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

High frequency oscillators with adjustable waveforms: practical aspects.

L Freitag1, M Schroer, J Bremme

  • 1Arzt für Lungen- und Bronchialheikunde, Ruhrlandklinik, Essen, F.R.G.

British Journal of Anaesthesia
|January 1, 1989
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

KOH 5% solution versus diclofenac 3% for the treatment of actinic keratosis - Results from a three-armed RCT.

Journal of the European Academy of Dermatology and Venereology : JEADV·2025
Same author

Structure and dynamics of the radical cation of ethane arising from the Jahn-Teller and pseudo-Jahn-Teller effects.

Physical chemistry chemical physics : PCCP·2017
Same author

Efficient utilization of EBUS-TBNA samples for both diagnosis and molecular analyses.

OncoTargets and therapy·2014
Same author

[Role of pretherapeutic biomarkers in lung cancer with special regards to bronchoscopic procedures].

Pneumologie (Stuttgart, Germany)·2014
Same author

[Evaluation of intrauterine death: importance of examination of fetal, placental and maternal factors].

Der Pathologe·2013
Same author

Assessment of SHOX2 methylation in EBUS-TBNA specimen improves accuracy in lung cancer staging.

Annals of oncology : official journal of the European Society for Medical Oncology·2013
Same journal

Global environmental and geo-economic impact of conservative versus liberal oxygen strategies in mechanically ventilated critically ill adults: an ecological country-level analysis.

British journal of anaesthesia·2026
Same journal

South African Paediatric Surgical Outcomes Study-2 (SAPSOS-2): a prospective multi-centre pre-post study evaluating haemoglobin response to oral iron for iron-deficiency anaemia in children undergoing elective noncardiac surgery.

British journal of anaesthesia·2026
Same journal

Intravenous iron administration and management of adverse events: a systematic review and Network for the Advancement of Patient Blood Management, Haemostasis and Thrombosis consensus recommendations.

British journal of anaesthesia·2026
Same journal

Eye-tracking technology applied to regional anaesthesia task performance, safety and skill acquisition: a scoping review.

British journal of anaesthesia·2026
Same journal

The long and winding road: a longitudinal study of UK anaesthetists in training.

British journal of anaesthesia·2026
Same journal

Hypotension and pulmonary atelectasis during general anaesthesia: a randomised crossover laboratory study.

British journal of anaesthesia·2026
See all related articles

Modifying high-frequency ventilators to produce non-sinusoidal waveforms aids in clearing airway secretions. Despite engineering challenges, this high-frequency ventilation (HFV) technology shows promise for patient relief.

Area of Science:

  • Biomedical Engineering
  • Respiratory Medicine

Background:

  • High-frequency ventilation (HFV) is an advanced mechanical ventilation technique.
  • Conventional HFV often produces sinusoidal waveforms, which may not be optimal for all respiratory conditions.

Purpose of the Study:

  • To investigate the modification of high-frequency oscillators to generate non-sinusoidal flow patterns.
  • To assess the clinical utility and patient acceptance of such modified devices.

Main Methods:

  • Modification of existing high-frequency oscillator types to achieve non-sinusoidal waveforms.
  • Clinical application in patients with bronchiectasis using a modified linear motor piston device.
  • Qualitative assessment of patient experience and symptom relief.

Related Experiment Videos

Main Results:

  • Successfully modified oscillators to produce non-sinusoidal flow patterns.
  • Demonstrated efficacy in clearing purulent sputum in bronchiectasis patients.
  • Patients reported significant relief and accepted the device despite its unsophisticated appearance and noise.

Conclusions:

  • Adjusting waveform is a valuable feature for high-frequency ventilators.
  • Despite engineering limitations (size, noise, power requirements), HFV technology with modified waveforms offers therapeutic benefits.
  • Continued research and development in HFV technology are warranted.