Computer monitors apnea during sleep

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Categorized Under: Snoring
Dated: 22 Oct 2008
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An ancient myth told of the plight of Undine, a nymph condemned to a life of sleeplessness out of fear she would stop breathing while asleep and die. Modern science calls it sleep apnea.

The ailment — an interruption of breathing during sleep — also is known as ”Undine’s Curse,” and it afflicts a large number of middle-aged, overweight men, many who unknowingly suffer the condition.

Sleep apnea goes all the way back to Greek mythology. We’re finally getting the upper hand on it by diagnosing those who didn’t even know they were affected.

The condition also has been diagnosed in infants who can be aroused from lapses in breathing by being shaken, an action that doctors say awakens the baby and forces the brain to message the lungs to begin functioning again. Sleep apnea in the case of infants is the cause of sudden infant death syndrome, for which there is no known cure.

The condition now is being diagnosed with the help of a computer and electrodes that monitor patients at home while they sleep. The computer, in use at several medical centres around the country, is among the most accurate of devices capable of monitoring the sometimes life-threatening disorder, Johns explained.

The system uses a mesh halter to which electrodes are fixed and stuck on the chests of patients to measure a series of vital functions, including the length of time between breaths.

The halter and electrodes are placed on the patient at the clinic and worn home. At night, while the patient sleeps, the electrodes are plugged into a small box that records the patient’s sleep patterns.

The system measures heart rate, lung function, oxygen saturation in the blood and paradoxing which is the opposite movement of chest and abdomen.

He said the monitoring box is brought back to the clinic the next morning, at which time the data collected during the night is fed into and analyzed by a computer.

If the patient is apneic, the computer might show decreased respiration during sleep, a decrease in heart rate and a desaturation of oxygen in the blood stream.

The operation is similar to a tonsilectomy and involves removal of tissue at the back of the throat, which enlarges air passages to enable unobstructed breathing. Other surgical methods also successfully treat sleep apnea caused by nasal deformity or nasal polyps.

The computerized diagnostic method also helps determine if the patient suffers from other types of sleeping and breathing disorders, primarily central nervous system dysfunction in which the brain is not telling the lungs and diaphragm to move.

Wake up happy! Discover the proven sleep apnea treatments that guarantee a healthy and restful sleep! To grab your free report go to Best Sleep Apnea Treatments

Choosing the best treatment for apnea

Posted by Apnea
Categorized Under: General
Dated: 22 Oct 2008
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If you are suffering from sleep apnea, there are several treatments for it. An obvious next step is continuous positive airway pressure. Other treatments include oral and dental devices to keep your airway open. If all else fails, surgery is an option.

To assess snoring and other symptoms of sleep apnea, have the patient run a tape recorder to record the sounds he or she makes while sleeping. Snoring related to sleep apnea differs from innocuous snoring. Benign snoring has a very monotonous, repetitive sound, but intermittent quiet periods between the loud snoring noises may be indicative of apnea.

Symptoms of apnea indicate referral to a sleep disorder clinic for complete polysomnography, because the diagnosis and classification of apnea can be made only in this setting.

Treatment of obstructive sleep apnea syndrome is multifaceted. The first intervention is advice-the advice you would give anyone who wanted to control snoring:

  • Lose weight (if appropriate)
  • Sleep on the stomach or on a side, not on the back
  • Avoid alcohol at least 3-4 hours before retiring
  • Avoid pharmacologic sleep aids
  • Get enough hours of sleep each night.

An overnight polysomnogram is used to confirm the diagnosis and assess severity of physiologic disturbances. Initially, simple measures, such as avoidance of alcohol and sedatives before bedtime and sleeping on the side rather than the back, may be tried. Nasal continuous positive airway pressure is considered first-line therapy, and compliance can be improved by education and counseling of the patient.

