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We
have found this device to interfere far less with patients sleep pattern
resulting in much higher sleep efficiency explains Dr. Madani who is the
chairman of oral and maxillofacial surgery at the Capital Health System in
Trenton N.J. and director of Center for Corrective Surgery in Bala Cynwyd
PA. One of the main problems he has heard repeatedly from thousands of
patients during the last 2 decayed is patients reluctance to have a sleep
study in a hospital setting or a laboratory. Now we can check patients
apnea problems in the comfort of their home.
Watch-PAT
100 records and stores data on removable flashcard media just like your
digital camera. The flash card is then placed in a special portal connected
to the doctors computer and upon insertion of the card is auto read and
calibrated. The results will be available to patient the following day.
The
automatic algorithm of this special software detects respiratory events
based on the PAT signal amplitude, pulse rate changes (derived from the PAT
signal), and oxygen saturation. The Actigraph together with additional
signals is used for sleep wake staging. The software issues a detailed
report with sleep-wake and respiratory events statistics.
The
Watch-PAT 100 is a self-contained device that is worn on the wrist and uses
a non-invasive finger mounted pneu-optical probe to measure the PAT signal.
The recorded signals are stored in a removable memory card in the device to
be downloaded to a computer for automatic analysis utilizing proprietary
algorithms. In addition to the PAT Signal, the Watch-PAT 100 records oxygen
saturation and actigraphy. A fourth channel, pulse rate, is derived from the
PAT Signal.
Snoring is associated with sleep apnea and unfortunately is not taken
seriously in most cases; it is one of the first signs of sleep apnea. If
with a push of a bottom we can screen our patients for obstructive sleep
apnea we may in fact be able to diagnose and potentially save their life
Says Dr. Madani who has done laser surgery on thousands of patients and is
reporting on his findings at the upcoming American College of Oral and
Maxillofacial Surgeons annual meeting in Las Vegas Nevada.
Additional information:
Watch-PAT100
The Watch-PAT Sleep study report consists of
two pages. The first page is the patient information, referring physician
and medical evaluation. The second page is the patients sleep study indices
and graphic report of the sleep study.
PAT RDI:
PRDI- The PAT detected Respiratory Disturbance
Index, expresses the number of PAT respiratory events per hour of actual
sleep which has been shown to be an accurate estimate of RDI.
The RDI is the recommended measurement for the
severity of Obstructive Sleep Apnea, by the American Academy of Sleep
Medicine (ASSM). The index includes the following respiratory events as
measured by polysomnography:
Apnea:
Is cessation of respiration, during sleep for 10 seconds or more.
Hypopnea: Reduction of respiration followed by
a desaturation of at least 3% or an arousal.
RERA: Obstructive event that does not meet
the criteria for apnea or hypopnea but causes arousal from sleep (typically
seen as flow limitation terminated by an arousal).
PAT AHI: This Index includes the number of
Apnea and Hypopnea events per hour of actual sleep. The AHI provides
additional information about the severity of OSA, the characteristics of the
respiratory events and can contribute to the treatment decision.
ODI
This index expresses the number of oxygen desaturation events during an hour
of sleep. Desaturation event is determined as reduction of 4% or more of the
oxygen saturation baseline level. The index includes the events that
occurred during sleep time, and it does not includes events occurred during
wake periods. |