Left Atrial Volume Index and Left Atrial Appendage Flow Velocities

July 14, 2015 updated by: Elsayed Abo-Salem, University of Cincinnati
After obtaining a consent, bed side cardiac ultrasonography will be performed for cases undergoing transesophageal echocardiography to evaluate the correlation between left atrium volume and left atrial appendage flow velocity which can predict the thrombosis risk.

Study Overview

Status

Unknown

Conditions

Detailed Description

Informed consent will be obtained prior to any research related procedures Prior to performing the transesophageal echocardiography, 4 and a 2-chamber transthoracic images will be obtained to perform standard left atrial volumetric assessment as well as speckle tracking interrogation. Both these procedures will be performed offline. The transesophageal echocardiography will be performed using available equipment with a 5- to 7-megaHertz multiplane transducer and according to standard of care. All images will be acquired per American Society of Echocardiography guidelines and will be recorded for further analysis. The left atrial appendage will be best visualized in the 60, 90 and 110 degree imaging planes and left atrial appendage contraction velocity will be recorded by placing a pulsed wave Doppler sample volume inside the proximal third of the left atrial appendage at each angle. In addition, images will be recorded using a 3-beat cycle capture to later perform offline velocity vector imaging analysis for left atrial appendage speckle tracking analysis. The transthoracic echocardiography will be performed just before the transesophageal echocardiography examination using a 2- to 4-megaHertz transducer and according to standard practice guidelines. The following echocardiographic variables will be prospectively measured and calculated: left ventricle ejection fraction using Simpson method, left atrial volume will be measured using biplane method and left atrium volume index is calculated based on body surface area. Tissue Doppler images of mitral valve annulus will be measured and Pulsed wave Doppler of mitral inflow velocity.

Study does not include follow up. Study duration is up to 24 months

Study Type

Observational

Enrollment (Anticipated)

150

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Ohio
      • Cincinnati, Ohio, United States, 45267
        • University of Cincinnati Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Patients referred for transesophageal echocardiography

Description

Inclusion Criteria:

  • Study will include all patients 18-80 years of age and referred for transesophageal evaluation of left atrium or left atrium appendage for appropriate clinical indications, at the University of Cincinnati University Medical Center and VA Medical Center.

Exclusion Criteria:

  • Patients with either moderate to sever mitral valve disease or previous prosthetic mitral replacement.
  • Patients with acute heart failure
  • History of previous left atrium appendage surgical intervention.
  • Pregnant women

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Transesophageal echocardiography
Patients referred for transesophageal echocardiography for a clinical indication

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Correlation between left atrium volume index and Left atrial appendage flow velocity
Time Frame: Day 1
Day 1

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Cincinnati

Investigators

  • Principal Investigator: David Harris, University of Cincinnati

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2015

Primary Completion (Anticipated)

July 1, 2017

Study Completion (Anticipated)

July 1, 2017

Study Registration Dates

First Submitted

September 2, 2014

First Submitted That Met QC Criteria

July 14, 2015

First Posted (Estimate)

July 16, 2015

Study Record Updates

Last Update Posted (Estimate)

July 16, 2015

Last Update Submitted That Met QC Criteria

July 14, 2015

Last Verified

July 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • LAA velocity & LA volume

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Thrombosis of Left Atrial Appendage

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in India

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe