ICDNCT00890461
Reconstruction of 12-Lead Electrogram From Intracardiac Signals From Defibrillators During or After Implantation
An observational study of ICD, run by University of Pittsburgh at 2 sites in United States.
Trial summary
The purpose of this study is to reconstruct a 12-lead electrocardiogram (ECG) from intracardiac (IC) electrograms (EGM) obtained from defibrillator devices (ICD). The purpose of such a reconstruction is to allow the use of IC EGM for diagnosis of clinical conditions for which ECG have historically been used, and to… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- ICD
- What is being tested?
- CT scan of the chest without contrast
- Type of treatment
- Surgery or procedure
- How many people
- 42 participants
- Where
- 2 sitesUnited States
- Study dates
- Nov 2007to 8 Feb 2017
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Subjects will be identified by their cardiologist who is also an investigator on this study at the time they are evaluated for an ICD implantation. Once it has been determined during the course of the patient's regular clinical care that he or she requires an ICD, they will be approached for enrollment into the study by the physician investigator and the clinical research coordinator.
Who may be able to join
- Subjects must be at least 18 years of age.
- Subjects must be referred for ICD implantation or already have an ICD implanted..
- Subjects must be willing to sign informed consent.
Who cannot join
- Subject is unable or unwilling to sign informed consent.
- Subject is pacemaker dependent.
- Subject is pregnant as indicated by standard clinical procedures prior to implant.
Trial locations and contacts
2 sites in 1 country.
United States2 sites
UPMC Presbyterian
Pittsburgh, Pennsylvania, 15213
UPMC Shadyside
Pittsburgh, Pennsylvania, 15232
About this study
The purpose of this study is to reconstruct a 12-lead electrocardiogram (ECG) from intracardiac (IC) electrograms (EGM) obtained from defibrillator devices (ICD). The purpose of such a reconstruction is to allow the use of IC EGM for diagnosis of clinical conditions for which ECG have historically been used, and to test the feasibility of a reconstruction technique for the standard 12-lead or extended electrocardiogram from electrical potentials obtained from inside a patient.
Read the detailed description
Reconstructing a 12-lead surface ECG from intracardiac EGM vectors of patients implanted with defibrillators can be of great value. It allows implantable devices that have thus far been used exclusively for arrhythmia detection and treatment, to be used for diagnostic purposes in similar ways as the ECG. The advantage of the reconstruction process is that it provides real-time continuous monitoring, which can be used for multiple purposes, including but not limited to:
- Ischemia detection
- Myocardial Infarction detection
- Electrolyte abnormalities detection
- Assessment of effect of medications
- Improved rhythm discrimination
- Conditions
- ICD
- Being tested
- CT scan of the chest without contrast
- Keywords
- ECG, ICD
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CT scan of the chest without contrastRadiation
Also called CT scan, ECG, ICD
Patients consenting to participate in the study may also undergo a baseline CT scan of the cest without contrast to allow for the geometrical characterization of their intracardiac electrodes from the ICD system in relation to the position of the 12-lead surface ECG electrodes which would be applied to the chest prior to the CT scan. This scan involves a small amount of radiation, a dose of approximately 1 rem. For comparison, radiation workers are permitted, by federal regulation, a maximum annual radiation exposure of 20 rems to the most sensitive organs of their body.
| Study group | Role | What they receive |
|---|---|---|
| Defibrillator | The subject population will be obtained by approaching the Principal and Co- Investigators' patients who have been referred for ICD implantation or who already have an ICD. This population ranges in age from 18 years on, and includes both males and females. A maximum of 50 subjects will be enrolled in this study. Receives: Radiation: CT scan of the chest without contrast |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Apr 2009 (estimated)
- Study startNov 2007
- Primary completion8 Feb 2017
- Study completion8 Feb 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for ICDStudies of the same condition, open and under way.
- More trials run by University of PittsburghThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 42 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Pittsburgh
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Samir Saba, University of Pittsburgh
- Investigators
- Samir F Saba, MD, Principal investigator, University of Pittsburgh
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00890461
- Sponsor's protocol ID
- PRO07080211
- Status last verified
- May 2017
- First submitted
- 28 Apr 2009
- Last updated
- 3 May 2017
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 3 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Reconstruction of 12-Lead Electrogram From Intracardiac Signals From Defibrillators During or After Implantation
- ClinicalTrials.gov ID
- NCT00890461
- Acronym / sponsor ID
- PRO07080211
- Conditions
- ICD
- Keywords
- ECG, ICD
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 42 participants (actual)
- Lead sponsor
- University of PittsburghUniversity, hospital or other
- Study start
- Nov 2007
- Primary completion
- 8 Feb 2017 (actual)
- Study completion
- 8 Feb 2017 (actual)
- First posted
- 29 Apr 2009 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to reconstruct a 12-lead electrocardiogram (ECG) from intracardiac (IC) electrograms (EGM) obtained from defibrillator devices (ICD). The purpose of such a reconstruction is to allow the use of IC EGM for diagnosis of clinical conditions for which ECG have historically been used, and to test the feasibility of a reconstruction technique for the standard 12-lead or extended electrocardiogram from electrical potentials obtained from inside a patient.
Detailed description
Reconstructing a 12-lead surface ECG from intracardiac EGM vectors of patients implanted with defibrillators can be of great value. It allows implantable devices that have thus far been used exclusively for arrhythmia detection and treatment, to be used for diagnostic purposes in similar ways as the ECG. The advantage of the reconstruction process is that it provides real-time continuous monitoring, which can be used for multiple purposes, including but not limited to:
- Ischemia detection
- Myocardial Infarction detection
- Electrolyte abnormalities detection
- Assessment of effect of medications
- Improved rhythm discrimination
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Defibrillator | – | Radiation: CT scan of the chest without contrastThe subject population will be obtained by approaching the Principal and Co- Investigators' patients who have been referred for ICD implantation or who already have an ICD. This population ranges in age from 18 years on, and includes both males and females. A maximum of 50 subjects will be enrolled in this study. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Subjects will be identified by their cardiologist who is also an investigator on this study at the time they are evaluated for an ICD implantation. Once it has been determined during the course of the patient's regular clinical care that he or she requires an ICD, they will be approached for enrollment into the study by the physician investigator and the clinical research coordinator.
Key inclusion criteria (3 listed)
- Subjects must be at least 18 years of age.
- Subjects must be referred for ICD implantation or already have an ICD implanted..
- Subjects must be willing to sign informed consent.
Key exclusion criteria (3 listed)
- Subject is unable or unwilling to sign informed consent.
- Subject is pacemaker dependent.
- Subject is pregnant as indicated by standard clinical procedures prior to implant.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| CT scan of the chest without contrastAlso: CT scan, ECG, ICDPatients consenting to participate in the study may also undergo a baseline CT scan of the cest without contrast to allow for the geometrical characterization of their intracardiac electrodes from the ICD system in relation to the position of the 12-lead surface ECG electrodes which would be applied to the chest prior to the CT scan. This scan involves a small amount of radiation, a dose of approximately 1 rem. For comparison, radiation workers are permitted, by federal regulation, a maximum annual radiation exposure of 20 rems to the most sensitive organs of their body. | Radiation | Defibrillator |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 May 2017.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Samir F Saba, MD principal investigator
University of Pittsburgh
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of ICD, run by University of Pittsburgh at 2 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 May 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 May 2017.