Allergies [27] Allergy is a disorder of the immune system often also referred to as atopy.
Antidepressants [29] An antidepressant is a psychiatric medication used to alleviate mood disorders, such as major depression and dysthymia.
Arthritis [12] Arthritis is a group of conditions involving damage to the joints of the body.
Cancer [26] Cancer is a class of diseases in which a group of cells display uncontrolled growth
Cardio & Blood [1] Risk factors for heart disease: infections
Cholesterol [2] A fat-like substance called a lipid. It is used to build cell membranes, hormones and bile acids
Diabetes [23] The inability of the body to produce, or the inability to metabolize, the human hormone insulin; Diabetes insipidus, usually a disorder of the ...
Epilepsy [6] Epilepsy is a common chronic neurological disorder characterized by recurrent unprovoked seizures
Gastrointestinal [2] The digestive tract is the system of organs within multicellular animals that takes in food...
General Health [144] The infant, child or young person?s current health condition
Herbal [18] Herbal tea, herbal medicine
Hormonal [21] Hormones - Proteins produced by organs of the body that trigger activity in other locations.
Men's Health [1] For men on fitness, health, sex, caree
Pain relief [16] Pain management is the medical discipline concerned with the relief of pain.
Skin care [15] The skin is the outer covering of the body
Weight Loss [21] Loss of body weight by dieting or due to various easting disorders or medical conditions.
Women's Health [20] Find information on women's health issues, and lifestyle at the Women's Health
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Sleep laboratory: polysomnogram SLEEP LABORATORY: POLYSOMNOGRAM
When a person is sleeping in a sleep laboratory he is hooked up to a number of machines that measure a number of bodily functions. These include the EEG and EOG. A further recording is made by an EMG or electromyogram which is attached to the chin to determine muscle tension. In some situations in men, the circumference of the penis is also monitored. It has been discovered that during REM sleep there are a lot of physiological changes, including male erection—more about that in chapter 8 on Sex and Dreams.
The Sleep Disorder Unit at Epworth Hospital, Melbourne has the most advanced equipment and, in addition to the above measurements, the patient is monitored for many other important bodily functions also. These include air flow through the mouth and nose, the movement of the chest during respiration, blood oxygen saturation (by means of an oximeter in the finger), snoring (by recording the noise level in the room), the condition of the heart (electrocardiogram), and individual leg movement. All these activities are computed at real time and organized on a video screen. The amount and frequency of the brain waves are analysed by computer and displayed in different colours on a separate screen which gives a clear indication of which stage of sleep the patient is in. The patient is also observed from the control room with an infra-red camera and is continuously recorded on video.
This kind of multiple recording in the sleep laboratory is called a polysomnogram, and operates as long as the person is asleep. The recordings can then be analyzed the next day and the results
used in the diagnosis and treatment of impotence, sleep apnoea, and other sleep disorders. There are now as many as 50 sleep disorders identified, thanks to the sleep laboratory.
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| Keywords for this page: Sleep laboratory: polysomnogram |
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