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

Inspired air temperature with immersion heater humidifiers

K P Geevarghese, J A Aldrete, T C Patel

    Anesthesia and Analgesia
    |May 1, 1976
    PubMed
    Summary

    Two types of immersion heater humidifiers were tested for aerosol mixture temperature delivery. Fixed-temperature models were consistent but often too hot, while reset-feature models were unreliable for precise temperature control.

    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

    Pain on injection from propofol may be avoided by changing its formulation.

    Acta anaesthesiologica Scandinavica·2009
    Same author

    Chronic adhesive arachnoiditis.

    British journal of anaesthesia·2004
    Same author

    Post-dural puncture headache: pathogenesis, prevention and treatment.

    British journal of anaesthesia·2004
    Same author

    Myelopathy with syringomyelia following thoracic epidural anaesthesia.

    Anaesthesia and intensive care·2004
    Same author

    Evaluation of the future supply and demand for blood products in the United Kingdom National Health Service.

    Transfusion medicine (Oxford, England)·2004
    Same author

    Recurrent neurological symptoms in a patient after repeat combined spinal and epidural anaesthesia.

    British journal of anaesthesia·2003

    Area of Science:

    • Respiratory Therapy
    • Biomedical Engineering
    • Medical Device Technology

    Background:

    • Accurate temperature control of inhaled aerosols is crucial for patient safety and therapeutic efficacy.
    • Immersion heater humidifiers are commonly used to deliver warmed and humidified gases.
    • Variations in delivered gas temperature can impact respiratory function and patient outcomes.

    Purpose of the Study:

    • To evaluate the temperature consistency and accuracy of aerosol mixtures delivered by two types of immersion heater humidifiers.
    • To assess the performance of fixed-temperature versus temperature-reset immersion heaters.
    • To determine if delivered air temperatures meet clinical requirements, particularly the desired 37°C.

    Main Methods:

    • Monitoring the temperature of aerosol mixtures at multiple points along the delivery tube.

    Related Experiment Videos

  • Utilizing two distinct types of immersion heater humidifiers: fixed-temperature and temperature-reset models.
  • Comparing measured temperatures against desired clinical parameters, specifically >37°C.

    • Main Results:

    • Delivered gas temperature predictably decreased from the aerosol generator to the patient's T-adaptor.
    • Fixed-temperature immersion heaters demonstrated consistent performance but frequently exceeded the target temperature (>37°C).
    • Immersion heaters with temperature reset features exhibited unreliability, consistently producing higher-than-set temperatures.

    Conclusions:

    • Fixed-temperature immersion heaters offer reliability but may require adjustment to avoid hyperthermia.
    • Temperature-reset immersion heaters pose a risk due to their inherent unreliability and tendency to overheat.
    • Clinical use of these humidifiers necessitates careful monitoring to ensure safe and effective aerosol delivery temperatures.