Deadly snore
”When you hear or see this phrase, you will be very surprised. How can this commonplace snoring phenomenon be fatal? In fact, “snoring” is something that everyone will experience at some point in their lives. It is a physiological phenomenon that occurs during sleep, and it is not that all snoring is so terrible. Only one kind of snoring process sound loud and harsh, irregular, or sound when high and low, intermittent, and accompanied by the snoring sound after the breathing stop (medically known as apnea, commonly known as broken air) phenomenon, each respiratory pause time in more than 10 seconds, long time up to dozens of seconds, or even a few minutes, this phenomenon is medically known as “sleep apnea syndrome “That is terrible, with modern medical research has been known, sleep apnea syndrome is a serious danger to human health with potentially dangerous diseases.
The prevalence of sleep apnea syndrome in the general population is 1 to 4%, while the prevalence in people over 65 years old can be as high as 20 to 40%. The symptoms are not only snoring, breath-holding and repeated waking up at night, but also daytime sleepiness, drowsiness, memory loss, increased nocturia and reduced sexual function. As shallow, slow or suspended breathing during sleep can lead to recurrent episodes of hypoxia and hypercapnia, causing pulmonary hypertension, pulmonary heart disease, hypertension, cardiovascular accidents, senile dementia, and sometimes this apnea can even be fatal, i.e., sudden sleep death. So we must pay great attention to this disease. Once diagnosed, sleep apnea syndrome should be treated promptly and early, it will not heal itself without treatment, but different conditions should be treated in a reasonable and correct way according to the specific situation of each person.
In order to arouse further understanding of sleep apnea syndrome and attention, I will be published in the news media in recent years on the “sleep apnea syndrome” diagnosis and treatment of several popular science articles, dedicated to you.
A. Sleep apnea syndrome, a potentially harmful health disease
Master Jin, who is 65 years old, has been nicknamed the “snoring king” since he was young. He snores ear-splittingly during sleep, sometimes high and sometimes low, one after another. Sometimes, the snoring suddenly stops for 1 second, 2 seconds …… for more than 50 seconds, and no sound is heard, which makes the family panic, when Master Jin turns over and makes a continuous “gah” sound, followed by continuous snoring. In recent years, with the increase of age, Master Jin’s snoring symptoms have become more and more serious, and high blood pressure has appeared.
So, what is the problem of snoring while sleeping, how is it produced, are all snoring a sign of disease, what are the dangers of snoring to human body? How to prevent and treat the problem, and so on, the following is explained one by one.
First, why do people snore? How is it produced? Is all snoring a sign of disease?
To understand these questions, let us first understand the anatomical structure of the respiratory tract. The human respiratory tract consists of nose, pharynx, larynx, large trachea, bronchus and lungs. During breathing air passes from the nasal cavity into the lungs through the above-mentioned airways. The nasal cavity and larynx are supported by bone or cartilaginous tissue, while the pharynx (the back of the mouth) is composed of the soft palate, uvula (commonly known as the uvula), tonsils, and tongue root, and lacks strong bone or cartilaginous tissue support. When awake during the day, the muscles in the soft tissues around the pharyngeal cavity contract compensatingly, while pulling the pharyngeal tissues tight so that they do not block the airway. During sleep, the soft tissues of the four walls of the pharynx are looser, and the hypertrophic mucous membrane around the pharynx and the backward fall of the tongue root can make the pharyngeal cavity even narrower, while the air entering the airway generates eddy currents and causes soft tissues to vibrate, resulting in snoring. Generally speaking, as airway obstruction increases, snoring also increases. Snoring during sleep without snoring pauses, i.e. apnea, is customarily called “simple snoring” or “benign snoring”. Almost everyone has the experience of snoring in their lifetime, and snoring can occur whenever they are overworked, drink alcohol, or sleep deeply, which is generally not harmful to the body. If in the process of snoring in sleep, not only the snoring is loud, but also it is always hitting and not breathing, and then apnea phenomenon appears, the pause time can be more than ten seconds, dozens of seconds, we found in the sleep breathing monitoring that one patient’s apnea is as much as 164.9 seconds (2.8 minutes), which is such a terrible disease. If a person has more than 30 apneas and hypoventilation in 7 hours of sleep at night, the doctor can diagnose him with sleep apnea syndrome. According to statistics, 20% of people who snore are “malignant snoring”, and the total prevalence rate is about 1% to 4%, and the prevalence rate of elderly people over 65 years old is even higher, up to 20% to 40%.
