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AutoVPAP Versus VPAP; Assessment of Sleep and Ventilation

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00252252
Recruitment Status : Completed
First Posted : November 11, 2005
Last Update Posted : June 24, 2008
Royal Brompton & Harefield NHS Foundation Trust
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Brief Summary:
The aim of the study is to compare the effects of a modified form (AutoVPAP) of the VPAP non-invasive ventilator versus standard VPAP ventilation on sleep quality and breathing during sleep in stable patients with nocturnal hypoventilation due to restrictive ventilatory disorders (eg. neuromuscular disease or chest wall disorder).

Condition or disease Intervention/treatment Phase
Chest Wall Disorder Neuromuscular Disease Device: VPAP non-invasive ventilator Device: AutoVPAP non-invasive ventilator Phase 1

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 20 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Crossover Trial of VPAP (Variable Positive Airway Pressure) Ventilation Versus AutoVPAP in Neuromuscular and Chest Wall Disease: Effects on Nocturnal Hypoventilation, Sleep Quality and Tolerance
Study Start Date : November 2005
Actual Primary Completion Date : June 2007
Actual Study Completion Date : December 2007

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. Compare objective measures of sleep, sleep related ventilation and daytime respiratory function between the two treatment devices, VPAP and AutoVPAP.

Secondary Outcome Measures :
  1. Compare tolerance of AutoVPAP versus standard VPAP
  2. Compare effects on overnight heart rate variation (as a measure of autonomic stress)
  3. Measure of hours of use of device
  4. Measure of effect on daytime sleepiness

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients aged 18-80 years
  • Nocturnal hypoventilation (nocturnal peak transcutaneous PCO2 > 6.5 kPa when breathing spontaneously) with
  • Congenital neuromuscular disease (eg. Duchenne muscular dystrophy, congenital muscular dystrophy), acquired neuromuscular disease (eg. old polio, bilateral diaphragm paralysis) or chest wall disease (eg. idiopathic scoliosis, thoracoplasty)
  • Recruited from 1300 patients attending Royal Brompton Hospital Lind ward ventilator clinic.
  • All patients will be familiar with non-invasive ventilation use but currently using a ventilator which is not a VPAP model eg. BiPAP Harmony, Breas PV403.
  • Able to understand treatment and protocol

Exclusion Criteria:

  • Unstable respiratory failure (PaO2 < 7.5 kPa, PaCO2 > 8.0 kPa,
  • Uncontrolled heart failure or arrhythmia
  • Moderate or severe bulbar weakness.
  • Unable to understand treatment or protocol

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00252252

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United Kingdom
Royal Brompton Hospital
London, Greater London, United Kingdom, SW3 6NP
Sponsors and Collaborators
Royal Brompton & Harefield NHS Foundation Trust
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Principal Investigator: Anita Simonds, MD, FRCP Royal Brompton & Harefield NHS Foundation Trust
Publications automatically indexed to this study by Identifier (NCT Number):
Layout table for additonal information Identifier: NCT00252252    
Other Study ID Numbers: 2005LF009B
REC Ref No 05/Q0404/001
First Posted: November 11, 2005    Key Record Dates
Last Update Posted: June 24, 2008
Last Verified: June 2008
Additional relevant MeSH terms:
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Neuromuscular Diseases
Nervous System Diseases