A first-line medical treatment includes use of a nasal continuous positive air pressure (CPAP) device, which supplies pressure to the upper airway and prevents the airway from collapsing while the patient is asleep. The pressure appropriate for a given patient must be determined in a sleep laboratory.

Another procedure gaining popularity is uvulopalatopharyngoplastysurgical removal of redundant tissue from the soft palate. This procedure is most often used in patients who do not respond to CPAP because of a lack of patency in the upper air-way due to trauma, infections, or allergies. Uvulopalatopharyngoplasty is beneficial in only 50% of patients.

Tracheostomy gives the most consistent long-term benefit but is accompanied by significant emotional morbidity. Tracheostomy may be required for the 5% of patients whose apnea does not respond to other therapy.

Those patients may be able to clear their airway with a prescription dental device that holds the tongue in place or repositions the jaw. But those devices may also be uncomfortable, and they work much less reliably than the mask and pump.

A more effective alternative is surgery, which widens the airway by removing any flabby or enlarged tissue, making a groove in the back of the tongue, or sliding the jaw slightly forward.

Wake up happy! Discover the proven sleep apnea treatments that guarantee a healthy and restful sleep! To grab your free report go to Best Sleep Apnea Treatments

Apnea sufferers often awake tired

Posted by Apnea
Categorized Under: General
Dated: 20 Oct 2008
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As awareness of apnea mounts, suspected sufferers are spending their nights under an infrared camera’s watchful eye in hundreds of so-called “sleep labs” across America, sensors dotting their skin and scalp. 

Eleven o’clock is “lights out.” At 11:02 sharp, Navarro yawns. A needle swings wildly on a monitor humming softly in the next room. At 11:10 p.m., Navarro turns onto his left side, and a half-dozen needles jerk in response. 

This night will be like no other for Navarro, a 32-year-old computer programmer. For the next seven hours, his every breath, movement and heartbeat will be recorded as he spends the night in a sleep disorders laboratory. 

He is here because doctors think he suffers from sleep apnea, a disorder marked by loud snoring and interrupted breathing. Once considered relatively obscure, sleep apnea is stirring increased concern among physicians because it can cause severe daytime fatigue, high blood pressure, stroke and heart problems; serious cases can be life-threatening. 

A study published in the New England Journal of Medicine reported that sleep apnea is more common than once believed. The study found that 9% of women and 24% of men had sleep-disordered breathing; 2% of women and 4% of men in the middle-aged work force met the criteria for sleep apnea. That would make undiagnosed sleep apnea a major public health burden. 

Depending on the severity of the apnea, treatment can include use of a night time face mask or even surgery. There’s a less high-tech approach for those who snore or suffer apnea only while on their backs: sewing a tennis ball in the back of their pajamas tops so they will sleep on their sides instead.

Not surprisingly, roommates and spouses are often the first to spot potential apnea victims. Navarro is a longtime snorer; he can remember his college roommates waking him to request that he tone it down. His wife, Christine, grew worried when she noticed that he sometimes stopped breathing briefly during the night. She learned about sleep apnea from her doctor and urged her husband to get tested. 

A video screen shows Navarro dozing peacefully. Pink computer paper moves steadily through the polysomnograph, a machine with 12 needles that records everything from his eye movements to heart contractions.

All night, monitors will record the needles’ black tracks, paying special attention to those measuring Navarro’s breathing. Sleep apnea victims have been known to stop breathing hundreds of times each night.

Wake up happy! Discover the proven sleep apnea treatments that guarantee a healthy and restful sleep! To grab your free report go to Best Sleep Apnea Treatments

Sleep and Disease

Posted by Apnea
Categorized Under: Sleep Apnea
Dated: 17 Oct 2008
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Sleep and sleep-related problems play a role in a large number of human disorders and affect almost every field of medicine. For example, problems like stroke and asthma attacks tend to occur more frequently during the night and early morning, perhaps due to changes in hormones, heart rate, and other characteristics associated with sleep. Sleep also affects some kinds of epilepsy in complex ways. REM sleep seems to help prevent seizures that begin in one part of the brain from spreading to other brain regions, while deep sleep may promote the spread of these seizures. Sleep deprivation also triggers seizures in people with some types of epilepsy.