If the pharyngeal cavity is completely blocked during sleep, the phenomenon of apnea (commonly known as broken air) will occur, so that the lungs do not get fresh air and lack of oxygen, resulting in a decrease in blood oxygen concentration, and the lungs, heart, brain and other organs of the patient will be damaged to varying degrees. Recurrent episodes of apnea during nighttime sleep also cause abnormal sleep structure and reduced sleep quality, leading to the development of some serious diseases, such as hypertension, coronary heart disease, arrhythmia, pulmonary heart disease, cerebrovascular accidents, endocrine disorders and neuropsychiatric diseases, and may also be associated with the onset of senile dementia. Studies have shown that patients with sleep apnea syndrome can also occur more serious jitters (18) – sudden sleep death.
Second, who are vulnerable to sleep apnea syndrome? What are its symptoms and manifestations?
Sleep apnea syndrome mostly occurs in middle-aged men who are more obese. Obesity is not only the patient’s weight gain, body fat, it also makes the pharyngeal cavity channel due to a large amount of fat accumulation in the pharyngeal cavity, so that the pharyngeal cavity looseness increased, more likely to appear obstruction. In addition, any disease that can narrow the anatomical structure of the upper respiratory tract, such as tonsil hypertrophy, nasal polyps, nasal septum curvature, uvula and tongue hypertrophy, lymphatic tissue hyperplasia at the root of the tongue, jaw deformity, small size, chronic rhinitis, sinusitis, chronic pharyngitis, nasal tumors, etc. can produce narrowing of the nasal and pharyngeal airways, or even obstruction. There are also some systemic diseases out can be related to sleep apnea syndrome, such as hypothyroidism when the whole body mucous membrane, skin edema, acromegaly and other endocrine system diseases.
When suffering from sleep apnea syndrome, due to repeated hypoxemia at night, repeatedly suffocating awake, poor sleep quality, patients wake up in the morning with headache, sleepiness, sleeplessness, and prominently in the daytime drowsiness, which leads to accidents at work (especially drivers). Severe patients may also show increased nocturnal urination, decreased sexual function, and in severe cases, coma, convulsions, and urinary incontinence.
Third, how should patients with sleep apnea syndrome seek medical treatment?
Patients with sleep apnea syndrome should first go to the outpatient clinic of a hospital specializing in “sleep breathing disorder (snoring)” or “sleep disorders”. Since most patients are unaware of what is happening during sleep, it is best to be accompanied by the patient’s partner or to use a tape recorder to record snoring during sleep for 1-2 nights so that the doctor can understand the condition. The doctor will arrange a sleep apnea monitoring test, also known as polysomnography (PSG), for patients suspected of having sleep apnea syndrome, which is the only reliable way to confirm the diagnosis of the disease and determine the severity of the disease.
The doctor will make a comprehensive analysis based on the results of sleep apnea monitoring, and finally determine the nature and severity of the disease, and then formulate a reasonable treatment plan.
Fourth, how to treat sleep apnea syndrome.
Sleep apnea syndrome can rarely be cured automatically, but it can be treated. If the causes of pharyngeal obstruction and narrowing cannot be removed, sleep apnea syndrome is impossible to be cured. And after decades of research, there is no effective drug for sleep apnea syndrome, especially obstructive sleep apnea syndrome (except for those caused by endocrine disorders).
Some of the commonly used clinical treatments are.
1.Changing some habits can help to treat.
(1) Adopting side sleep position can reduce or prevent the soft tissue of pharyngeal cavity and tongue root from falling back; reduce the pressure of fatty tissue of neck and chest on airway, which can help reduce snoring and even prevent apnea. To change the habitual supine sleeping position is generally difficult, you can try sewing a tennis ball in the middle of the back of your pajamas to ensure the side-lying position at night.
(2) Reduce weight and adhere to physical exercise. Through diet control and active physical exercise, so as to achieve the purpose of weight reduction and weight loss, which is the most important for patients with sleep apnea caused by obesity.
(3) Keep the nasal area open, and treat nasal and sinus disorders in a timely manner. If the patient is a smoker, he should quit smoking, because smoking irritates the mucous membrane of the nasal and pharyngeal cavities and produces chronic inflammation, which will make the already poorly ventilated airways even worse.
2. Ventilator therapy with continuous positive pressure ventilation through the nose (CPAP)
This is currently an efficacious and safe treatment method for sleep apnea syndrome. Currently 70-80% of patients in the world use this treatment method. This method is applicable to patients with various degrees of sleep apnea.
