An interventional study of "Chang Gung" Ventricular Systolic Dysfunction Screening Software in Left Ventricular Systolic Dysfunction, sponsored by Chang Gung Memorial Hospital. Completed at 1 site in Taiwan. Open to participants aged 20 Years to 100 Years. Per ClinicalTrials.gov, last updated 2023-10-12.
Sponsored by Chang Gung Memorial Hospital · Not applicable, Interventional, and Diagnostic
The purpose of this research is to test a software tool called the "Chang Gung" Ventricular Systolic Dysfunction screening software, which uses a 12-lead electrocardiogram to determine if a patient has left ventricular systolic dysfunction. The goal is to determine if the software can accurately identify patients with this condition, which would help doctors diagnose and treat it more effectively.
The trial will involve using the software on patients and comparing its results to those obtained through echocardiograms, which are currently the gold standard for diagnosing left ventricular systolic dysfunction. Only patients who meet specific eligibility criteria will be able to participate in the trial, and the software will be administered by trained healthcare professionals.
The study will help determine if the software is a useful tool for diagnosing left ventricular systolic dysfunction, which could lead to earlier diagnosis and better outcomes for patients. The research team will collect and analyze data on the accuracy of the software and its usability in clinical practice.
Overall, this study will provide important information for doctors and patients about a new tool for diagnosing left ventricular systolic dysfunction.
This is a retrospective study conducted in Taiwan that aimed to test the performance of "Chang Gung" Ventricular Systolic Dysfunction screening software using electrocardiogram (ECG) and echocardiography data. The study data was obtained from a database that includes six hospitals of Chang Gung Memorial Hospital, between January 1, 2006, and December 31, 2019.
The software was developed using a training set of 133,225 data and validated using a set of 57,134 data. For clinical validation, a total of 1,172 test data were randomly selected from the testing set, stratified by hospital classification, age group and gender. The hospital classification, age group and gender ratios were based on the proportion of the testing data. The test data were also stratified by the presence or absence of left ventricular systolic dysfunction(LVSD) for test group and control group, defined as a heart output rate of less than 40% within 14 days before and after the ECG recording.
During the clinical trial, a cardiologist with 15 years of experience in treating cardiovascular disease examined the ECG data without any exclusion criteria. The cardiologist also confirmed the accuracy of the left ventricular ejection fraction (LVEF) measurement, which was defined as LVSD in the echocardiography reports. The LVEF was extracted from legally-binding echocardiography reports, not by the cardiologist during the clinical trial. The ECG data were screened and filtered for quality before being input into the software. The primary outcome was the sensitivity of the software, which was defined as not inferior to 0.86. The study also analyzed secondary outcome measures, including the area under the receiver operating characteristic curve, accuracy, specificity, positive predictive value, negative predictive value, false-positive rate, and false-negative rate.
255 studies on the registry are indexed under Ventricular Dysfunction, Left; 53 are open to participants now.
This study's enrollment of 1,172 is above the median of 99 across 150 interventional studies indexed under Ventricular Dysfunction, Left.
Browse Ventricular Dysfunction, Left studies →Chang Gung Memorial Hospital is the lead sponsor of 1,064 studies on the registry; 235 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Software diagnosis with gold standard of echocardiography.
Device: "Chang Gung" Ventricular Systolic Dysfunction Screening Software
This software is suitable for 12-lead ECG signals of adults over 20 years old, and assists doctors in screening patients for left ventricular systolic dysfunction.
Sensitivity
The rate of test results that correctly indicate the presence.
Time frame: baseline
Specificity
The rate of test results that correctly indicate the absence.
Time frame: Baseline
Accuracy
The rate of all test results that correctly indicated.
Time frame: Baseline
Area Under the receiver operating characteristic Curve
A graphical plot that illustrates the diagnostic ability of a binary classifier system as its discrimination threshold is varied.
Time frame: Baseline
Positive predictive value
The proportions of positive results in statistics and diagnostic tests that are true positive results
Time frame: Baseline
Negative predictive value
The proportions of negative results in statistics and diagnostic tests that are true negative results
Time frame: Baseline
False positive rate
The rate of test result which wrongly indicates that a particular condition or attribute is present
Time frame: Baseline
False negative rate
The rate of test result which wrongly indicates that a particular condition or attribute is absent
Time frame: Baseline
Plan to share: No
This study is completed, as verified in May 2023. You cannot join it, but the record below documents what was studied.
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Ventricular Dysfunction, Left→
Chang Gung Memorial Hospital