Neurons that control sleep interact closely with the immune system. As anyone who has had the flu knows, infectious diseases tend to make us feel sleepy. This probably happens because cytokines, chemicals our immune systems produce while fighting an infection, are powerful sleep-inducing chemicals. Sleep may help the body conserve energy and other resources that the immune system needs to mount an attack.

Sleeping problems occur in almost all people with mental disorders, including those with depression and schizophrenia. People with depression, for example, often awaken in the early hours of the morning and find themselves unable to get back to sleep. The amount of sleep a person gets also strongly influences the symptoms of mental disorders. Sleep deprivation is an effective therapy for people with certain types of depression, while it can actually cause depression in other people. Extreme sleep deprivation can lead to a seemingly psychotic state of paranoia and hallucinations in otherwise healthy people, and disrupted sleep can trigger episodes of mania (agitation and hyperactivity) in people with manic depression.

Sleeping problems are common in many other disorders as well, including Alzheimer’s disease, stroke, cancer, and head injury. These sleeping problems may arise from changes in the brain regions and neurotransmitters that control sleep, or from the drugs used to control symptoms of other disorders. In patients who are hospitalized or who receive round-the-clock care, treatment schedules or hospital routines also may disrupt sleep. The old joke about a patient being awakened by a nurse so he could take a sleeping pill contains a grain of truth. Once sleeping problems develop, they can add to a person’s impairment and cause confusion, frustration, or depression. Patients who are unable to sleep also notice pain more and may increase their requests for pain medication. Better management of sleeping problems in people who have other disorders could improve these patients’ health and quality of life.

Sleep and Circadian Rhythms

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Categorized Under: Sleep Apnea
Dated: 17 Oct 2008
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Circadian rhythms are regular changes in mental and physical characteristics that occur in the course of a day (circadian is Latin for “around a day”). Most circadian rhythms are controlled by the body’s biological “clock.” This clock, called the suprachiasmatic nucleus or SCN, is actually a pair of pinhead-sized brain structures that together contain about 20,000 neurons. The SCN rests in a part of the brain called the hypothalamus, just above the point where the optic nerves cross. Light that reaches photoreceptors in the retina (a tissue at the back of the eye) creates signals that travel along the optic nerve to the SCN.

Signals from the SCN travel to several brain regions, including the pineal gland, which responds to light-induced signals by switching off production of the hormone melatonin. The body’s level of melatonin normally increases after darkness falls, making people feel drowsy. The SCN also governs functions that are synchronized with the sleep/wake cycle, including body temperature, hormone secretion, urine production, and changes in blood pressure.

By depriving people of light and other external time cues, scientists have learned that most people’s biological clocks work on a 25-hour cycle rather than a 24-hour one. But because sunlight or other bright lights can reset the SCN, our biological cycles normally follow the 24-hour cycle of the sun, rather than our innate cycle. Circadian rhythms can be affected to some degree by almost any kind of external time cue, such as the beeping of your alarm clock, the clatter of a garbage truck, or the timing of your meals. Scientists call external time cues zeitgebers (German for “time givers”).

When travelers pass from one time zone to another, they suffer from disrupted circadian rhythms, an uncomfortable feeling known as jet lag. For instance, if you travel from California to New York, you “lose” 3 hours according to your body’s clock. You will feel tired when the alarm rings at 8 a.m. the next morning because, according to your body’s clock, it is still 5 a.m. It usually takes several days for your body’s cycles to adjust to the new time.

To reduce the effects of jet lag, some doctors try to manipulate the biological clock with a technique called light therapy. They expose people to special lights, many times brighter than ordinary household light, for several hours near the time the subjects want to wake up. This helps them reset their biological clocks and adjust to a new time zone.

Symptoms much like jet lag are common in people who work nights or who perform shift work. Because these people’s work schedules are at odds with powerful sleep-regulating cues like sunlight, they often become uncontrollably drowsy during work, and they may suffer insomnia or other problems when they try to sleep. Shift workers have an increased risk of heart problems, digestive disturbances, and emotional and mental problems, all of which may be related to their sleeping problems. The number and severity of workplace accidents also tend to increase during the night shift. Major industrial accidents attributed partly to errors made by fatigued night-shift workers include the Exxon Valdez oil spill and the Three Mile Island and Chernobyl nuclear power plant accidents. One study also found that medical interns working on the night shift are twice as likely as others to misinterpret hospital test records, which could endanger their patients. It may be possible to reduce shift-related fatigue by using bright lights in the workplace, minimizing shift changes, and taking scheduled naps.

Many people with total blindness experience life-long sleeping problems because their retinas are unable to detect light. These people have a kind of permanent jet lag and periodic insomnia because their circadian rhythms follow their innate cycle rather than a 24-hour one. Daily supplements of melatonin may improve night-time sleep for such patients. However, since the high doses of melatonin found in most supplements can build up in the body, long-term use of this substance may create new problems. Because the potential side effects of melatonin supplements are still largely unknown, most experts discourage melatonin use by the general public.

Dreaming and REM Sleep

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Categorized Under: Sleep Apnea
Dated: 17 Oct 2008
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We typically spend more than 2 hours each night dreaming. Scientists do not know much about how or why we dream. Sigmund Freud, who greatly influenced the field of psychology, believed dreaming was a “safety valve” for unconscious desires. Only after 1953, when researchers first described REM in sleeping infants, did scientists begin to carefully study sleep and dreaming. They soon realized that the strange, illogical experiences we call dreams almost always occur during REM sleep. While most mammals and birds show signs of REM sleep, reptiles and other cold-blooded animals do not.

REM sleep begins with signals from an area at the base of the brain called the pons (see figure 2 ). These signals travel to a brain region called the thalamus, which relays them to the cerebral cortex – the outer layer of the brain that is responsible for learning, thinking, and organizing information. The pons also sends signals that shut off neurons in the spinal cord, causing temporary paralysis of the limb muscles. If something interferes with this paralysis, people will begin to physically “act out” their dreams – a rare, dangerous problem called REM sleep behavior disorder. A person dreaming about a ball game, for example, may run headlong into furniture or blindly strike someone sleeping nearby while trying to catch a ball in the dream.

REM sleep stimulates the brain regions used in learning. This may be important for normal brain development during infancy, which would explain why infants spend much more time in REM sleep than adults . Like deep sleep, REM sleep is associated with increased production of proteins. One study found that REM sleep affects learning of certain mental skills. People taught a skill and then deprived of non-REM sleep could recall what they had learned after sleeping, while people deprived of REM sleep could not.

Some scientists believe dreams are the cortex’s attempt to find meaning in the random signals that it receives during REM sleep. The cortex is the part of the brain that interprets and organizes information from the environment during consciousness. It may be that, given random signals from the pons during REM sleep, the cortex tries to interpret these signals as well, creating a “story” out of fragmented brain activity.

What Does Sleep Do For Us?

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Categorized Under: Sleep Apnea
Dated: 17 Oct 2008
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Although scientists are still trying to learn exactly why people need sleep, animal studies show that sleep is necessary for survival. For example, while rats normally live for two to three years, those deprived of REM sleep survive only about 5 weeks on average, and rats deprived of all sleep stages live only about 3 weeks. Sleep-deprived rats also develop abnormally low body temperatures and sores on their tail and paws. The sores may develop because the rats’ immune systems become impaired. Some studies suggest that sleep deprivation affects the immune system in detrimental ways.