3. Dental brace treatment (also known as oral orthodontic appliance) can prevent snoring by wearing a pair of dental braces in the mouth during sleep, and can also be used as an auxiliary treatment for CPAP treatment via nasal continuous positive pressure ventilation. This method is not suitable for the elderly and patients with loose teeth and oral diseases.
4.Surgical treatment: Patients with sleep apnea syndrome without serious systemic complications and non-obesity causes, patients with respiratory disorder index (AHI) less than 20 by polysomnography (PSG), and patients with obvious anatomical narrowing of the upper airway found during physical examination can be considered for surgical treatment, and staged surgery can be performed for the presence of multi-part narrowing. However, the safety and effectiveness of surgery must be fully estimated before surgery.
The medical profession believes that effective treatment of sleep apnea syndrome can enable patients to get sufficient sleep, thus refreshed, energetic, improve the quality of life and work, and prolong life.
Second, the quality of sleep is more important than the length of sleep
Modern sleep research found that human sleep is an extremely complex process, a night’s sleep is composed of multiple cycles, rather than the usual “sleep until dawn”.
Generally speaking, a normal human sleep cycle can be divided into two phases: non-REM sleep (slow-wave sleep) and REM sleep (heterogeneous sleep). In anaphase sleep, the body, especially the muscles, is in a state of relaxation and rest, but the brain activity is similar to that of wakefulness, and dreaming occurs in this period. The slow wave sleep is divided into four phases (S1-S4), S1 and S2 belong to the light sleep period, S3 and S4 are the deep sleep period, accounting for 15%-20% of the total sleep time, the most important stage of sleep, because the slow wave sleep period is to make the brain in a sleep state, the brain can get sufficient rest, the best effect of recovery from fatigue, if a person wakes up from this period, often will be a moment If a person wakes up from this period, he or she often cannot tell the difference between north and south, and is in a state of “fog and confusion”. Slow-wave sleep and heterogeneous sleep are two mutually transforming phases. A typical sleep is from quiet wakefulness into the S1 stage of slow-wave sleep, which lasts about 1-7 minutes, followed by a faster process, about 10-25 minutes to S4 stage, which lasts about 90 minutes, then into heterogeneous sleep, which lasts about 20-30 minutes, and then back into slow-wave sleep. Throughout the sleep period, the slow-wave sleep and heterophasic sleep cycles are repeatedly transformed about 4-5 times. Adults sleep for an average of 6.5-8.5 hours per day. People with high sleep quality can get better sleep with less sleep time, mainly because slow-wave deep sleep accounts for a larger proportion of sleep, that is, they fall asleep quickly and sleep deeply. On the contrary, people with low sleep quality sleep slowly and sleep shallowly. It can be seen that when we consider sleep, we should not only pay attention to the total duration of sleep, but also consider the proportion of each sleep period, i.e. the quality of sleep. The duration of sleep often varies greatly from person to person. Adults average 6.5-8.5 hours a day, with 65% of the population taking the middle value of about 7.5 hours, but some people only sleep 3-4 hours or 4-5 hours a day for life, such as Edison and Napoleon, who are called short sleepers; but Einstein had to sleep more than 9 hours a day as long sleepers. This is natural, but also related to habit. It is measured that the proportion of deep slow wave sleep in short sleepers does not decrease, but some increase. The reduction in short sleepers is in S1 and S2 light sleep stages. So the quality of sleep of short sleepers is not low. Interestingly, it has been found that naps are characterized by deep sleep S3 and S4 stages in slow wave sleep are more abundant, which is why short naps can make people’s brains more awake to work more effectively, and scholars in Europe and the United States are currently advocating naps, which is an example of short deep sleep. Sleep apnea syndrome patients are drowsy all day long, as long as there is a chance to sleep, it can be said that “see the bed as the in-laws”, the reason is that deep sleep S3, S4 shortened, or even disappeared, the sleep quality is very poor, so sleep snoring at night, always want to sleep during the day, the old time sleep, sleep is not the feeling of lack.
