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Imaging Cardiac Electrical Remodeling With Electrocardiogram Imaging (ECGI)
NCT00785564 · View on ClinicalTrials.gov ↗
Study Summary
A consequence of chronic RV pacing is a process of electrical remodeling that alters myocardial repolarization to reflect the altered depolarization induced by the RV lead. When RV pacing is discontinued, the altered repolarization persists for several weeks. This phenomena is traditionally described as "T-wave memory" based upon the 12-lead ECG appearance of inverted T-Waves. The investigators are using the ECGI technique to produce three dimensional electroanatomical images of this phenomena in patients with dual chamber pacemakers. Echocardiography will also be used to image the mechanical effects of RV pacing and T-wave memory. The images will show the spatial distribution of altered repolarization and allow us to correlate any mechanical consequences of this phenomena that may exist.
Conditions Studied
Study Locations (1)
Missouri
- Washington University School of Medicine — St Louis
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 13 participants |
| Start Date | 2007-11 |
| Est. Completion | 2011-09 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT00785564
The ClinicalTrials.gov registry entry for NCT00785564 describes a study currently listed as completed. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 13 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Washington University School of Medicine, which has 1,036 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Sick Sinus Syndrome appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT00785564 reports 1 study location spanning 1 distinct geographic area — top geographies include Missouri. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT00785564 about?
NCT00785564 is a clinical study titled "Imaging Cardiac Electrical Remodeling With Electrocardiogram Imaging (ECGI)". A consequence of chronic RV pacing is a process of electrical remodeling that alters myocardial repolarization to reflect the altered depolarization induced by the RV lead. When RV pacing is discontinued, the altered repolarization persists for several weeks. This phenomena is traditionally describe...
What is the current status of trial NCT00785564?
This trial is currently completed. The enrollment target is 13 participants. The study started on 2007-11. Estimated completion is 2011-09.
What conditions does trial NCT00785564 study?
This clinical trial studies the following conditions: Sick Sinus Syndrome. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT00785564?
This trial is sponsored by Washington University School of Medicine, which has 1,036 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT00785564 being conducted?
This trial has 1 study location across Missouri. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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