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'.
How the Sleep Disorder Test is conducted?
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. In an hour, patient must have
registered at least 20 respiratory events. There should be 2
percent fall in oxygen saturation (some ask for four percent
fall) in respiratory events.
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 conducted as directed by the attending Medical practitioner.
