OSCAR-code/oscar/help/help_en/glossary.html

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<h1>Glossary of Sleep Disorder Terminology</h1>
<h3 class="western" style="font-variant: normal; letter-spacing: normal; font-style: normal"><a name="A-Flex"></a>
<font color="#000000"><font face="sans-serif"><b>A-Flex</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">An
algorithm for adjusting CPAP pressure during the later stage of
inspiration and during exhalation to improve patient comfort based on
a user-defined gain setting.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>AHI</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Apnea/Hypopnea
Index. A count of apnea and hypopnea events per hour.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Apnea"></a>
<font color="#000000"><font face="sans-serif"><b>Apnea</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">An
apnea is indicated if there is an 80%/75% (Respironics/ResMed)
reduction in airflow for 10 seconds compared to the average airflow
over an extended period of several minutes or if there is no airflow
detected for 10 seconds.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Apnea/Clear
Airway Apnea Detection the the Respironics System One.. An apnea is
detected when there is an 80% reduction in airflow from a baseline
for at least 10 seconds if there is no airflow detected for 10
seconds. During the apnea, one or more pressure test pulses are
delivered by the device. The device evaluates the response of the
patient to the test pulse(s) and assesses whether the apnea has
occurred while the patient has a clear airway or an obstructed
airway. The airway is determined to be clear if the pressure test
pulse generates a significant amount of flow; otherwise the airway is
determined to be obstructed.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Apnea
Detection guidelines per ResMed machines..Apnea...When the
respiratory flow decreases by more than 75% for at least 10 seconds.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>ASV</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt"><b>Adaptive
Servo-Ventilation</b>. Pertains to a low-pressure, electrically
driven ventilator system with electronic pressure control. The
device&rsquo;s pressure controls are adjusted to deliver pressure
support for patient ventilatory assistance. The device augments
patient breathing by supplying pressurized air through a patient
circuit. It senses the patient&rsquo;s breathing effort by monitoring
airflow in the patient circuit and adjusts its output to assist in
inhalation and exhalation.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Auto-CPAP</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Continuous
Positive Airway Pressure (CPAP) that automatically titrates the
pressure up and down based on the varying requirements of the
patient.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>AVAPS</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Average
Volume Assured Pressure Support therapy mode</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Average_AHI"></a>
<font color="#000000"><font face="sans-serif"><b>Average AHI</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
average AHI (Apnea/Hypopnea Index) is the total number of apneas and
hypopneas that occurred during sleep divided by the number of therapy
hours.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Average_Hours_of_Use"></a>
<font color="#000000"><font face="sans-serif"><b>Average Hours of Use</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
total number of hours the patient received therapy divided by the
total days of use.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Average_Time_in_Large_Leak_Per_Day"></a>
<font color="#000000"><font face="sans-serif"><b>Average Time in
Large Leak Per Day</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Displays
the average amount of time the patient spent with excessive air
leakage that will compromise therapy. This could be the result of
poor mask fitting.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Bi-Flex"></a>
<font color="#000000"><font face="sans-serif"><b>Bi-Flex</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
small amount of pressure relief (levels of 1, 2, or 3) applied during
the latter stages of inspiration and during active exhalation (the
beginning part of exhalation).</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Bi-Level"></a>
<font color="#000000"><font face="sans-serif"><b>Bi-Level</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Two
different positive pressure levels (IPAP/EPAP). The dual pressure
levels provide a more natural means of delivering pressure support
therapy to the patient resulting in improved patient comfort. The
pressure toggles between an inspiratory and an expiratory pressure
during spontaneous breathing.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="BPM"></a>
<font color="#000000"><font face="sans-serif"><b>BPM</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Breaths
per Minute, or beats per minute in the context of Heart Rate/Pulse
oximetry.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="C-Flex"></a>
<font color="#000000"><font face="sans-serif"><b>C-Flex</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
small amount of pressure relief applied during active exhalation (the
beginning part of exhalation).</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Cheyne-Stokes_Respiration"></a>
<font color="#000000"><font face="sans-serif"><b>Cheyne-Stokes
Respiration</b></font></font></h3>
<p style="orphans: 2; widows: 2"><span style="font-variant: normal"><font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt"><span style="letter-spacing: normal"><span style="font-style: normal"><span style="font-weight: normal">(pinched
from Wikipedia, full link:&nbsp;</span></span></span></font></font></font></span><span style="display: inline-block; border: none; padding: 0cm"><span style="font-variant: normal"><font color="#663366"><span style="text-decoration: none"><font face="sans-serif"><font size="2" style="font-size: 10pt"><span style="letter-spacing: normal"><span style="font-style: normal"><span style="font-weight: normal"><span style="background: transparent"><a href="http://en.wikipedia.org/wiki/Cheyne-Stokes_respiration">Cheyne-Stokes
