSA will snore loudly after falling asleep. The snoring is then interrupted by silent periods during which no breathing takes place (apnea).  These apneic episodes are then followed by sudden efforts to breathe. The result is disturbed sleep, leading to excessive daytime drowsiness.

How is OSA diagnosed?   

Most people with OSA will be unaware of their snoring or episodes of apnea. The predominant symptom will be excessive daytime drowsiness.  The snoring and apnea episodes are usually reported by a family member. The American Sleep Apnea Association has published a questionnaire known as the Snore Score.  A positive response to any one of the following questions points to the possibility of someone having obstructive sleep apnea:

  1. Are you a loud and/or regular snorer?
  2. Have you ever been observed to gasp or stop breathing during sleep?
  3. Do you feel tired or groggy upon awakening, or do you awaken with a headache?
  4. Are you often tired or fatigued during the waking hours?
  5. Do you fall asleep sitting, reading, watching TV or driving?
  6. Do you often have problems with memory or concentration? 

Other symptoms that can be associated with OSA include morning headaches, weight gain, attention deficits and memory loss. The diagnosis is usually confirmed after monitoring for apneic episodes in a sleep laboratory.

How is OSA treated?    

Fortunately, there are a number of treatments available for OSA, depending on the severity and underlying causes.  These treatment options include:

  • Avoidance of alcohol and medications that relax the airway and/or reduce respiratory drive.
  • Weight loss is highly effective in obese individuals by reducing excess fat around the neck which is constricting the airway.
  • Positional therapy, i.e., avoiding sleeping on the back (for adults)
  • Oral appliances designed to keep the airway open.
  • Surgery (the most common procedure is called uvulopalatopharyngoplasty which removes excess tissue that is blocking the airway). 
  • Continuous positive airway pressure (CPAP)

The American Academy of Sleep Medicine recommends the use of an oral appliance as a first line treatment for patients with mild to moderate OSA.  In many patients, however, CPAP is the most effective treatment method.  It works by blowing pressurized air into the person's airway at a high enough pressure to keep the airway from collapsing.  A relatively new surgical procedure known as the Pillar Procedure has been found to be helpful in mild-to-moderate OSA. This procedure involves the placement of flexible implants into the soft palate to keep it from relaxing and blocking the airway.  For more on Obstructive Sleep Apnea, visit the American Sleep Apnea Association. 

Dr Kent

This is a guest post by Dr. Kent W. Davidson, M.D who works with our Doctors Online partners at eDocAmerica. With the Doctors Online service, you get personalized answers to medical questions within a few short hours - from an expert team of U.S.-based board-certified specialists. Click here to learn more.  

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