Third, sleep apnea syndrome without timely treatment can also be dead
A few days ago from Fenghua Zhu old lady by the hospital’s full rescue has been turned to safety, from the ward to the general ward. This year’s 72-year-old Mrs. Zhu is suffering from a serious disease called sleep apnea syndrome, if not for the hospital’s timely and effective rescue, her life could not be saved. This is another successful case of extreme sleep apnea syndrome rescued by the guardianship ward of Ningbo First Hospital in recent years. Mrs. Zhu has been suffering from hyperemia for a long time, and in recent years she has developed coronary heart disease and premature ventricular contractions, which have been treated poorly in local hospitals. On August 18 this year, she was transferred to the intensive care unit of Ningbo First Hospital due to chest tightness, shortness of breath and confusion, and the treatment was ineffective. The patient’s condition was so serious that his life was in danger and he was ready to be resuscitated by tracheotomy. The hospital organized several emergency consultations with experts from various departments. During the consultation, the sleep and respiratory specialists found that the patient was extremely obese, with a height of 1.56 meters but a weight of more than 100 kg. The effect of various medications is not good. Due to the seriousness of his condition, he was unable to perform polysomnography monitoring, and later, after the nighttime oxygen saturation check, the oxygen saturation was very low, only 25% at the lowest (normal people are at least 95% or more), and he was in a state of oxygen deprivation for 3 hours and 38 minutes in 7 hours of sleep. This is a typical and serious case of sleep apnea syndrome. For a long time, due to the lack of awareness and understanding of this disease, the primary disease of sleep apnea syndrome like Mrs. Zhu has been misdiagnosed. Under the guidance of the sleep respiratory specialists, the patient was treated with a transnasal continuous positive pressure ventilator during sleep, and after active and effective resuscitation, the condition was quickly brought under control and various symptoms have improved significantly. The patient is currently undergoing further recovery and will be discharged from the hospital soon.
So what kind of disease is sleep apnea syndrome like the one suffered by Mrs. Zhu? How is it caused? And what kind of symptoms does it have? What harm does it do to the human body? In the past, people do not know much about it. Sleep apnea syndrome is a disease that has been gradually recognized by the medical community in the past 30 years. Under normal circumstances, when sleeping at night, the upper respiratory tract can be free to let the air in and out, when suffering from sleep apnea syndrome, due to various causes of obstruction of the upper respiratory tract, can occur every night as few as dozens of up to hundreds of apnea, each pause time can be as long as a few seconds to several minutes, due to the pause in the air can not enter the lungs, so that the patient’s various organs in the body lack of oxygen, and the air The oxygen in the air is necessary for various vital activities of the body.
The main causes of sleep apnea syndrome are
(1) Obesity. Excess fat is deposited in the neck, causing narrowing of the upper airway.
(2) Smoking and alcohol consumption. Causes inflammatory edema of the respiratory mucosa, which aggravates the narrowing of the airway.
(3) Age factor. As the age increases, the neuromuscular tone of the upper respiratory tract decreases, the tissue loosens, and the incidence of snoring increases significantly.
(4) Nasopharyngeal diseases. Such as nasal septum curvature, nasal polyp, turbinate hypertrophy, chronic rhinitis, tonsil or adenoid enlargement, uvula hypertrophy, tongue hypertrophy, etc.
(5) Congenital anatomical deformity. Such as small jaw deformity, mandibular recession, etc. All of these causes can cause or aggravate the narrowing and obstruction of the airway during sleep. The main etiology of sleep apnea syndrome, like that of Mrs. Zhu, is caused by excessive obesity. The common symptoms of sleep apnea syndrome are as mentioned above: severe snoring and recurrent respiratory arrest during sleep; daytime drowsiness; morning headache and dizziness, dry mouth and higher blood pressure; memory loss and inability to concentrate; slow reaction and irritability; increased nocturnal urination; reduced sexual function, etc. Patients with sleep apnea syndrome, if not properly treated for a long time, can cause damage to the heart, brain, lungs, kidneys and other multi-organ functions and cause such as hypertension, heart disease, heart failure, stroke, Alzheimer’s disease, sudden death during sleep, and major traffic accidents caused by sleepiness and fatigue while driving.
People suffering from sleep apnea syndrome, if said, can not get rid of the above-mentioned causes, generally will not be self-healing, but rather when the disease progresses and worsens, can occur as serious complications like the old lady Zhu, thus endangering life. We advise those who have serious snoring and the above-mentioned symptoms to go to a hospital with a sleep breathing disorder clinic as soon as possible in order to receive timely and reasonable treatment.