Sleep appears necessary for our nervous systems to work properly. Too little sleep leaves us drowsy and unable to concentrate the next day. It also leads to impaired memory and physical performance and reduced ability to carry out math calculations. If sleep deprivation continues, hallucinations and mood swings may develop. Some experts believe sleep gives neurons used while we are awake a chance to shut down and repair themselves. Without sleep, neurons may become so depleted in energy or so polluted with byproducts of normal cellular activities that they begin to malfunction. Sleep also may give the brain a chance to exercise important neuronal connections that might otherwise deteriorate from lack of activity.

Deep sleep coincides with the release of growth hormone in children and young adults. Many of the body’s cells also show increased production and reduced breakdown of proteins during deep sleep. Since proteins are the building blocks needed for cell growth and for repair of damage from factors like stress and ultraviolet rays, deep sleep may truly be “beauty sleep.” Activity in parts of the brain that control emotions, decision-making processes, and social interactions is drastically reduced during deep sleep, suggesting that this type of sleep may help people maintain optimal emotional and social functioning while they are awake. A study in rats also showed that certain nerve-signaling patterns which the rats generated during the day were repeated during deep sleep. This pattern repetition may help encode memories and improve learning.

How Much Sleep Do We Need?

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Categorized Under: Sleep Apnea
Dated: 15 Oct 2008
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The amount of sleep each person needs depends on many factors, including age. Infants generally require about 16 hours a day, while teenagers need about 9 hours on average. For most adults, 7 to 8 hours a night appears to be the best amount of sleep, although some people may need as few as 5 hours or as many as 10 hours of sleep each day. Women in the first 3 months of pregnancy often need several more hours of sleep than usual. The amount of sleep a person needs also increases if he or she has been deprived of sleep in previous days. Getting too little sleep creates a “sleep debt,” which is much like being overdrawn at a bank. Eventually, your body will demand that the debt be repaid. We don’t seem to adapt to getting less sleep than we need; while we may get used to a sleep-depriving schedule, our judgment, reaction time, and other functions are still impaired.

People tend to sleep more lightly and for shorter time spans as they get older, although they generally need about the same amount of sleep as they needed in early adulthood. About half of all people over 65 have frequent sleeping problems, such as insomnia, and deep sleep stages in many elderly people often become very short or stop completely. This change may be a normal part of aging, or it may result from medical problems that are common in elderly people and from the medications and other treatments for those problems.

Experts say that if you feel drowsy during the day, even during boring activities, you haven’t had enough sleep. If you routinely fall asleep within 5 minutes of lying down, you probably have severe sleep deprivation, possibly even a sleep disorder. Microsleeps, or very brief episodes of sleep in an otherwise awake person, are another mark of sleep deprivation. In many cases, people are not aware that they are experiencing microsleeps. The widespread practice of “burning the candle at both ends” in western industrialized societies has created so much sleep deprivation that what is really abnormal sleepiness is now almost the norm.

Many studies make it clear that sleep deprivation is dangerous. Sleep-deprived people who are tested by using a driving simulator or by performing a hand-eye coordination task perform as badly as or worse than those who are intoxicated. Sleep deprivation also magnifies alcohol’s effects on the body, so a fatigued person who drinks will become much more impaired than someone who is well-rested. Driver fatigue is responsible for an estimated 100,000 motor vehicle accidents and 1500 deaths each year, according to the National Highway Traffic Safety Administration. Since drowsiness is the brain’s last step before falling asleep, driving while drowsy can – and often does – lead to disaster. Caffeine and other stimulants cannot overcome the effects of severe sleep deprivation. The National Sleep Foundation says that if you have trouble keeping your eyes focused, if you can’t stop yawning, or if you can’t remember driving the last few miles, you are probably too drowsy to drive safely. For the best Sleep Apnea Treatments read our free article about Sleep Apnea Treatments.

