The Diagnostic Benefits of the HyperQTM System in ECG Stress Testing
Recruitment status was Recruiting
|First Received Date ICMJE||March 19, 2007|
|Last Updated Date||February 7, 2013|
|Start Date ICMJE||August 2006|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE
|Original Primary Outcome Measures ICMJE||Same as current|
|Change History||Complete list of historical versions of study NCT00449579 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE||Not Provided|
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||The Diagnostic Benefits of the HyperQTM System in ECG Stress Testing|
|Official Title ICMJE||The Diagnostic Benefits of the HyperQTM System in ECG Stress Testing|
The main objective of this study is to determine the usefulness of the HyperQ™ System in improving the positive predictive value of conventional ECG stress testing.
Patients who are referred for stress test will perform an ECG stress test on a treadmill, with high-frequency ECG recording from conventional 12 leads using BSP's HyperQ™ System. Conventional 12 lead ECG, as well as HyperQ™ recordings will be provided by the HyperQ™ System. The results of the conventional test and the HyperQ™ data will be compared, using one of three cardiac tests (stress echocardiography, SPECT myocardial perfusion imaging and angiography) as gold standards.
Statistical analysis will compare the sensitivity, specificity, PPV and NPV of the conventional and HyperQ™ stress ECG in detecting myocardial ischemia.
The study population will comprise of 1200 patients referred to stress test in three Maccabi clinics or cardiac medical centers. All patients will perform an ECG stress test with high-frequency ECG recording from conventional 12 leads using BSP's HyperQ™ System. The recording will be done without affecting or interfering with any aspect of the normal due course of the test. Standard Bruce protocol or modified Bruce protocol will be used, with standard test termination indications. Two minutes of rest ECG will be recorded prior to stating the protocol.
Following the test, the physician will interpret the test's results in the conventional manner (e.g. ST changes, chest pain, etc) and decide whether the subject should be referred to additional tests.
HyperQ™ data will be analyzed in two phases: (i) Interpretation by the physician in a non-blinded manner one day following the stress test and (ii) after performing all the exercise tests of the study group, blindly to the conventional diagnosis and the HyperQ™ analysis done previously, as well as to other outcomes of imaging procedures. The first HyperQ™ reading will be used to detect the subjects who were positive according to the HyperQ™ system but negative according to the conventional stress testing. These subjects will be referred by the physician to further clinical investigation. The first reading will also be used to assess the physician's interpretation in a scenario that represents a realistic clinical setting, while the second reading will be used to examine the unbiased clinical benefit of HyperQ™ data.
|Study Type ICMJE||Interventional|
|Study Phase||Phase 3|
|Study Design ICMJE||Allocation: Non-Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Screening
|Condition ICMJE||Myocardial Ischemia|
|Intervention ICMJE||Device: Excercise stress test with high frequency ECG recording (HyperQ™ System)|
|Study Arm (s)||Not Provided|
|Publications *||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Recruiting|
|Estimated Enrollment ICMJE||1200|
|Completion Date||October 2007|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
|Ages||45 Years and older|
|Accepts Healthy Volunteers||Yes|
|Listed Location Countries ICMJE||Israel|
|Removed Location Countries|
|NCT Number ICMJE||NCT00449579|
|Other Study ID Numbers ICMJE||MAC_01|
|Has Data Monitoring Committee||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||Assuta Hospital Systems|
|Collaborators ICMJE||BSP Biological Signal Processing Ltd.|
|Information Provided By||Assuta Hospital Systems|
|Verification Date||October 2006|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP