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Emergency Department Assessment of Right Ventricular Function and Size in the Post Cardiac Arrest Patient

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. Identifier: NCT03309852
Recruitment Status : Recruiting
First Posted : October 16, 2017
Last Update Posted : April 17, 2019
University of British Columbia
Queen's University, Kingston, Ontario
Information provided by (Responsible Party):
Tomislav Jelic, University of Manitoba

Brief Summary:
The right side of the heart of often overlooked in patients who are acutely unwell, as the main area of focus when performing echocardiography tends to be the left ventricle. The right ventricle can yield important diagnostic clues that can aid the clinician, particularly in cases where one may suspect elevated right sided pressures, such as those due to a pulmonary embolus. Although it is taught that a dilated right ventricle is associated in patients with pulmonary embolus, but in patients with spontaneous circulation. What is unknown is patients who sustain a cardiac arrest, does the same hold true. There is a paucity of literature surrounding the appearance of the right ventricle in the cardiac arrest patient acutely. This study aims to assess right ventricular size and function in the immediate post cardiac arrest phase.

Condition or disease
Right Ventricular Dysfunction Cardiac Arrest

Detailed Description:

The use of point of care ultrasound (PoCUS) has grown rapidly. The incorporation of PoCUS in the assessment of patients in shock and to identify a reversible etiology to a patients cardiac arrest is widely practiced and endorsed by several organizations. While often overlooked, the right ventricle (RV) plays a critical role and often can provide clues to the etiology of a patient who is in shock. The right ventricle is very unique, as its anatomic structure, and function are markedly different then the left ventricle. What is often assessed is the size of the right ventricle. If dilated, which is defined as being >0.6 times that of the left ventricle, this could be indicative of elevated right sided pressures. In the right clinical context this may be caused by an acute pulmonary embolus. While this particular finding may raise clinical suspicion of acute right ventricular strain, point of care ultrasound cannot safely rule out acute pulmonary embolism. Several publications demonstrate the use of thrombolytics if a dilated RV is seen on PoCUS. This applies in patients with cardiac function who have not sustained a cardiac arrest. But in those patients who do sustain a cardiac arrest, these patients fall into a black hole of PoCUS findings related to the right ventricle. The international liaison committee on resuscitation has urged caution due to the unknown PoCUS findings during cardiac arrest. If one were to presume a dilated RV in a setting of a patient who sustained cardiac arrest was due to a pulmonary embolus, thrombolytics would be indicated. However, exposing the patient to thrombolytics, which in themselves carry a hemorrhage risk of 20%, is not a benign decision. Thus PoCUS findings as they pertain to the RV, in patient who sustain a cardiac arrest are unknown how they clinically correlate. Literature from critical care demonstrates that the right ventricle dilates, exhibits RV dysfunction, and carries a worse prognosis then that of the left ventricle. Recent animal data suggests that RV dilatation does occur in a porcine induced cardiac arrest model. To date, no human assessment of RV function and size in the immediate post-arrest state exists, and clearly a need to study this is evident.

objectives and hypothesis Objectives To assess the right ventricular function and size in patients who are immediately post-arrest patients.

Hypothesis Our hypothesis is that right ventricular dysfunction and dilatation is prevalent in the patients who are in cardiac arrest and in the post-cardiac arrest patient population, irrespective of they etiology of their cardiac arrest.

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Study Type : Observational
Estimated Enrollment : 50 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Emergency Department Assessment of Right Ventricular Function and Size in the Post Cardiac Arrest Patient
Actual Study Start Date : October 6, 2017
Estimated Primary Completion Date : October 5, 2020
Estimated Study Completion Date : October 6, 2020

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Cardiac Arrest

Primary Outcome Measures :
  1. Right ventricular dysfunction [ Time Frame: 12 months ]
    Assessment of RV dysfunction in post cardiac arrest patients.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Sampling Method:   Non-Probability Sample
Study Population
Post cardiac arrest patients.

Inclusion Criteria:

  • Any post cardiac arrest patient who achieves return of spontaneous circulation that can have their RV assessed with point of care echo cardiography within 1 hour of ROSC.

Exclusion Criteria:

  • Significant hemodynamic instability, pregnancy, incarcerated patients, age <18.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03309852

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Contact: Tomislav Jelic, MD 2048990802

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Canada, Manitoba
Health Sciences Centre Recruiting
Winnipeg, Manitoba, Canada, R3A1R9
Contact: Tomislav Jelic, MD    2048990802   
Sponsors and Collaborators
University of Manitoba
University of British Columbia
Queen's University, Kingston, Ontario
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Principal Investigator: Tomislav Jelic, MD University of Manitoba, Health Sciences Centre
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Responsible Party: Tomislav Jelic, Assistant Professor of Emergency Medicine, University of Manitoba Identifier: NCT03309852    
Other Study ID Numbers: B2017:104
First Posted: October 16, 2017    Key Record Dates
Last Update Posted: April 17, 2019
Last Verified: April 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Heart Arrest
Ventricular Dysfunction
Ventricular Dysfunction, Right
Disease Attributes
Pathologic Processes
Heart Diseases
Cardiovascular Diseases