4. To give a proper name to “snorers
The newspaper article “Nanjing held a New Year’s accident prevention conference, but snoring in the meeting”, after reading the heart very emotional, so important meeting, but someone lying on the table and sleep, called him on stage to receive the award did not know why, a hundred out of the newspaper. These phenomena really should not, really this wind can not grow. But when you think about the meeting when sleeping, snoring is not more than a few reasons: not interested in the meeting, the idea of desertion, causing sleepiness; night sleep, fatigue, want to doze off; may suffer from sleep apnea disease. If the first two reasons, should be seriously criticized to be educated. If it is the last reason, it is a different story, and should be advised to go to the hospital to seriously check whether they are suffering from a disease called “sleep apnea syndrome”. Sleep apnea syndrome is a serious health hazard, it has a variety of clinical manifestations, including daytime drowsiness is one of the main symptoms, as long as there is a chance to doze off, just like a person with a cold cough, personal will is difficult to control. Therefore, it is not surprising that the snoring and sleeping phenomenon occurs in such meetings as above. The author has encountered dozing on a booster, the car hit the bridge threshold pole, but the motor is still starting a serious case of sleep apnea syndrome.
Five, a car accident to pay the bill for driving doze
Master Wang is a truck driver, recently had a major car accident, the reason is to doze off while driving, crashed someone’s limousine, he is directly responsible for, fortunately, no casualties, pay out 20,000 yuan banknotes to close the case. Master Wang snored while sleeping, daytime dozing (medically known as narcolepsy) has a history of more than ten years, similar traffic accidents have occurred many times, but has not been paid attention to this accident before he sounded the alarm. After the doctor’s examination, the old master Wang suffered from severe obstructive sleep apnea syndrome. The car accident occurred is related to this disease.
Sleep apnea syndrome is a serious health hazard. These patients have unusual snoring during sleep, snoring loudly, making it unbearable for the bystanders, sometimes snoring sharply and unpredictably, making people feel that their breathing is difficult and almost suffocating; sometimes snoring suddenly stops for tens of seconds or even 1-2 minutes, and then snoring loudly and deafeningly. When the patient goes to the doctor, the first complaint is snoring at night, drowsiness during the day, lack of energy at work, lack of concentration, slow reaction, etc. It is not uncommon for car drivers to doze off when the red light is on or on the way to drive, and many of these traffic accidents are related to sleep apnea syndrome. A number of recent studies have found that car drivers suffering from sleep apnea syndrome, the incidence of traffic accidents is 2 to 7 times higher than normal. In the United States, car accidents are the third leading cause of death and injury, killing 40,000 to 50,000 people in the 2 million traffic accidents that occur each year. The lack of concentration in people with sleep apnea syndrome can lead to decreased alertness and slower reactions due to excessive daytime sleepiness, and these symptoms are one of the major causes of many traffic accidents. Not only car drivers, but also in other professions and even in high-tech operations, sleep apnea syndrome can bring various degrees of harm, as documented in a report entitled “Awakening America” presented to the U.S. Congress and the Department of Health in 1993 by medical professionals. The background of the space shuttle Challenger accident is related to sleep apnea syndrome. It can be seen that sleep apnea syndrome is not only harmful to personal health, but also brings about such social problems.
Can children also suffer from sleep apnea syndrome?
In the third grade, Qiang Qiang was a good student, but recently, his teacher found that he was inattentive in class, often deserted, and did not like to move during recess, and liked to sleep on his desk and chair. His academic performance kept declining. Teachers and parents are very anxious. Later, after being reminded by others, he went to the hospital sleep breathing disorder (snoring) specialist clinic, and the doctor inquired about his medical history and found that Qiang had the habit of snoring at night when he slept, especially when he slept on his back, the snoring sound was louder and coarser, and he had the appearance of apnea. He had a history of chronic pharyngitis and often complained of sore throat. He had a history of chronic pharyngitis and often complained of pharyngeal pain. During the oral examination, bilateral tonsils were found to be III degree enlarged, blocking almost all the passages of the pharyngeal cavity. Qiang was later diagnosed as having “mild obstructive sleep apnea syndrome” by sleep apnea monitoring (PSG).
The common causes of sleep apnea in children include obesity, chronic nasopharyngeal diseases (nasal polyps, deviated septum, rhinitis, sinusitis, enlarged tonsils), adenoid hyperplasia, small jaw, receding jaw, short neck, etc.