respiration</span></span></span></span></span></font></font></span></font></span></a><span style="font-variant: normal"><font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt"><span style="letter-spacing: normal"><span style="font-style: normal"><span style="font-weight: normal">)</span></span></span></font></font></font></span></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Cheyne-Stokes
respiration is an abnormal pattern of breathing characterized by
progressively deeper and sometimes faster breathing, followed by a
gradual decrease that results in a temporary stop in breathing called
an apnea. The pattern repeats, with each cycle usually taking 30
seconds to 2 minutes. It is an oscillation of ventilation between
apnea and hyperpnea with a crescendo-diminuendo pattern, and is
associated with changing serum partial pressures of oxygen and carbon
dioxide.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Cheyne-Stokes
respiration and periodic breathing are the two regions on a spectrum
of severity of oscillatory tidal volume. The distinction lies in what
we observe happening at the trough of ventilation: if there is apnea,
we describe it as Cheyne-Stokes respiration (since apnea is a
prominent feature in their original description); if there is only
hypopnea (abnormally small but not absent breaths) then we call it
periodic breathing. Physiologically and mathematically, the phenomena
are less different than they appear, because breaths that are smaller
than the anatomical dead space do not actually ventilate the lung and
so - from the point of view of gas concentrations in an alveolus -
the nadir of hypopnea in periodic breathing may be indistinguishable
from apnea.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">These
phenomena can occur during wakefulness or during sleep, where they
are called the Central sleep apnea syndrome (CSAS).</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">System
One calls lumps this together with Periodic breathing..</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>cm H2O</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Measurement
unit of pressure; centimeters of water.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Compliance"></a>
<font color="#000000"><font face="sans-serif"><b>Compliance</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
consistency and accuracy with which a patient follows the regimen
prescribed by a physician or other health professional.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Compliance_Graph"></a>
<font color="#000000"><font face="sans-serif"><b>Compliance Graph</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Provides
a view of the patient's therapy usage and the patient's compliance.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="CPAP"></a>
<font color="#000000"><font face="sans-serif"><b>CPAP</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Continuous
Positive Airway Pressure</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>CSR</b></font></font></h3>
<p style="orphans: 2; widows: 2"><span style="font-variant: normal"><font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt"><span style="letter-spacing: normal"><span style="font-style: normal"><span style="font-weight: normal">Short
2019-02-24 01:55:54 +00:00
for&nbsp;</span></span></span></font></font></font></span><a href="http://www.apneaboard.com/wiki/index.php?title=Cheyne-Stokes_respiration"><span style="font-variant: normal"><font color="#0b0080"><span style="text-decoration: none"><font face="sans-serif"><font size="2" style="font-size: 10pt"><span style="letter-spacing: normal"><span style="font-style: normal"><span style="font-weight: normal">Cheyne-Stokes
Respiration</span></span></span></font></font></span></font></span></a></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Daily_Events_Per_Hour"></a>
<font color="#000000"><font face="sans-serif"><b>Daily Events Per
Hour</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Number
of events per hour for one night of therapy.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Desaturation"></a>
<font color="#000000"><font face="sans-serif"><b>Desaturation</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">An
indication that the patient's measured SpO2 is reduced by 3% or more.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Diagnostic_RDI"></a>
<font color="#000000"><font face="sans-serif"><b>Diagnostic RDI</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Diagnostic
Respiratory Disturbance Index. The total number of breathing events
divided by the total sleep time without therapy.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="DME"></a>
<font color="#000000"><font face="sans-serif"><b>DME</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Distributor
of Durable Medical Equipment</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>EPAP</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Expiratory
Positive Airway Pressure</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Exhaled Tidal Volume</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
amount of air passing out of the lungs for each breath.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>FL</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Flow
Limitation is a partial obstruction of the airway as detected by a
change in the shape of the flow signal.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Flow
Limitation Detection in Respironics System One..Auto Mode Only
scoring only..Straight CPap or Straight BiPap modes does not score
this event. The device looks for relative changes in the peak,
flatness, roundness, or shape (skewness) of the inspiratory portion
of the airflow waveform. These changes are observed both over a short
period of time (groups of 4 breaths) and over a long period of time
(several minutes). Statistical measures are used to help minimize
false event detection while allowing the device to be sensitive to
even small changes.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Flow Limitation
Index</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Changes
in flow limitation are recorded as events. The Flow Limitation Index
is calculated by the total number of flow limitation events per night
divided by the hours of use. Note: The average is calculated by
taking the total number of events divided by the number of therapy
days. This can be used to indicate if there has been a significant
degradation in the flow signal, resulting in a pressure increase.
