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

A new ventilator for closed breathing systems.

A Twigley, M K Chakrabarti, J G Whitwam

    Anaesthesia
    |April 1, 1987
    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

    Heat killed multi-serotype Shigella immunogens induced humoral immunity and protection against heterologous challenge in rabbit model.

    Immunobiology·2015
    Same author

    Ecology ofVibrio cholerae in the freshwater environs of Calcutta, India.

    Microbial ecology·2013
    Same author

    Role of Shigella flexneri 2a 34 kDa outer membrane protein in induction of protective immune response.

    Vaccine·2006
    Same author

    Enterotoxigenicity of mature 45-kilodalton and processed 35-kilodalton forms of hemagglutinin protease purified from a cholera toxin gene-negative Vibrio cholerae non-O1, non-O139 strain.

    Infection and immunity·2006
    Same author

    Protective efficacy of oral immunization with heat-killed Shigella flexneri 2a in animal model: study of cross protection, immune response and antigenic recognition.

    Vaccine·2003
    Same author

    Zinc supplementation as adjunct therapy in children with measles accompanied by pneumonia: a double-blind, randomized controlled trial.

    The American journal of clinical nutrition·2002
    Same journal

    Pulmonary artery catheters or central venous catheters for cardiac surgery: the PUMA Pilot randomised clinical trial.

    Anaesthesia·2026
    Same journal

    Opioid-free vs. opioid-inclusive anaesthesia with or without regional anaesthesia for postoperative pain.

    Anaesthesia·2026
    Same journal

    Optimal dose of intra-operative dexmedetomidine for postoperative delirium prevention: a reply.

    Anaesthesia·2026
    Same journal

    Optimal dose of intra-operative dexmedetomidine for postoperative delirium prevention.

    Anaesthesia·2026
    Same journal

    Pain control or brain protection with esketamine: a reply.

    Anaesthesia·2026
    Same journal

    A step forward for patient-centred fasting guidelines: a reply.

    Anaesthesia·2026
    See all related articles

    A new electronic ventilator (OAV7700, Ohmeda) is effective for closed breathing system anesthesia. Optimal conditions were achieved with a 1 litre/minute fresh gas flow, ensuring carbon dioxide homeostasis.

    Area of Science:

    • Anesthesiology
    • Medical Devices
    • Respiratory Care

    Background:

    • Closed breathing system anesthesia requires precise control of anesthetic gas delivery.
    • Conventional ventilators may present limitations in ease of use and integration.
    • The OAV7700 electronic ventilator offers a novel solution for modern anesthesia delivery.

    Purpose of the Study:

    • To describe a new electronic ventilator, the OAV7700 (Ohmeda), for closed breathing system anesthesia.
    • To evaluate its usability and performance in maintaining carbon dioxide homeostasis.
    • To determine optimal fresh gas flow rates and delivery points for this ventilator.

    Main Methods:

    • Description of the OAV7700 ventilator's features, including its control panel, alarms, and autoclavable breathing system.

    Related Experiment Videos

  • Observation of seven patients undergoing major surgery using the OAV7700.
  • Administration of anesthetic gases at 1, 2, and 4 litres/minute at different points in the breathing system (closed system, ventilator, tracheal tube).

    • Main Results:

    • The OAV7700 ventilator is easy to use and compatible with conventional anesthesia machines.
    • Carbon dioxide homeostasis was successfully maintained across all tested fresh gas flow rates and delivery points.
    • Fresh gas flows of 2 and 4 litres/minute delivered into the tracheal tube resulted in a small but significant reduction in mean tidal volume.

    Conclusions:

    • The OAV7700 electronic ventilator is a user-friendly device suitable for closed breathing system anesthesia.
    • A fresh gas flow of 1 litre/minute, delivered conventionally to the closed system or ventilator, provides optimal conditions for anesthesia.
    • The ventilator effectively maintains carbon dioxide homeostasis during surgical procedures.