According to the data, the prevalence of sleep apnea syndrome in children is about 2%. In our hospital, there were 7 children out of more than 300 cases who received PSG monitoring, like Qiang Qiang who was diagnosed with sleep apnea syndrome in 2 cases. The other 5 cases were diagnosed as simple snoring, which is also called benign snoring, with uniform and soft snoring sound during sleep, and generally does not cause any harm to human body, but it can become sleep apnea syndrome if not paid attention to prevention and control. If a child is obese or has severe chronic tonsillitis like Qiang does, the enlarged tonsils plus the backward-falling tongue block the airway at night while sleeping. When air can still pass, it makes a “purring” sound. When air cannot pass, the airway is completely blocked and apnea occurs. If a person repeatedly stops breathing throughout the night, fresh air can not enter, the body will be lack of oxygen. Lack of oxygen can cause a series of damage to the brain, heart, kidneys and other organs. This results in daytime drowsiness, sleepiness, fatigue, lack of concentration, common daytime open-mouth breathing, and in severe cases, increased nighttime urination and even enuresis. If the disease progresses further, it can affect the development and growth of the child.
If parents and teachers find that their children snore, sound loudly, sometimes irregularly, or even stop breathing when they sleep, and have these symptoms, they should think that their children may have sleep apnea syndrome, and go to a hospital with a sleep breathing disorder (snoring) specialist clinic first. If the snoring is caused by obesity, it should be treated as a medical condition. If it is caused by obesity, weight control and active participation in physical activities should be carried out, and it is generally believed that a 10% weight loss can improve the symptoms. Timely treatment of nasal, pharyngeal and oral diseases. Sleeping in the lateral position can make the snoring sound lighter or disappear. The use of oral orthodontic appliances (braces) is also effective . Surgery is needed for those with obvious mesenteric stenosis or structural abnormalities such as heavily enlarged tonsils, nasal polyps and small jaws. Like Qiang Qiang after simple bilateral tonsil removal, his body has completely returned to normal. Unless there are special circumstances, continuous positive airway pressure ventilation (CPAP) treatment, which is commonly used in adults, is generally rarely used in children.
Seven, talk about CPAP ventilator treatment for sleep apnea syndrome
When you are diagnosed with sleep apnea syndrome, the most important question is whether this disease can be treated? What method of treatment is used? It is now known that sleep apnea syndrome cannot be cured by itself, but it can be treated. Through treatment, various clinical symptoms can be alleviated or disappeared, thus preventing various complications such as hypertension, cardiovascular accidents and sudden death during sleep. There are two major types of treatment: non-surgical treatment and surgery. The non-surgical treatment mainly includes medication, ventilator, oral orthodontic appliances (braces) and so on. Due to the large dose of drugs, many side effects, poor efficacy, clinical application is rare. Oral appliance is only suitable for simple snoring and mild sleep treatment apnea syndrome. It is only suitable for those who have nasopharyngeal cavity with mesoscopic narrowing (such as pharyngeal mucosal tissue hypertrophy, pharyngeal cavity narrowing, suspensory hypertrophy, soft palate too low, tonsil hypertrophy, nasal polyp, adenoid hyperplasia, nasal septum curvature, small jaw, mandibular recession, etc.) caused by non-obesity factors, and whose sleep apnea index AHI is less than (20 breaths/hour) in patients with sleep apnea syndrome.
Ventilator treatment of sleep apnea syndrome is medically known as continuous positive airway pressure ventilation (CPAP, abbreviated as Continuous Positive Airway Pressure, which means continuous positive airway pressure ventilation in Chinese), which is a non-invasive, safe, efficacious and less side effects treatment method. At present, among the various methods of treating sleep apnea syndrome at home and abroad, CPAP ventilator treatment accounts for 70C80%. It is suitable for severe snoring and various degrees of sleep apnea syndrome, especially for sleep apnea syndrome of moderate degree or above.
So, what is the principle of CPAP ventilator for sleep apnea syndrome? This is because the CPAP ventilator can provide a physiological pressure set by the doctor according to the condition, which can open the obstructed part of the nasopharyngeal cavity, make the airway open, avoid the obstruction of the nasopharyngeal cavity area, ensure the air can enter and exit freely, and prevent the body from lacking oxygen. This method was invented by Dr. Sullivan in Australia in 1981, and after decades of efforts, especially the leap forward in electronic computer technology, a variety of lightweight, comfortable and portable CPAP ventilators have been developed. The main unit is simply an air pump, with different functions, its structure is also different. In use, the main unit is connected to the nasal mask through a 1.5C2m threaded tube with smooth inner wall, and the mask is fixed to the head with a headband. When the main unit is powered on, the CPAP ventilator can operate normally according to the set parameters.