Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

[Technical differences in various CPAP and BiLevel CPAP devices]

N Netzer1, G Kirbas, H Matthys

  • 1Medizinische Universitätsklinik Freiburg, Abteilung Pneumologie, Freiburg.

Pneumologie (Stuttgart, Germany)
|August 1, 1997
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Diagnosis of chronic obstructive pulmonary disease (COPD) in older patients : Consensus statement of the Working Group on Pneumology in Older Patients.

Zeitschrift fur Gerontologie und Geriatrie·2025
Same author

[Recommendations for the Treatment of Elderly Patients with COVID-19 from the Taskforce for Gerontopneumology].

Pneumologie (Stuttgart, Germany)·2020
Same author

Abnormal things happening during sleep: parasomnias.

Zeitschrift fur Gerontologie und Geriatrie·2020
Same author

Fifth metacarpal instability and its effect on hamatometacarpal arthritis patterns-a cadaver study.

Hand surgery & rehabilitation·2019
Same author

[Sleep at Altitude].

Pneumologie (Stuttgart, Germany)·2017
Same author

Assessment of the effect of pharmacotherapy in common cold/acute bronchitis - the Bronchitis Severity Scale (BSS).

Pneumologie (Stuttgart, Germany)·2014
Same journal

[Comparative analysis of drug therapy for fibrotic interstitial lung diseases based on results of phase 3 study].

Pneumologie (Stuttgart, Germany)·2026
Same journal

Catamenial pneumothorax complicated by massive right diaphragmatic hernia with solid organ herniation.

Pneumologie (Stuttgart, Germany)·2026
Same journal

Pneumologie (Stuttgart, Germany)·2026
Same journal

Aerosol therapy during noninvasive ventilation (NIV) and nasal high-flow therapy (HFT): current technology and consensus-based recommendations.

Pneumologie (Stuttgart, Germany)·2026
Same journal

[Correction: Pharmacotherapy for Tobacco Dependence: Implementation of the Current G-BA Resolution - Erratum: Information from Section E3 of the DGP regarding the G-BA Resolution].

Pneumologie (Stuttgart, Germany)·2026
Same journal

[Pharmacotherapy for Tobacco Dependence: Implementation of the Current G-BA Resolution - Information from Section E3 of the DGP regarding the G-BA Resolution].

Pneumologie (Stuttgart, Germany)·2026
See all related articles

Continuous positive airway pressure (CPAP) and BiLevel CPAP devices show significant technical variations in pressure stability and noise. These differences in CPAP machines necessitate careful consideration during prescription for sleep apnea patients.

Area of Science:

  • Biomedical Engineering
  • Respiratory Medicine

Context:

  • Continuous positive airway pressure (CPAP) and BiLevel CPAP are standard treatments for obstructive sleep apnea syndrome.
  • Numerous CPAP and BiLevel devices exist, yet technical variations may impact efficacy.
  • Previous studies on device differences are limited, necessitating further investigation.

Purpose:

  • To investigate and quantify technical differences between various CPAP and BiLevel CPAP devices.
  • To assess variations in pressure stability, noise emission, and response time under static conditions.
  • To compare the construction and materials of different CPAP and BiLevel devices.

Summary:

  • Significant variations in pressure stability were observed across CPAP (8.7–15.6 mbar) and BiLevel (9–9.7 mbar) devices at 10 mbar and 1 L/sec inspiration flow.

Related Experiment Videos

  • Noise emissions ranged from 29.6–39.9 dB (CPAP) and 30.4–42.2 dB (BiLevel) at 10 mbar.
  • Time to reach target pressure varied from 0.26–0.66 sec (CPAP) and 0.46–0.80 sec (BiLevel).

    • Impact:

    • Technical differences in CPAP and BiLevel devices are substantial and linked to variations in turbine and engine construction.
    • These quality differences should be a key consideration for clinicians prescribing sleep apnea devices.
    • Device selection requires careful evaluation to ensure optimal patient outcomes.