Understanding Sleep

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Categorized Under: Sleep Apnea
Dated: 15 Oct 2008
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Do you ever feel sleepy or “zone out” during the day? Do you find it hard to wake up on Monday mornings? If so, you are familiar with the powerful need for sleep. However, you may not realize that sleep is as essential for your well-being as food and water.

Sleep is a Dynamic Activity

Until the 1950s, most people thought of sleep as a passive, dormant part of our daily lives. We now know that our brains are very active during sleep. Moreover, sleep affects our daily functioning and our physical and mental health in many ways that we are just beginning to understand.

Nerve-signaling chemicals called neurotransmitters control whether we are asleep or awake by acting on different groups of nerve cells, or neurons, in the brain. Neurons in the brainstem, which connects the brain with the spinal cord, produce neurotransmitters such as serotonin and norepinephrine that keep some parts of the brain active while we are awake. Other neurons at the base of the brain begin signaling when we fall asleep. These neurons appear to “switch off” the signals that keep us awake. Research also suggests that a chemical called adenosine builds up in our blood while we are awake and causes drowsiness. This chemical gradually breaks down while we sleep.

During sleep, we usually pass through five phases of sleep: stages 1, 2, 3, 4, and REM (rapid eye movement) sleep. These stages progress in a cycle from stage 1 to REM sleep, then the cycle starts over again with stage 1. We spend almost 50 percent of our total sleep time in stage 2 sleep, about 20 percent in REM sleep, and the remaining 30 percent in the other stages. Infants, by contrast, spend about half of their sleep time in REM sleep.

During stage 1, which is light sleep, we drift in and out of sleep and can be awakened easily. Our eyes move very slowly and muscle activity slows. People awakened from stage 1 sleep often remember fragmented visual images. Many also experience sudden muscle contractions called hypnic myoclonia, often preceded by a sensation of starting to fall. These sudden movements are similar to the “jump” we make when startled. When we enter stage 2 sleep, our eye movements stop and our brain waves (fluctuations of electrical activity that can be measured by electrodes) become slower, with occasional bursts of rapid waves called sleep spindles. In stage 3, extremely slow brain waves called delta waves begin to appear, interspersed with smaller, faster waves. By stage 4, the brain produces delta waves almost exclusively. It is very difficult to wake someone during stages 3 and 4, which together are called deep sleep. There is no eye movement or muscle activity. People awakened during deep sleep do not adjust immediately and often feel groggy and disoriented for several minutes after they wake up. Some children experience bedwetting, night terrors, or sleepwalking during deep sleep.

When we switch into REM sleep, our breathing becomes more rapid, irregular, and shallow, our eyes jerk rapidly in various directions, and our limb muscles become temporarily paralyzed. Our heart rate increases, our blood pressure rises, and males develop penile erections. When people awaken during REM sleep, they often describe bizarre and illogical tales – dreams.

The first REM sleep period usually occurs about 70 to 90 minutes after we fall asleep. A complete sleep cycle takes 90 to 110 minutes on average. The first sleep cycles each night contain relatively short REM periods and long periods of deep sleep. As the night progresses, REM sleep periods increase in length while deep sleep decreases. By morning, people spend nearly all their sleep time in stages 1, 2, and REM.

People awakened after sleeping more than a few minutes are usually unable to recall the last few minutes before they fell asleep. This sleep-related form of amnesia is the reason people often forget telephone calls or conversations they’ve had in the middle of the night. It also explains why we often do not remember our alarms ringing in the morning if we go right back to sleep after turning them off.

Since sleep and wakefulness are influenced by different neurotransmitter signals in the brain, foods and medicines that change the balance of these signals affect whether we feel alert or drowsy and how well we sleep. Caffeinated drinks such as coffee and drugs such as diet pills and decongestants stimulate some parts of the brain and can cause insomnia, or an inability to sleep. Many antidepressants suppress REM sleep. Heavy smokers often sleep very lightly and have reduced amounts of REM sleep. They also tend to wake up after 3 or 4 hours of sleep due to nicotine withdrawal. Many people who suffer from insomnia try to solve the problem with alcohol – the so-called night cap. While alcohol does help people fall into light sleep, it also robs them of REM and the deeper, more restorative stages of sleep. Instead, it keeps them in the lighter stages of sleep, from which they can be awakened easily.

