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

Hemodynamic pressure variables and stroke index.

G C Carlon, W S Howland, P L Goldiner

    Critical Care Medicine
    |January 1, 1978
    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

    Achievement of Reactor-Relevant Performance in Negative Triangularity Shape in the DIII-D Tokamak.

    Physical review letters·2019
    Same author

    Tokamak operation with safety factor q95 < 2 via control of MHD stability.

    Physical review letters·2014
    Same author

    Intravenous urography in acute renal colic.

    The Journal of urology·2010
    Same author

    Urinary extravasation; a study of sixty cases.

    The Journal of urology·2010
    Same author

    Sustained stabilization of the resistive-wall mode by plasma rotation in the DIII-D tokamak.

    Physical review letters·2002
    Same author

    Mechanical ventilation and the diseased lung.

    Critical care medicine·2000
    Same journal

    The authors reply.

    Critical care medicine·2026
    Same journal

    Attracting Emergency Medicine Graduates to Surgical Critical Care Training Programs.

    Critical care medicine·2026
    Same journal

    The authors reply.

    Critical care medicine·2026
    Same journal

    Beyond a Snapshot: Tracking Family Prognostic Expectations in the ICU.

    Critical care medicine·2026
    Same journal

    The authors reply.

    Critical care medicine·2026
    Same journal

    Plasma Levels of Soluble ST2 Reflect Extrapulmonary Organ Dysfunction and Predict Outcomes in Acute Respiratory Failure: Beware of Potential Confounders.

    Critical care medicine·2026
    See all related articles

    This study found that while various heart pressures correlate with each other, they poorly predict stroke index in patients. However, individual analysis and calcium chloride infusion revealed significant correlations under stable anesthesia conditions.

    Area of Science:

    • Cardiology
    • Hemodynamics
    • Anesthesiology

    Background:

    • Understanding the relationship between cardiac pressures and cardiac output is crucial for patient management.
    • Previous studies have explored correlations between different hemodynamic parameters, but findings regarding stroke index have varied.

    Purpose of the Study:

    • To investigate the correlations between right atrial mean pressure, pulmonary artery diastolic pressure, pulmonary artery mean pressure, pulmonary artery wedge pressure, and stroke index in a patient cohort.
    • To assess the impact of calcium chloride infusion on these correlations.
    • To examine pressure-stroke index relationships during stable anesthesia.

    Main Methods:

    • Hemodynamic monitoring in 100 patients, measuring right atrial mean, pulmonary artery diastolic, mean, and wedge pressures, and stroke index.

    Related Experiment Videos

  • Statistical analysis to determine correlations between pressures and stroke index.
  • Observation of pressure-stroke index relationships before and after calcium chloride infusion, and during stable anesthetic states.

    • Main Results:

    • Pulmonary artery pressures and right atrial pressure showed fair inter-correlations but poor correlation with stroke index.
    • Individual patient data analysis improved the correlation between pressures and stroke index.
    • Calcium chloride infusion transiently altered the pressure-stroke index correlation.
    • During stable anesthesia (stable pulmonary vascular resistance, systemic resistance, and myocardial contractility), pulmonary artery mean and wedge pressures significantly correlated with stroke index.

    Conclusions:

    • Right atrial and pulmonary artery pressures have limited predictive value for stroke index in general.
    • Individualized hemodynamic assessment and transient interventions like calcium chloride can influence these relationships.
    • Under controlled anesthetic conditions, specific pulmonary artery pressures become significant predictors of stroke index, highlighting the importance of context in hemodynamic interpretation.