Obstructive Sleep Apnea
Obstructive sleep apnea is an unsuccessful attempt to breathe through the nose and mouth, caused by obstruction which may involve the soft palate, uvula, nose, tonsils, adenoids, or base of the tongue. It is estimated that at least ten million Americans have unrecognized sleep apnea. When obstructive sleep apnea occurs, the airway is temporarily blocked and air flow stops. When the oxygen level in the brain becomes low enough, the sleeper partially awakens, which clears the obstruction, and the flow of air starts again, usually with a loud gasp. This can occur numerous times throughout the night.
The characteristic rattling sound of snoring is the vibration of the soft palate and uvula or other structures in the upper airway. This is the result of the airway being constricted by one or more of these physical conditions:
- Poor muscle tone in the soft palate when muscles are relaxed by consumption of alcohol or drugs, or by smoking.
- Enlarged uvula, tonsils, and adenoids.
- Blocked nasal air passages, common with a cold or allergies.
- Obstructed nasal airways, caused by polyps, cysts, or a deviated septum.
- Excessive weight, causing tissues in the neck to be bulky and flaccid.
- An underdeveloped upper or lower jaw.
- Hypothyroidism and other glandular disorders.
Obstructive sleep apnea can deprive the snorer of oxygen. If you suffer from obstructive sleep apnea, you are probably also being deprived of the deep sleep stages you need. You may stay drowsy much of the day, and may even fall asleep while driving, or on the job. Without treatment, the sleep deprivation and lack of oxygen caused by sleep apnea increases health risks such as cardiovascular disease, high blood pressure, stroke, diabetes, depression, weight gain and obesity.
Since it is difficult to determine whether sleep apnea is a problem, Dr. Wolfrom may recommend a sleep test. The solution may be as simple as managing a nasal allergy or infection, or performing certain procedures especially if other less invasive methods have not alleviated your sleep apnea.
Treatment Options
Dr. Wolfrom is experienced in the diagnosis and treatment of obstructive sleep apnea, and can help you assess the severity of your condition.
There are different treatment options for obstructive sleep apnea. The option right for you depends upon the severity of your sleep apnea, the physical structure of your upper airway, and other aspects of your medical history.
Positional therapy: Apneas tend to be worse when sleeping on the back (the supine position) as gravity makes it more likely for the tongue to fall back over the airway and/or for the airway muscles and other tissue (like the tonsils) to collapse and block the airway. Not sleeping on the back may reduce the number of apneas.
Weight loss: Sleep apnea can be weight-related. Additional fat around the neck may make the airway narrower, making obstructions more likely to occur. For some overweight people, losing weight can be an effective treatment.
Avoiding alcohol and other CNS depressants: Alcohol and medications that act as central nervous system (CNS) depressants - such as pain killers, sedatives, and muscle relaxants can worsen sleep apnea by relaxing the airway muscles further and/or by reducing the respiratory drive and causing more apneas to occur. Avoiding alcohol and CNS depressants close to bedtime may be helpful.
Oral appliances: Oral appliances, sometimes called dental appliances, are intended to treat apnea by keeping the airway open in one of three ways: by pushing the lower jaw forward (a mandibular advancement device or MAD), by preventing the tongue from falling back over the airway (a tongue-retaining device), or by combining both mechanisms. Oral appliances are typically more effective for people with mild sleep apnea and for non-obese people but can, for some, be effective for moderate and severe sleep apnea.
Continuous Positive Airway Pressure (CPAP): CPAP works by gently blowing pressurized room air through the airway at a pressure high enough to keep the throat open. This pressurized air acts as a "splint." The pressure is set according to the patient's needs at a level that eliminates the apneas that cause awakenings and sleep fragmentation.
Surgery: The intention of surgery is to create a more open airway so obstructions are less likely to occur, which include several different procedures. However the effectiveness rate can vary and surgery can also sometimes worsen the apnea. Although it takes some trial and error, most patients find a combination of treatments that reduce apnea events and improve their overall health, energy, and well-being.
- Nasal surgery, including turbinectomy (removal or reduction of a nasal turbinate), or straightening of the nasal septum, in patients with nasal obstruction or congestion which reduces airway pressure and complicates obstructive sleep apnea.
- Tonsillectomy and/or adenoidectomy in an attempt to increase the size of the airway.
- Removal or reduction of parts of the soft palate and some or all of the uvula, such as uvulopalatopharyngoplasty (UPPP) or laser-assisted uvulopalatoplasty (LAUP).
- Genioglossus advancement, in which a small portion of the lower jaw that attaches to the tongue is moved forward, to pull the tongue away from the back of the airway.
- Maxillomandibular advancement (MMA). MMA is the most effective sleep apnea surgical procedure currently available.The success rate is usually above 75% with a long-term success approaching 90%.