People lose some of the ability to regulate their body temperature during REM, so abnormally hot or cold temperatures in the environment can disrupt this stage of sleep. If our REM sleep is disrupted one night, our bodies don’t follow the normal sleep cycle progression the next time we doze off. Instead, we often slip directly into REM sleep and go through extended periods of REM until we “catch up” on this stage of sleep.

People who are under anesthesia or in a coma are often said to be asleep. However, people in these conditions cannot be awakened and do not produce the complex, active brain wave patterns seen in normal sleep. Instead, their brain waves are very slow and weak, sometimes all but undetectable.

Sleep Apnea | Insomnia

Sleep Apnea

Posted by Apnea
Categorized Under: Sleep Apnea
Dated: 15 Oct 2008
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What is Sleep Apnea?
Sleep apnea is a common sleep disorder characterized by brief interruptions of breathing during sleep.  These episodes usually last 10 seconds or more and occur repeatedly throughout the night.  People with sleep apnea will partially awaken as they struggle to breathe, but in the morning they will not be aware of the disturbances in their sleep.  The most common type of sleep apnea is obstructive sleep apnea (OSA), caused by relaxation of soft tissue in the back of the throat that blocks the passage of air.  Central sleep apnea (CSA) is caused by irregularities in the brain’s normal signals to breathe.  Most people with sleep apnea will have a combination of both types.  The hallmark symptom of the disorder is excessive daytime sleepiness. Additional symptoms of sleep apnea include restless sleep, loud snoring (with periods of silence followed by gasps), falling asleep during the day, morning headaches, trouble concentrating, irritability, forgetfulness, mood or behavior changes, anxiety, and depression.  Not everyone who has these symptoms will have sleep apnea, but it is recommended that people who are experiencing even a few of these symptoms visit their doctor for evaluation.  Sleep apnea is more likely to occur in men than women, and in people who are overweight or obese.

Is there any treatment?

There are a variety of treatments for sleep apnea, depending on an individual’s medical history and the severity of the disorder.  Most treatment regimens begin with lifestyle changes, such as avoiding alcohol and medications that relax the central nervous system (for example, sedatives and muscle relaxants), losing weight, and quitting smoking.  Some people are helped by special pillows or devices that keep them from sleeping on their backs, or oral appliances to keep the airway open during sleep.  If these conservative methods are inadequate, doctors often recommend continuous positive airway pressure (CPAP), in which a face mask is attached to a tube and a machine that blows pressurized air into the mask and through the airway to keep it open.  There are also surgical procedures that can be used to remove tissue and widen the airway.  Some individuals may need a combination of therapies to successfully treat their sleep apnea.

What is the prognosis?

Untreated, sleep apnea can be life threatening.  Excessive daytime sleepiness can cause people to fall asleep at inappropriate times, such as while driving.  Sleep apnea also appears to put individuals at risk for stroke and transient ischemic attacks (TIAs, also known as “mini-strokes”), and is associated with coronary heart disease, heart failure, irregular heartbeat, heart attack, and high blood pressure.  Although there is no cure for sleep apnea, recent studies show that successful treatment can reduce the risk of heart and blood pressure problems.

What research is being done?

The National Institute of Neurological Disorders and Stroke (NINDS) and other institutes of the National Institutes of Health (NIH) conduct research related to sleep apnea in laboratories at the NIH, and also support additional research through grants to major medical institutions across the country.  Much of this research focuses on finding better ways to prevent, treat, and ultimately cure sleep disorders, such as sleep apnea.

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