This value is only reported on auto pressure machines.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>GMT</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Greenwich
Mean Time (time zone), also known as Universal Coordinated Time (UTC)</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Hours of Usage</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Shows
patterns of use displayed by date.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Hypopnea</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">An
hypopnea is indicated if there is approximately 40% reduction in
airflow for a duration of between 10 and 60 seconds, compared to the
average airflow over an extended period of several minutes. Following
a reduction in airflow, the therapy device must see two recovery
breaths in order to label the event as a potential hypopnea.
(Respironics detection is 40% reduction and ResMed detection is 50%
reduction)</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Hypopnea Index</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
Hypopnea Index is calculated by the total number of hypopnea events
per night divided by the hours of use.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Hypopnea
Detection in the Respironics System One..A hyponea is detected when
there is an approximately 40% reduction in airflow from a baseline
for at least 10 seconds.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Hypopnea
Detection per ResMed guidelines...When the respiratory flow decreases
to 50% for at least 10 seconds.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>IPAP</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Inspiratory
Positive Airway Pressure</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Leak</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
amount of air leakage in the patient circuit.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>LL</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Large
Leak</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>LPM</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Liters
per Minute..L/min</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>MaP</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Minutes
at Pressure</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Mean Pressure</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Average
device pressure multiplied by the time at pressure divided by the
total time in the device.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Minute Vent</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
average minute ventilation (tidal volume x rate).</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>NRAH Index</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Non-Responsive
Apnea/Hypopnea Index. A non-responsive apnea/hypopnea flag is
generated when a patient has apneas and or hypopneas that do not
respond to increased pressure from a pressure therapy device. It is
detected when the patient has at least 2 apneas and/or hypopneas, the
pressure level of the therapy device increases at least 3 cm H2O, and
the patient continues to have apneas and/or hypopneas. Total Events /
Total Session Hours = Index.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Obstructive Apnea</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Obstructive
Apnea (OA) is a temporary cessation of airflow caused by a collapse
of the airway either full or partial without an accompanying
cessation of respiratory effort.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Obstructive Apnea
Index</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
Obstructive Apnea Index is calculated by the total number of
Obstructive Apnea events per night divided by the hours of use.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>OSA</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Obstructive
Sleep Apnea</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>PB</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Periodic
Breathing is a Respironics data feature defined as a persistent
waning and waxing breathing pattrn which repeats itself between 30
and 100 seconds. The nadir of the breathing pattern is characterized
by at least a 40% reduction in airflow from an established baseline
flow. The pattern must be present for several minutes before it can
be identified as periodic breathing. No therapy adjustments are made
in response to periodic breathing.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Patient-Triggered
Breaths</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Breaths
initiated by the patient.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Peak Average
Pressure</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
largest average CPAP Pressure in the date range.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Pressure</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Pressure
settings and average delivered pressures are indicated as colored
lines on reports.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>90% &amp; 95%
Pressure reports</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">90%
Pressure.. PR System One..The pressure at which the device spent 90%
of the time at OR below. 95% Pressure.. ResMed S9..The pressure at
which the device spent 95% of the time at OR below.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Pressure Pulses</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Data
available on the Respironics System One machines. Small test probes
or puffs of air to help the machine decide if the apnea event is
obstructive in nature or clear airway in nature. This number can vary
widely and is of no real critical consequence to therapy.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Pressure Support</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Difference
between IPAP and EPAP pressure on bi-level machines.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Ramp</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">During
ramp time, a patient starts therapy at a pressure lower than the
prescription. The pressure is incrementally increased over time while
the patient is falling asleep.</font></font></font></p>
<h3 class="western" style="margin-top: 0cm; margin-bottom: 0cm; border: none; padding: 0cm; font-variant: normal; letter-spacing: normal; font-style: normal; line-height: 160%; orphans: 2; widows: 2; background: #ffffff"><a name="Ramp_Time"></a>
