CClinicalTrials.gg
CompletedNCT02808338Updated Mar 19, 2019Results posted

Servo-Ventilation In-lab PSG Evaluation

An interventional study of Philips BiPAP AutoSV Advanced System One and Modified Philips BiPAP ASV in Sleep Apnea Syndromes, sponsored by Philips Respironics. Completed at 1 site in United States. Open to participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2019-03-19.

Sponsored by Philips Respironics · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 6 months after the study started (first participant enrolled Nov 2015, registered Jun 2016).
Phase
Not applicable
Study type
Interventional
Enrollment
25
Allocation
Randomized
Ages
21 Years and older
Sex
All
01

Study summary

Continuous Positive Airway Pressure (CPAP) is the most effective treatment for the Obstructive Sleep Apnea-Hypopnea Syndrome (OSAHS). CPAP stabilizes the airway and prevents instability and collapse. With a stable and patent airway, breathing continues in a normal manner, gas exchange is improved, and there is no disruption of sleep related to disturbed breathing.

Auto Servo Ventilation (Auto SV) is a mode of positive airway pressure used to treat obstructive and complex central sleep apnea. The main features of the Auto SV mode include:

  • Normalization of ventilation by automatically adjusting Inspiratory Positive Airway Pressure (IPAP) pressure to achieve a target ventilation. IPAP is increased or decreased to help stabilize the ventilation.
  • Provision of timed, back-up breaths during central apneas. The optimal back-up rate is automatically determined by the device based on the patient's breathing.
  • Automatic control of Expiratory Positive Airway Pressure (EPAP) to treat obstructive events.

Several manufacturers produce these types of devices. The algorithms used to determine the IPAP, EPAP and minimum respiratory rate are different. The largest number of these devices currently in use are the BiPAP AutoSV Advanced System One (Philips Respironics, Murrysville PA) and the Variable positive airway pressure (VPAP) Adapt (ResMed Corp., San Diego CA).

Read the detailed description

This study is to better understand the performance and features of the BiPAP autoSV Advanced System One. Philips Respironics will evaluate the PolySomnoGraphy (PSG) and Encore data from each night. The aim of the study is to characterize the acute outcomes of treatment provided by the device and evaluate any modifications made to the Philips Respironics device's algorithm

The participants for this study will be experienced in having used servo ventilation therapy at their home because it is only such patients who are already using servo ventilation as part of routine clinical care that are eligible for participation.

Participants will receive four (4) randomized PSG's during which they will receive treatment from the following devices in a randomized manner:

  • FDA released Philips BiPAP AutoSV Advanced System One
  • A Modified Philips BiPAP ASV
  • FDA released ResMed S7 VPAP Adapt
  • FDA released ResMed S9 VPAP Adapt

The participants sought for this effort will be previously prescribed a servo-ventilation device as part of routine clinical care.

Baseline with PSG

  • Informed Consent
  • Inclusion/Exclusion Criteria Review
  • Demographics
  • Anthropometric Measurements
  • PAP Prescription information (if available; from Device or from Medical records). This is the pressure settings of the device that was prescribed by the patient's clinical sleep medicine provider.
  • Medical History and physical examination
  • Sleep History- Including that past 30 day detailed report
  • Diagnostic PSG history (copies of sleep studies that were performed as part of routine clinical care in the past that qualified the patient for the servo-ventilation device)
  • Current Medications
  • Vital Signs (at beginning of PSG night)
  • Research Trial PSG- Randomized to a device Procedures for Each PSG after Baseline
  • Current Medications
  • Vital Signs (at beginning of PSG night)
  • Research Trial PSG- Randomized to one of the four devices (4 research PSGs will be performed for each subject).

    30 day Take Home with Modified Philips BiPAP ASV device

After the last PSG participants will be sent home on Modified Philips Auto Servo Ventilation (ASV) study device. A wireless modem with oxygen saturation level (SPO2) connection will be connected to the Modified Philips ASV study device. The wireless modem with SPO2 connection is for device data collection/transmission purposes only that monitors the usage and performance of the device in the home-setting.

