Jove
Visualize
Contact Us

Related Experiment Videos

Respirator paradox.

J J Rick, S S Burke

    Southern Medical Journal
    |November 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Reverse pulsus paradoxus, or respirator paradox, occurs when blood pressure unexpectedly increases with inspiration during mechanical ventilation. This phenomenon, observed in intensive care patients, may complicate diagnoses like cardiac tamponade.

    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

    Pastoral care for perinatal and neonatal health care providers.

    Journal of obstetric, gynecologic, and neonatal nursing : JOGNN·1999
    Same author

    Gender differences of young adults with schizophrenic disorders in community care.

    Schizophrenia bulletin·1990
    Same author

    Characteristics of young adults with schizophrenic disorders treated in the community.

    Hospital & community psychiatry·1985
    Same author

    The effect of nitrofen [4-(2,4-dichlorophenoxy)nitrobenzene] on the reproductive performance of male rats.

    Toxicology·1983
    Same author

    The effects on rat pups when nitrofen (4-(2,4-dichlorophenoxy)nitrobenzene) was applied dermally to the dam during organogenesis.

    Toxicology·1983
    Same author

    Computers in the ICU.

    Southern medical journal·1979
    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

    Area of Science:

    • Critical Care Medicine
    • Cardiology
    • Respiratory Physiology

    Background:

    • Massumi described reverse pulsus paradoxus in 1973, noting reversed blood pressure variations during respiration.
    • This phenomenon was observed in patients receiving intermittent positive pressure ventilation (IPPV), with or without positive end-expiratory pressure (PEEP).
    • The condition has been documented in various intensive care unit (ICU) patient populations.

    Purpose of the Study:

    • To describe the occurrence of respirator paradox in ICU patients on IPPV.
    • To propose a theoretical mechanism for respirator paradox.
    • To highlight the diagnostic challenges posed by respirator paradox, particularly after cardiac surgery.

    Main Methods:

    • Observational study of intensive care patients receiving IPPV.

    Related Experiment Videos

  • Review of clinical cases exhibiting reversed pulsus paradoxus.
  • Theoretical analysis of potential mechanisms, focusing on afterload changes.

    • Main Results:

    • Respirator paradox was observed in ICU patients on IPPV, irrespective of PEEP.
    • A theoretical mechanism involving afterload alterations is proposed.
    • The occurrence of respirator paradox can complicate the early diagnosis of cardiac tamponade post-open heart surgery.

    Conclusions:

    • Respirator paradox is a recognized phenomenon in mechanically ventilated patients.
    • Changes in afterload may explain the mechanism of respirator paradox.
    • This finding has implications for diagnosing cardiac tamponade in post-operative cardiac surgery patients.