The purpose of this study was to assess the safety and efficacy of Lumason-enhanced dobutamine stress echo (DSE) in subjects having a suboptimal left ventricular endocardial border delineation (LV EBD) at rest and who were scheduled for coronary angiography.
The study was designed to assess the safety and efficacy of Lumason at improving the visualization of the LV EBD during pharmacologic stress echocardiography examinations and for detection or exclusion of the coronary artery disease (CAD). The study population consisted of adult subjects referred for pharmacological stress echocardiography and with suboptimal image quality during unenhanced ultrasound imaging at rest who had known or suspected CAD. Subjects enrolled in the study represented subjects who could benefit most from CEUS stress echocardiography.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
174
Lumason (sulfur hexafluoride-type A microspheres) an ultrasound contrast agent was administered as 2 single 2-mL IV injections during rest and stress echocardiography
Coastal Multi-Specialty Research, Coastal Heart Medical Group
Santa Ana, California, United States
Alfieri Cardiology
Wilmington, Delaware, United States
Homestead Cardiac and Vein Center
Homestead, Florida, United States
Sensitivity and Specificity of Lumason Enhanced Dobutamine Stress Echo (DSE) for Detection or Exclusion of Coronary Artery Disease (CAD)
The diagnostic performance of the echocardiographic images was compared to the truth standard to determine sensitivity and specificity. A diagnosis of CAD was determined for both the echo images and truth standard (positive diagnosis for CAD is defined as \>/= 50% stenosis of any vessel on coronary angiography or if no coronary angiography was performed the occurence of a cardiac event based on clinical information for up to 6 months post dose; otherwise the diagnosis was negative). Results for sensitivity and specificity are reflected based on difference between contrast enhanced stress echo and unenhanced stress echo. Results for analysis of data based on majority assessment from the three off-site blinded readers are presented. Sensitivity and specificity are the percentages of correctly diagnosed subjects by stress echo over the total positive and negative subjects according to the truth standard respectively.
Time frame: Participants were followed until they had coronary angiography or up to 6 months post dose to collect clinical information on cardiac events if no coronary angiography were performed
Reader-Specific Percentages of Participants Identified as Having a Critical Shift From Suboptimal to Optimal Echocardiographic Images
The percentage of subjects with suboptimal images (defined as \>= 2 adjacent segments with inadequate LV EBD in any of the 3 apical views) at unenhanced stress echo converted to adequate (reduction of suboptimal segments in any of the 3 apical views) at contrast-enhanced stress echo
Time frame: Participants were followed until they had coronary angiography or up to 6 months post dose to collect clinical information on cardiac events if no coronary angiography was performed
Change in Total LV EBD
Measured as the change in the total LV EBD score based on the 17 segments, from peak stress unenhanced vs. peak stress contrast-enhanced. Total LV EBD score ranges from 0 to 34 and higher score is better outcome.
Time frame: Participants were followed until they had coronary angiography or up to 6 months post dose to collect clinical information on cardiac events if no coronary angiography was performed
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Ochsner Clinic Foundation
New Orleans, Louisiana, United States
St. Louis University Hospital
St Louis, Missouri, United States
University of Nebraska Medical Center
Omaha, Nebraska, United States
Duke University Medical Center Cardiac Diagnostic Unit
Durham, North Carolina, United States
University of Texas Medical Branch at Galveston
Galveston, Texas, United States
Cliniques Universitaires Saint-Luc Unité de Pathologie Cardio-Vasculaire / Cardiologie
Brussels, Belgium
Antwerp University Hospital
Edegem, Belgium
...and 3 more locations
Number of Participants With Adverse Events
To obtain safety data in subjects administered Lumason during echocardiography
Time frame: 72 hours post dose