<font color="#000000"><font face="sans-serif"><b>Ramp Time</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
time over which the pressure increases from the initial low-value, to
the prescription value.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>RERA</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt"><b>Respiratory
Event Related Arousal...</b>&nbsp;a sequence of breaths characterized
by increasing respiratory effort leading to an arousal from sleep,
but which does not meet criteria for an apnea or hypopnea.&rdquo;</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">RERA
Detection in the Respironics System One data..Respiratory
effort-related arousal..defined as an arousal from sleep that follows
a 10 second or longer sequence of breaths that are characterized by
increasing respiratory effort, but which does not meet criteria for
an apenea or hypopnea. Snoring, though usually associated with this
condition need not be present. The RERA algorithm monitors for a
sequence of breaths that exhibit both a subtle reduction in airflow
and progressive flow limitation. If this breath sequence is
terminated by a sudden increase in airflow along with the absence of
flow limitation, and the event does not meet the conditions for an
apnea or hypopnea, a RERA is indicated.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>RDI</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Respiratory
Disturbance Index</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>REMstar Auto Flags</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Measurements
recorded in 30 second intervals for the following measures: NR =
Non-Responsive Apnea/Hypopnea event OA = Obstructive Apnea event H =
Hypopnea event FL = Flow Limitation event S = Snoring event AHI =
Apnea/Hypopnea Index (the sum of the Apneas and Hypopneas during the
night divided by the number of therapy hours).</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>RR</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Respiration
Rate Frequency of breathing, expressed as the number of breaths per
minute</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>S/T</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Spontaneous/Timed
therapy mode</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>SD Card</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
SD Card (Secure Digital Card) is an integrated circuit which is
housed in a compact, rugged plastic enclosure. SD Cards are designed
to store data and to enable the transfer of data between devices
equipped with SD Card slots.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Session</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
length of time in which therapy has been delivered with breaks
lasting no more than one hour.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Sigh</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
breath that is delivered every 100 mandatory or assisted breaths at
150% of the normal volume.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Sleep Therapy Flags</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Measurements
recorded in 30 second intervals for the following measures: OA =
Obstructive Apnea event H = Hypopnea event S = Snoring event AHI =
Apnea/Hypopnea Index (the sum of the Apneas and Hypopneas during the
night divided by the number of therapy hours).</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>SmartCard</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
type of memory card inserted in some therapy devices that records the
patient's device usage information. The SmartCard can be removed for
easy download of the data into EncorePro.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>SmartCard
Reader/Writer</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
SmartCard reader/writer is used to download compliance data from a
SmartCard.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Snore</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
loud upper airway breathing sound during sleep, without episodes of
apnea.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Snore
detection in Respironics System One..Vibratory snore is detected when
a specific frequency is detected during the inspiratory portion of
the patient's breath. Vibratory snore is disabled at pressures
greater than 16 cm H2O.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Split Night</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">A
mode that enables the auto CPAP algorithm to be delayed by a
pre-selectable time interval.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Ti</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Ti...ResMed..Duration
of inspiration (ie, the respiratory flow into the lungs), expressed
in seconds (5 breath moving average).</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Ti
Max...ResMed...Maximum inspiration time in seconds.</font></font></font></p>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Ti.
Min..ResMed..Minimum inspiration time in seconds.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Tidal Volume</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
amount of air passing in and out of the lungs for each breath (mL).</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Total AHI</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
sum of the Apneas and Hypopneas divided by the number of therapy
hours.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>VAPS</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Volume
Assured Pressure Support, breath by breath correction towards a
target tidal volume.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>Vibratory Snore (VS)
Index</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">The
Vibratory Snore Index is the total number of vibratory snoring events
per night divided by the hours of use.</font></font></font></p>
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<font color="#000000"><font face="sans-serif"><b>VTE</b></font></font></h3>
<p style="font-variant: normal; letter-spacing: normal; font-style: normal; font-weight: normal; orphans: 2; widows: 2">
<font color="#252525"><font face="sans-serif"><font size="2" style="font-size: 10pt">Estimated
average exhaled tidal volume.</font></font></font></p>
<p style="margin-bottom: 0cm; line-height: 100%"><br/>
</p>
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