Coronary Artery DiseasePhase 1NCT00474565
Coronary Artery and Coronary Artery Bypass Graft Imaging Using a Specialized Catheter and Computed Tomography
A Phase 1 study testing Placement of an aortic root pigtail catheter. in people with Coronary Artery Disease, run by Corewell Health East at 1 site in United States.
Trial summary
The present study relates to a new approach to coronary artery and coronary artery by-pass graft imaging, and more particularly to computed tomographic angiography following an aortic root injection of a low amount of contrast (up to 30 cc) via a percutaneously placed catheter (Vanguard DX, Medrad Inc.) positioned in… Read more about this study
- Who is it for?
- Ages 20 years and older
- Conditions the study is for
- Coronary Artery Disease
- What is being tested?
- Placement of an aortic root pigtail catheter.
- Type of treatment
- Surgery or procedure
- How many people
- 0 participants
- Where
- 1 siteUnited States
- Study dates
- Feb 2007to Dec 2008
- Phase
- Phase 1
- 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 20 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Male and female patients that have an abnormal nuclear medicine heart scan and are already scheduled for cardiac catheterization for evaluation of coronary artery disease or disease of coronary artery bypass grafts will be asked to participate in this trial.
- Provided informed consent.
- Evaluation by a Cardiology Division staff or Cardiology nurse clinician.
Who cannot join
- Patient is currently enrolled in another related research study.
- Less than 18 years of age.
- Pregnant patients.
- Abnormal renal function with creatinine equal to or greater than 1.6 mg/dl or those subjects requiring dialysis.
- Patients with chronic obstructive pulmonary disease or heart-failure with cardiac ejection-fraction less than 30%.
- Patients with known sensitivity to beta-blockers (Lopressor) or have asthma.
- Patients receiving an abnormally large volume of contrast media during cardiac catheterization (> 200cc)
Trial locations and contacts
1 site in 1 country.
United States1 site
William Beaumont Hospital, 3601 West 13 Mile Road
Royal Oak, Michigan, 48073
About this study
Official title: Contrast-Enhanced Coronary Artery and Coronary Artery Bypass Graft Imaging Using Aortic Root Catheter Injection With Computed Tomographic Angiography (CTA)
The present study relates to a new approach to coronary artery and coronary artery by-pass graft imaging, and more particularly to computed tomographic angiography following an aortic root injection of a low amount of contrast (up to 30 cc) via a percutaneously placed catheter (Vanguard DX, Medrad Inc.) positioned in the aortic root.
The objective of the study is to show the feasibility of Coronary artery CTA using aortic root injection of contrast compared to the standard invasive cardiac catheterization.
Read the detailed description
Coronary artery disease remains the leading cause of death worldwide. The diagnosis via the gold standard, cardiac catheterization, remains a time consuming, expensive, and invasive procedure with some considerable risks. In addition, there is a significant risk due to cumulative amount of iodinated contrast delivered (between 80 - 120 cc) in patients who have abnormal renal insufficiency or at a high risk for developing contrast nephropathy. Cardiac catheterization specifically involves arterial puncture with a needle, usually in the groin or upper extremity, through which a guidewire is passed fluoroscopically to the ascending aorta. A catheter is then inserted over the guidewire and subsequently, the guidewire is removed and iodinated contrast is injected to opacify the aorta or coronary arteries. As such, there are different kinds of catheters that are used to engage either the right or left native coronary arteries or by-pass vein grafts. This procedure requires separate injections into the coronary arteries or by-pass grafts which can induce arrhythmias, require over one hour of procedural time, requires larger bore catheters, exposes the physician and patient to ionizing radiation and subjects the patient with coronary artery disease to contrast induced nephropathy, especially in cases requiring higher loads of iodinated contrast.
Of the noninvasive techniques, the most common limiting factor when employing IV-enhanced CTA is the underlying blood pool, which also enhances when contrast-enhanced protocols are employed using a peripheral intravenous contrast injection route. This results in a frequent obscuration of the native coronary arteries. Reproducible enhancement of the distal and tributary anatomy is another pitfall with IV-enhanced coronary CTA. In addition, the amount of contrast agent required is similar to that amount required during invasive coronary angiography. As such, the method of the present study provides an imaging concept of the coronary arteries employing a catheter device in conjunction with computed tomography (CT) imaging machine that will enable a reduction of the total amount of dye delivered to the patient.
- Conditions
- Coronary Artery Disease
- Being tested
- Placement of an aortic root pigtail catheter.
- Keywords
- Catheter,, Aortic root injection,, low dose contrast injection,, coronary artery angiogarm and, coronary artery bypass graft imaging.
- Medical subject headings
- Coronary Artery Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Placement of an aortic root pigtail catheter.Procedure or surgery
Seldinger technique for placement of catheter.
What is being measured
The primary outcome is the main question the study is designed to answer.
Coronary artery diameters and degree of stenosis are assessed and compared between conventional cath angio and new CTA study.
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 May 2007 (estimated)
- Study startFeb 2007
- Primary completionDec 2008
- Study completionDec 2008 (estimated)
Why it stopped: Suspended failure to follow Conflict of Interest Management Plan
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Coronary Artery DiseaseStudies of the same condition, open and under way.
- 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
- Interventional
- Phase
- Phase 1
- Primary purpose
- Diagnosis
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- Double blind
- Who is masked
- Investigator, Outcomes assessor
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Corewell Health East
- Sponsor type
- University, hospital or other
- Investigators
- Amr Abbas, M.D., Study director, Corewell Health EastKostaki G. Bis, M.D., Study chair, Corewell Health EastNishit Choksi, MD, Principal investigator, Corewell Health East
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00474565
- Sponsor's protocol ID
- 2005-156
- Status last verified
- Sep 2012
- First submitted
- 16 May 2007
- Last updated
- 21 Sep 2012
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Kumar A, Bis KG, Shetty A, Vyas A, Anderson A, Balasubramaniam M, O'Neill W, Stein W. Aortic root catheter-directed coronary CT angiography in swine: coronary enhancement with minimum volume of iodinated contrast material. AJR Am J Roentgenol. 2007 May;188(5):W415-22. doi: 10.2214/AJR.06.0945.
PubMed 17449736
Study at a glance
From the registry record, last updated by the sponsor on 21 Sep 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Contrast-Enhanced Coronary Artery and Coronary Artery Bypass Graft Imaging Using Aortic Root Catheter Injection With Computed Tomographic Angiography (CTA)
- ClinicalTrials.gov ID
- NCT00474565
- Acronym / sponsor ID
- 2005-156
- Conditions
- Coronary Artery Disease
- Keywords
- Catheter,, Aortic root injection,, low dose contrast injection,, coronary artery angiogarm and, coronary artery bypass graft imaging.
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- WithdrawnReason stopped: Suspended failure to follow Conflict of Interest Management Plan
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Corewell Health EastUniversity, hospital or other
- Study start
- Feb 2007
- Primary completion
- Dec 2008 (actual)
- Study completion
- Dec 2008 (estimated)
- First posted
- 17 May 2007 (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 present study relates to a new approach to coronary artery and coronary artery by-pass graft imaging, and more particularly to computed tomographic angiography following an aortic root injection of a low amount of contrast (up to 30 cc) via a percutaneously placed catheter (Vanguard DX, Medrad Inc.) positioned in the aortic root.
The objective of the study is to show the feasibility of Coronary artery CTA using aortic root injection of contrast compared to the standard invasive cardiac catheterization.
Detailed description
Coronary artery disease remains the leading cause of death worldwide. The diagnosis via the gold standard, cardiac catheterization, remains a time consuming, expensive, and invasive procedure with some considerable risks. In addition, there is a significant risk due to cumulative amount of iodinated contrast delivered (between 80 - 120 cc) in patients who have abnormal renal insufficiency or at a high risk for developing contrast nephropathy. Cardiac catheterization specifically involves arterial puncture with a needle, usually in the groin or upper extremity, through which a guidewire is passed fluoroscopically to the ascending aorta. A catheter is then inserted over the guidewire and subsequently, the guidewire is removed and iodinated contrast is injected to opacify the aorta or coronary arteries. As such, there are different kinds of catheters that are used to engage either the right or left native coronary arteries or by-pass vein grafts. This procedure requires separate injections into the coronary arteries or by-pass grafts which can induce arrhythmias, require over one hour of procedural time, requires larger bore catheters, exposes the physician and patient to ionizing radiation and subjects the patient with coronary artery disease to contrast induced nephropathy, especially in cases requiring higher loads of iodinated contrast.
Of the noninvasive techniques, the most common limiting factor when employing IV-enhanced CTA is the underlying blood pool, which also enhances when contrast-enhanced protocols are employed using a peripheral intravenous contrast injection route. This results in a frequent obscuration of the native coronary arteries. Reproducible enhancement of the distal and tributary anatomy is another pitfall with IV-enhanced coronary CTA. In addition, the amount of contrast agent required is similar to that amount required during invasive coronary angiography. As such, the method of the present study provides an imaging concept of the coronary arteries employing a catheter device in conjunction with computed tomography (CT) imaging machine that will enable a reduction of the total amount of dye delivered to the patient.
Study design
- Primary purpose
- Diagnosis
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- Double blind (investigator, outcomes assessor)
Who may qualify
- Ages
- 20 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Male and female patients that have an abnormal nuclear medicine heart scan and are already scheduled for cardiac catheterization for evaluation of coronary artery disease or disease of coronary artery bypass grafts will be asked to participate in this trial.
- Provided informed consent.
- Evaluation by a Cardiology Division staff or Cardiology nurse clinician.
Key exclusion criteria (7 listed)
- Patient is currently enrolled in another related research study.
- Less than 18 years of age.
- Pregnant patients.
- Abnormal renal function with creatinine equal to or greater than 1.6 mg/dl or those subjects requiring dialysis.
- Patients with chronic obstructive pulmonary disease or heart-failure with cardiac ejection-fraction less than 30%.
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 |
|---|---|---|
| Placement of an aortic root pigtail catheter.Seldinger technique for placement of catheter. | Procedure or surgery | – |
Primary outcome
Coronary artery diameters and degree of stenosis are assessed and compared between conventional cath angio and new CTA study.
Time frame: 1 year
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Sep 2012.
- Background: PubMed 17449736Kumar A, Bis KG, Shetty A, Vyas A, Anderson A, Balasubramaniam M, O'Neill W, Stein W. Aortic root catheter-directed coronary CT angiography in swine: coronary enhancement with minimum volume of iodinated contrast material. AJR Am J Roentgenol. 2007 May;188(5):W415-22. doi: 10.2214/AJR.06.0945.
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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.
Amr Abbas, M.D. study director
Corewell Health East
Kostaki G. Bis, M.D. study chair
Corewell Health East
Nishit Choksi, MD principal investigator
Corewell Health East
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Placement of an aortic root pigtail catheter. in people with Coronary Artery Disease, run by Corewell Health East at 1 site 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 7 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: withdrawn, as of the sponsor's last update on 21 Sep 2012. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site 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.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
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.
What does the primary outcome measure?
Coronary artery diameters and degree of stenosis are assessed and compared between conventional cath angio and new CTA study. (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00474565, which also lists 1 linked publication.
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 21 Sep 2012; AzTrials last refreshed its copy on 7 Nov 2026.