Polysomnography (Polysomnography PSG)

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Polysomnography (PSG) in the whole night sleep process, continuous and simultaneous recording of EEG and ECG, respiration and other more tha


Polysomnography (PSG) in the whole night sleep process, continuous and simultaneous recording of EEG and ECG, respiration and other more than 10 indicators, all records of the next day by automaticallyto after artificial correction. Monitoring is mainly composed of three parts: analysis of sleep structure, process and monitoring abnormal eeg. To monitor the sleep breathing function, to find the sleep breathing disorder, and analyze its type and severity. Monitoring sleep cardiovascular function. In addition, according to the needs, to record the limb activity or penile erection, in order to understand the reasons and the nature of the impotence of insomnia.

The basic content of PSG inspection:

1, sleep: by recording EEG, ECG, EMG accurately reflect the sleep status and stage

2, EEG: need to distinguish between sleep and wake up, sleep stages and the proportion of each period.

3, electro eye: according to whether the eye movement, distinguish between REM and NREM.

4, EMG: record the muscle activity of the mandibular part of the electrical activity, assist the distinction between REM and NREM.

Respiratory condition:

5, nasal airflow: more sensitive to the temperature sensitive to the temperature of the exhaled breath and inhaled air temperature difference, to understand the flow or not, to determine whether the occurrence of sleep apnea.

6, chest and abdominal movement: the resistance in chest abdominal or other conductive material feel chest and abdomen activities exist or disappear, to distinguish between the central or obstructive sleep apnea.

7, oximetry: through the sensor clip on the finger of the continuously collecting blood oxygen saturation can understand the time and degree of the hypoxia during sleep, judgment of sleep apnea syndrome and the severity of the estimated treatment effect is very helpful.

8, the heart situation: through the electrocardiogram to understand the whole process of sleep center rate and ECG waveform changes, analysis of various arrhythmia and other abnormal waveform and apnea, evaluate the effect of treatment.

The above monitoring is sufficient to diagnose sleep apnea syndrome (OSAS), but also some polygraph records to understand the nature of snoring, snoring, sleep apnea and relationship and its frequency spectrum; and the position sensor, can record the change of position in patients during sleep, understand the relationship between apnea and sleep postures in order to avoid misdiagnosis, some only in the supine position before the emergence of the apnea.

Polysomnography (PSG) is an internationally recognized standard for the diagnosis of sleep apnea syndrome. It will provide scientific and accurate clinical diagnosis for the patients.

Use of polysomnography (PSG):

1, recording and analysis of sleep, correct assessment and diagnosis of insomnia: polysomnography is so far the only can objectively and scientifically and quantitatively record and analyze the sleep instrument, can understand the sleep latency, frequency and duration of awakening, two kinds of sleep and sleep, wake up time and the proportion of the total sleep time so, have the common standard of international. Therefore, we can correctly assess the truth of insomnia, and found some of the causes of insomnia, such as brain lesions, depression, sleep apnea, limb abnormalities and other activities.

2, found that sleep disordered breathing: including obstructive and central sleep apnea syndrome, benign snoring, sleep sleep, shortness of breath, feeling of suffocation. Clinical on the habitual snoring sound with frequent apnea of obstructive sleep apnea syndrome is the most common, can cause a series of diseases, including cardiovascular and cerebrovascular diseases.

3, with some lesions of the nervous system: including narcolepsy, periodic limb movement disorder, restless legs syndrome and sleep behavior disorders, such as somnambulism, night terrors, nocturnal panic attacks, with dreams of violent movements etc..

4, diagnosis of occult depression: the depression is very common, and often in a variety of somatic symptoms. The disease has a special manifestation in polysomnography, which is helpful for the diagnosis, and it can be diagnosed with depression. In order to make the polysomnography PSG in a more natural sleep condition, now the portable recording box has been used in clinical, can monitor the oxygen saturation and respiratory airflow and other indicators as OSAS screening, greatly reduced the cost of check. In addition, development of multi missile system monitoring sleep monitoring mattress in recent years no electrode is a major advance in diagnostic technology, make sleep monitoring more comfortable, natural, can also be carried out large-scale epidemiological investigation using this technique.

Considerations before sleep apnea monitoring:

1, check the noon of the day do not drink caffeinated beverages (tea, coffee, chocolate and cola).

2, do not drink alcohol before the inspection, do not use sleep medications (unless these have become your daily routine). Long term treatment of a certain drug treatment in advance of their own doctors to consult what drugs can not stop taking. If you drink alcohol before the inspection, the technician should explain.

3, do not take a nap on the day, unless it becomes a habit.

4, comes with a baggy pajamas and pajamas, pajamas must be untied front style, in order to check.

5, please check before the bath at home, but do not use body bath liquid, do not use hair after the bath, hair care products.

6, men should shave patients before the examination (with hair, please be shaved off).



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