What should be noted before conducting polysomnography examination

It can simultaneously collect many physiological signals from the patient's sleep state, amplified by a signal amplifier, and then input to the recording device; most of the polysomnographs used in the sleep examination room are digitalized devices, which have the advantages that cannot be compared with the paper-walking devices; polysomnogram refers to the actual measurement of various physiological indexes recorded by polysomnographs. Regarding the indications for polysomnography in case of clinical suspicion of obstructive sleep apnea and hypoventilation syndrome (OSAHS), the American Academy of Sleep Medicine (AASM) has established a standard that polysomnography should be performed when the following two major criteria are met, or when one major criterion and two minor criteria are met. Polysomnography. The primary criteria are: 1) Habitual/disturbed snoring. 2) Breathing stoppage during sleep or the presence of a sleeper. 2, Respiratory arrest or apnea during sleep. 3, unexplained daytime sleepiness/lack of sleepiness. 4, Unexplained sleep arrhythmia. 5, Unexplained oxygen desaturation during sleep. Risk factors in the secondary criteria: 1, obesity/neck circumference greater than 43.2 cm. 2, men over 40 years of age. 3, postmenopausal women. 3, Postmenopausal women. 4, Hypothyroidism (untreated). 5, Cerebrovascular disease. 6, Neuromuscular disease 7, Pentacameral abnormal findings (head and maxillofacial anomalies, nasal congestion, enlarged tonsils, micrognathia, megaglossia, overgrowth of the soft palate, and narrowing of the pharyngeal airway) Symptoms in the secondary criteria: 1, Primary hypertension . 2, Pulmonary heart disease . 3, Erythrocytosis . 4, headache when getting up 5, hypogonadism 6, memory impairment 7, low cognitive ability 8, increased nocturia Standard sleep breathing monitoring includes: electroencephalogram, oculomotorgram, electromyography; oral and nasal airflow, chest and abdominal movements, oxygen saturation, snoring; electrocardiogram, body position, etc., and a comprehensive understanding of the situation of sleep, respiration, and the heart through the above monitoring, in order to help doctors study and diagnose sleep apnea syndrome and other sleep (Details of monitoring and diagnosis will not be repeated here. (Details of monitoring and diagnosis will not be introduced here.) Sleep apnea monitoring by polysomnography (PSG) is a non-invasive test and generally requires no special preparation. The key to success is for the patient to be calm and able to sleep normally. For some patients with moderate or severe sleep apnea syndrome, falling asleep is usually not a major problem because of the more obvious signs of drowsiness. In order to accurately record the patient's condition, it should be noted before the examination: it should be noted before the examination: it is forbidden to drink coffee, tea and other stimulating beverages a few hours before the examination, because in addition to making people excited and difficult to fall asleep, they will also stimulate the respiratory center, so that the condition changes, and it is difficult to reflect the normal condition. In order to fall asleep during the examination, some patients take sleeping pills such as Valium orally or examine after drinking alcohol are not desirable. Many physiological signals in sleep apnea monitoring are recorded by electrodes affixed to the surface of the skin, and good contact is the key to ensuring high-quality signals, thus it is necessary to take a bath, wash the hair and shave the beard before the examination. During the examination, the healthcare worker will apply some chemical reagents to remove the skin surface grease at the site of the placed electrodes, etc. These are not harmful to the human body?6?4 If you are suffering from an illness such as a cold, it is best to ask for a postponement of the examination. Try to keep your mood calm and avoid being affected by excessive excitement. 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