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Cardiopulmonary BypassNCT00446927

SPY Imaging System: Its Role in Pediatric Cardiac Surgery

An observational study of Cardiopulmonary Bypass and Congenital Heart Defects, run by Emory University at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The current method of evaluating the surgical repair during surgery is limited to echocardiography (a noninvasive diagnostic procedure that uses ultrasound to study the structure and motions of the heart) or an invasive procedure called cardiac catheterization. Read more about this study

Who is it for?
Ages Up to 18 years
How many people
40 participants
Where
1 siteUnited States
Study dates
Apr 2007to Jan 2012
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 Up to 18 years
  • All sexes
  • No healthy volunteers
  • Child, Adult

Study population: The study patients will be consented in the pre-operative clinic, Cardiac Intesive Care unit or from the Cardiac Step-down Unit.

Who may be able to join

  • Patients undergoing congenital heart operations at Children's Healthcare of Atlanta.
  • Less than or equal to 18 years of age.
  • Arterial switch procedure
  • Anomalous coronary artery from the pulmonary artery repair
  • Aortic root replacement
  • Coarctation of the aorta repair
Show all 11Show fewer
  • Blalock-Taussig shunt
  • Right ventricle-to-pulmonary artery shunt
  • Cavopulmonary shunt
  • Branch or distal pulmonary artery reconstruction
  • Unifocalization of aortopulmonary collaterals

Who cannot join

  • Known sensitivity to ICG, iodides or shellfish
  • Inability to obtain informed consent
  • > 18 years of age

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Children's Healthcare of Atlanta

    Atlanta, Georgia, 30322

Other trials in United States

About this study

The current method of evaluating the surgical repair during surgery is limited to echocardiography (a noninvasive diagnostic procedure that uses ultrasound to study the structure and motions of the heart) or an invasive procedure called cardiac catheterization.

The SPY imaging system makes use of the fluorescence properties of indocyanine green (ICG) to obtain high quality images in blood vessels. ICG is a green dye used to test heart output. The use of the SPY imaging system during surgery may provide valuable information regarding successful vessel connection and the area remaining unblocked.

Read more

This study will compare the results of images to echocardiography and conventional angiography results.

With SPY imaging, congenital heart surgeons would be able to check the quality of the procedure and revise, redo or perform additional procedures as dictated by the images before the patient leaves the operating room.

Read the detailed description

It would be advantageous to detect potential problems with vessel and anastomotic patency prior to leaving the operating room. The SPY imaging system makes use of the fluorescence properties of Indocyanine Green (ICG) to obtain high quality images of blood vessels. Unlike conventional angiography, indocyanine green fluorescence imaging offers the potential for a reliable, non invasive, inexpensive and rapid method of intraoperative assessment of vessel and anastomotic patency.

This type of imaging resource could be invaluable in a repair such as:

  1. coronary artery re-implantation following arterial switch procedure for transposition of the great arteries, anomalous coronary artery from the pulmonary artery repair, or aortic root replacement,
  2. coarctation of the aorta,
  3. Blalock-Taussig shunt, right-ventricle-to-pulmonary artery shunt, or cavopulmonary connection for single ventricle palliation, and
  4. branch or distal pulmonary artery reconstruction/unifocalization in tetralogy of Fallot and pulmonary atresia/ventricular septal defect.

The SPY imaging system is feasible for a variety of congenital heart defects and can provide valuable information regarding vessel and anastomotic patency.

Specific Aim 1: Evaluate quality of images for clarity and ability to visualize desired anatomic area

Specific Aim 2: Compare results of images to echocardiography and conventional angiography results

  • Part 1. Compare the results of pre-repair intra-operative SPY images to preoperative echocardiography results, and cardiac catheterization results when available
  • Part 2. Compare the results of post-repair intraoperative SPY images to postoperative echocardiography results, and cardiac catheterization results when available

Approximately 40 patients in total will be enrolled in the study - 10 who have undergone coronary reimplantation, 10 who have undergone repair of coarctation of the aorta, 10 who have undergone a palliative shunting procedure, and 10 who have undergone pulmonary artery reconstruction.

Echocardiography:

Preoperative, intraoperative, and postoperative cardiac catheterization reports will be analyzed.

Cardiac catheterization:

Preoperative and postoperative cardiac catheterization reports will be analyzed.

SPY imaging:

ICG green will be administered in the following doses: 1.25 mg in infants (< 1 year), 2.5 mg in children (<16 years), and 5 mg in adult size patients (17-18 years of age). Doses will be injected in 1 ml volumes directly into the aorta, right ventricle or pulmonary artery, depending upon the procedure. Repeat dosing and imaging may be performed if needed. The total dose of dye will be limited to 2 mg/kg. Images will be obtained in the operating room prior to commencing and after weaning from cardiopulmonary bypass.

Keywords
Pediatrics, Cardiology, Cardiopulmonary Bypass, Heart Surgery, Cardiac Catheterization, Echocardiography, Imaging, ICG green dye
Medical subject headings
Heart Defects, Congenital

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Mar 2007 (estimated)
  2. Study startApr 2007
  3. Primary completionJan 2012
  4. Study completionJan 2012

Resources

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
Case only
Time perspective
Prospective
Enrolment
40 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00446927
Sponsor's protocol ID
IRB00001298
Status last verified
May 2012
First submitted
8 Mar 2007
Last updated
24 May 2012
Results posted
No
Data monitoring committee
No

Publications

  • Bonhoeffer P, Bonnet D, Piechaud JF, Stumper O, Aggoun Y, Villain E, Kachaner J, Sidi D. Coronary artery obstruction after the arterial switch operation for transposition of the great arteries in newborns. J Am Coll Cardiol. 1997 Jan;29(1):202-6. doi: 10.1016/s0735-1097(96)00433-0.

    PubMed 8996315
  • Tanel RE, Wernovsky G, Landzberg MJ, Perry SB, Burke RP. Coronary artery abnormalities detected at cardiac catheterization following the arterial switch operation for transposition of the great arteries. Am J Cardiol. 1995 Jul 15;76(3):153-7. doi: 10.1016/s0002-9149(99)80048-4.

    PubMed 7611150
  • Bonnet D, Bonhoeffer P, Piechaud JF, Aggoun Y, Sidi D, Planche C, Kachaner J. Long-term fate of the coronary arteries after the arterial switch operation in newborns with transposition of the great arteries. Heart. 1996 Sep;76(3):274-9. doi: 10.1136/hrt.76.3.274.

    PubMed 8868989
  • Ibarra-Perez C, Castaneda AR, Varco RL, Lillehei CW. Recoarctation of the aorta. Nineteen year clinical experience. Am J Cardiol. 1969 Jun;23(6):778-84. doi: 10.1016/0002-9149(69)90371-3. No abstract available.

    PubMed 5785157
  • Parsons CG, Astley R. Recurrence of aortic coarctation after operation in childhood. Br Med J. 1966 Mar 5;1(5487):573-7. doi: 10.1136/bmj.1.5487.573. No abstract available.

    PubMed 5908418

Questions about this trial

What is this clinical trial studying?

An observational study of Cardiopulmonary Bypass and Congenital Heart Defects, run by Emory University 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 11 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 24 May 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.

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?

On the ClinicalTrials.gov record for NCT00446927, which also lists 5 linked publications.

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 24 May 2012.

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