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Polysomnogram (as it was know earlier), now called the PSG Sleep Study or Neurodiagnostic is a test to know about sleep associated breathing disorders, such as walking in sleep and night-time convulsions. Electro-physiology collected data is shown in the waveforms and put in digitally on computer the neurologist would go through the data and will make his inferences

Why to Conduct a Sleep Disorder Test?

Sleep studies are carried out for a variety of reasons. The problems of abrupt awakening known as Night terror or say  Pavor nocturnus, wherein the patient get up from sleep as if in terror. The tests for sleep terror disorder are mostly behavioral tests. Through sleep disorder test your physician attempts to understand the nature of your sleep disorder. Is it Narcolepsy (sleep apnea) or is it a seizure occurring during night time (Nocturnal), also to test the walking while you are actually sleeping and also to test the ‘Restless leg syndrome’.

Information of the sleep disorder test?

Sleep study test procedure of painless Patient is prepared for sleep disorder test in hotel bed, 8 surface electrodes are connected to your scalp by specific glue. The process will find out level of sleep of patient through video recording of eye movements and brain waves. Electrodes are put underside the chin to register muscle tone. Electrodes at lower portion of both legs observe leg actions. Elastic bands, placed on chest, abdomen register the breathing effort. A probe is kept on finger measures the oxygen quantity and a few patches are placed on chest to note down the heartbeat. The technologist will be monitoring from an attached room, using his data recording paraphernalia.

Instructions are given to the patient by intercom to do some tasks in to confirm proper performance of equipment. The study is formally goes into operation with “Good Night” for a period of at least six hours, for child may go up to eight hours. After collecting sufficient respiratory data, the technologist will fix the Continuous Positive Air Pressure (CPAP) machine, an interface device to the Patient. CPAP forms the beginning of sleep apnea care. CPAP will send filtered air to support the airway remain open. CPAP has been found exceptionally successful in cure of “obstructive sleep apnea”. Before starting the use of CPAP patients might have to take second study.

Criteria For to Be Met Before Using CPAP/BiPAP in Diagnostic Sleep Disorder Test:

It is essential that all the below mentioned conditions, in totality and compulsorily be adhered to, before fitting CPAP or BiPAP machine to the Patient. During first 3 hours of sleep study at least two hours the patient was asleep. At least sixty respiratory events are netted during two hours of sleep to compare with a ‘respiratory disturbance index’ (RDI) of 20. A patient should register 20 respiratory events within an hour. In respiratory events fall in oxygen saturation should be 2 percent.

Preparation for sleep disorder test: Patients are prohibited to use caffeine products in the day and no naps before night of the sleep disorder test. They are asked to have their scalp and hairs clean, dry, and free of any type of hair cosmetic.

The names other of sleep disorder tests of value are (1) The Multiple Sleep Latency Test (2) Polysomnogram (Sleep Study), and (3) Sleep Apnea Study. They are completed according to the attending Medical practitioner’s direction.