  • The device setting should be set to the following:

    • P max: 30
    • EPAP min: 4
    • Expiratory Positive Airway Pressure maximum (EPAPmax):15
    • Pressure Support Minimum (PS min): 0
    • Pressure Support Maximum (PS max): 15
    • BiFlex (Bi-Level Flex): 2
    • Rate: Auto

After 30 day Take Home Participants Will

  • Return to the Sleep Lab
  • Complete the end of study questionnaire
  • Return all of the study equipment

Additional Take Home with the Modified Philips BiPAP ASV device:

  • Participants may be asked to use the Modified Philips ASV study device for an additional 30 days if more data is needed for analysis. Participants will complete the same end of day questionnaire noted above.

After trial completion:

  • When the Participant is done with the trial they will go back to using their own prescribed device.
02

Conditions studied

  • Sleep Apnea Syndromes
03

In context

Sleep Apnea Syndromes

2,162 studies on the registry are indexed under Sleep Apnea Syndromes; 290 are open to participants now.

This study's enrollment of 25 is below the median of 53 across 1,386 interventional studies indexed under Sleep Apnea Syndromes.

Browse Sleep Apnea Syndromes studies →

Lead sponsor

Philips Respironics is the lead sponsor of 40 studies on the registry; none are open to participants now.

Of its 14 completed or terminated interventional studies of FDA-regulated products, 14 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Ability to provide consent
  • Age ≥ 21
  • Currently prescribed servo ventilation therapy at home
  • At least two weeks of recent adherence and efficacy data from PAP device demonstrating adequate use of therapy (at least 4 hours of use per night and use on at least 9 of 14 nights)
  • Current device compliance report demonstrating residual Apnea-Hypopnea Index (AHI) of 5 or more

Exclusion criteria

Exclusion Criteria:

  • Participants who are acutely ill, medically complicated or who are medically unstable
  • Participants in whom PAP therapy is otherwise medically contraindicated
  • Participants who are claustrophobic
  • Symptomatic ("Symptomatic" defined as hospitalized for heart failure or a change in cardiac medications, within the last two months) chronic heart failure (NYHA 2-4) and reduced LVEF≤45%, AND moderate to severe predominant central sleep apnea
  • Participants with previously diagnosed respiratory failure or respiratory insufficiency and who are known to have elevated arterial carbon dioxide levels while awake (PaCO2 ≥ 55mmHg).
  • Participants requiring any kind of oxygen therapy
  • Participants who have had surgery of the upper airway, nose, sinus, eyes, or middle ear within the previous 90 days
  • Participants with untreated, non-OSA sleep disorders, including but not limited to; insomnia, periodic limb movement syndrome, or restless legs syndrome (PLMI > 10).
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
25 participants (actual)

Study arms

  • Active comparator
    Philips BiPAP AutoSV Advanced System One

    The Bi-Level Positive Airway Pressure system will be used and will be configured with these settings. P max: 30 EPAP min: 4 EPAPmax: 15 Pressure Support (PS) min: 0 Pressure Support (PS) max: 15 BiFlex: 2 Rate: Auto

    Device: Philips BiPAP AutoSV Advanced System One

  • Experimental
    Modified Philips BiPAP ASV

    The modified Philips BiPAP ASV will be configured with these settings P max: 30 EPAP min: 4 EPAPmax: 15 PS min: 0 PS max: 15 BiFlex: 2 Rate: Auto

    Device: Modified Philips BiPAP ASV

  • Active comparator
    ResMed S7 VPAP Adapt

    This is an FDA approved device and the following settings will be administered: End-expiratory Pressure (EEP): 4 PSmin: 3 PSMax: 16

    Device: ResMed S7 VPAP Adapt

  • Active comparator
    ResMed S9 VPAP Adapt

    This is an FDA approved device and the following settings will be administered: EPAP min: 4 EPAPmax: 15 PS min: 0 PS max: 20 Max Ramp: Off

    Device: ResMed S9 VPAP Adapt

Interventions

  • DevicePhilips BiPAP AutoSV Advanced System One

    Auto SV Auto Servo Ventilation is a mode of positive airway pressure used to treat obstructive and complex central sleep apnea. This devices is FDA approved and will be set according to a predetermined setting.

  • DeviceModified Philips BiPAP ASV

    This Modified BiPAP ASV will be set to a predetermined setting. This is the investigational device.

