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Side Effects Of Insomnia And The Causes Of Insomnia?
In sleep apnea, with each period of breathlessness (as many as twenty in an hour) the carbon dioxide level in the blood rises and there is a corresponding decrease in the blood oxygen levels. This, along with the stress and the struggle to draw breath, puts a strain on the heart.
Central apnea is caused by the temporary cessation of the message from the brain that tells the diaphragm to breathe. When a person suffers from a combination of obstructive and central apnea, it's called mixed sleep apnea, and is by far the most difficult to treat and control.
In pure central sleep apnea, the brain's respiratory control centers are imbalanced during sleep. Blood levels of carbon dioxide, and the neurological feedback mechanism that monitors it does not react quickly enough to maintain an even respiratory rate, with the entire system cycling between apnea and hyperpnea, even during wakefulness. The sleeper stops breathing, and then starts again. There is no effort made to breathe during the pause in breathing: there are no chest movements and no struggling. After the episode of apnea, breathing may be faster (hyperpnea) for a period of time; a compensatory mechanism to blow off retained waste gases and absorbs more oxygen.
While sleeping, a normal individual is "at rest", as far as cardiovascular workload is concerned. Breathing is regular in a healthy person during sleep, and oxygen levels and carbon dioxide levels in the bloodstream stay fairly constant. The respiratory drive is so strong that even conscious efforts to hold one's breath do not overcome it. Any sudden drop in oxygen or excess of carbon dioxide (even if tiny) strongly stimulates the brain's respiratory centers to breathe. In central sleep apnea, the basic neurological controls for breathing rate malfunctions and fails to give the signal to inhale, causing the individual to miss one or more cycles of breathing. If the pause in breathing is long enough, the percentage of oxygen in the circulation will drop to a lower than normal level (hypoxia) and the concentration of carbon dioxide will build to a higher than normal level (hypercapnia). In turn, these conditions of hypoxia and hypercapnia will trigger additional effects on the body. Brain cells need constant oxygen to live; and, if the level of blood oxygen goes low enough for long enough, the consequences of brain damage and even death will occur. Fortunately, central sleep apnea is more often a chronic condition that causes much milder effects than sudden death. The exact effects of the condition will depend on how severe the apnea is, and the individual characteristics of the person having the apnea.
In any person, hypoxia and hypercapnia have certain common effects on the body. The heart rate will increase, unless there are such severe co-existing problems with the heart muscle itself or the autonomic nervous system that makes this compensatory increase impossible. The more translucent areas of the body will show a bluish or dusky cast from cyanosis, which is the change in hue that occurs due to lack of oxygen in the blood ("turning blue"). Overdoses of drugs that are respiratory depressants (such as heroin, and other opiates) kill by damping the activity of the brain's respiratory control centers. In central sleep apnea, the effects of sleep alone can remove the brains' mandate for the body to breathe. Even in severe cases of central sleep apnea, the effects almost always result in pauses that make breathing irregular, rather than cause the total cessation of breathing.
Sleep apnea can cause high blood pressure, depression, heart problems and in some cases sudden death. If you think that you or anyone in your family has sleep apnea, a visit to your family physician is highly recommended.
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Antique Cast Iron Squeeze Gate Lock one sided lock US $12.99
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Antique 14 Cast Iron Cobblers Shoe Repair Stand With Mould 6 Sided US $9.99
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NEW CAST IRON 2 DOUBLE SIDED TWO BURNER REVERSIBLE GRILL GRIDDLE US $27.95
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Antique Blacksmith Cast Iron AWL 4 Sided Antique Stake US $9.95
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NEW CAST IRON DOUBLE SIDED TWO BURNER REVERSIBLE GRILL GRIDDLE US $17.94
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