  • DeviceResMed S7 VPAP Adapt

    This device is FDA approved and will be set to predetermined setting.

  • DeviceResMed S9 VPAP Adapt

    This device is FDA approved and will be set to predetermined setting.

06

What researchers measure

Primary outcomes

  1. Average Apnea Hypopnea Index Among Different Polysomnography Devices.

    The Apnea Hypopnea Index is the number of the apneas and hypopneas during one hour of sleep. The average of these events over one night were compared during each overnight device use.

    Time frame: 4 nights

07

Results

Posted Mar 19, 2019

Participant flow

A multi-site study that accrued over 2016 and into the middle of 2017.

Screening
Participant flow — Screening
MilestoneScreening
Started25
Completed15
Not completed10
Withdrew: Screen failure10
Overnight In-lab Polysomonography
Participant flow — Overnight In-lab Polysomonography
MilestoneScreening
Started15
Modified philips bipap asv13
Resmed s7 vpap adapt13
Philips bipap autosv advanced system one12
Resmed s9 vpap adapt12
Completed13
Not completed2
Withdrew: Withdrawal by subject1
Withdrew: Reason not given1
Take Home Period
Participant flow — Take Home Period
MilestoneScreening
Started13
Completed13
Not completed0

Outcome measures

PrimaryAverage Apnea Hypopnea Index Among Different Polysomnography Devices.

The Apnea Hypopnea Index is the number of the apneas and hypopneas during one hour of sleep. The average of these events over one night were compared during each overnight device use.

Time frame:
4 nights
Reported as:
Mean · events per hour
Average Apnea Hypopnea Index Among Different Polysomnography Devices.
events per hourPhilips BiPAP AutoSV Advanced System OneModified Philips BiPAP ASVResMed S7 VPAP AdaptResMed S9 VPAP Adapt
Average Apnea Hypopnea Index Among Different Polysomnography Devices.18.4 ± 23.025.4 ± 2524.1 ± 25.419.2 ± 23.1

Adverse events

Collected over 40 days. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Philips BiPAP AutoSV Advanced System One0/12 (0%)0/12 (0%)1/12 (8.3%)
Modified Philips BiPAP ASV0/13 (0%)0/13 (0%)0/13 (0%)
ResMed S7 VPAP Adapt0/13 (0%)0/13 (0%)3/13 (23.1%)
ResMed S9 VPAP Adapt0/12 (0%)0/12 (0%)0/12 (0%)
Take Home - Modified Philips BiPAP ASV0/13 (0%)0/13 (0%)1/13 (7.7%)
Most frequent other events
Most frequent other events
EventPhilips BiPAP AutoSV Advanced System OneModified Philips BiPAP ASVResMed S7 VPAP AdaptResMed S9 VPAP AdaptTake Home - Modified Philips BiPAP ASV
Paroxysmal Supraventricular TachycardiaCardiac disorders1/120/130/130/120/13
EKG abnormalitiesCardiac disorders0/120/131/130/120/13
seziureNervous system disorders0/120/130/130/121/13
non-sustained ventricular tachycardiaCardiac disorders0/120/131/130/120/13
Supraventricular TachycardiaCardiac disorders0/120/131/130/120/13

Baseline characteristics

Five participants screened failed prior to collecting demographic information.

Age, Categorical
Age, Categorical(Participants)Screening
<=18 years0
Between 18 and 65 years10
>=65 years10
Age, Continuous
Age, Continuous(years)Screening
Mean65.3 ± 12.6
Sex: Female, Male
Sex: Female, Male(Participants)Screening
Female3
Male17
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Screening
Hispanic or Latino0
Not Hispanic or Latino20
Unknown or Not Reported0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Screening
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White20
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Screening
United States20
08

Study locations

1 site
  • University of Arizona School of Medicine
    Tucson, Arizona 85723, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Nov 22, 2016

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 19, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02808338
Lead sponsor
Philips Respironics
Responsible party
Sponsor
First posted
Jun 21, 2016
Start date
Nov 9, 2015
Primary completion
May 31, 2017
Completion
Jul 6, 2017
Results posted
Mar 19, 2019
Last update
Mar 19, 2019

Study contacts

Sairam Parthasarathy, MD
principal investigator · University of Arizona

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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