Does Co-registration of OCT and Angiography Reduce Geographic Miss of Stent Implantation?
|The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.|
|ClinicalTrials.gov Identifier: NCT02671123|
Recruitment Status : Unknown
Verified February 2016 by Richard A. Shlofmitz, MD, St. Francis Hospital, New York.
Recruitment status was: Recruiting
First Posted : February 2, 2016
Last Update Posted : February 5, 2016
|Condition or disease||Intervention/treatment||Phase|
|Coronary Artery Disease||Procedure: Coronary PCI with OCT with Co Registration Procedure: Coronary PCI with OCT without Co Registration||Not Applicable|
Background: When a stent fails to fully cover the lesion, it is termed "geographic miss" (GM). Optical coherence tomography (OCT) is an intracoronary imaging modality that has higher resolution than conventional intracoronary ultrasound. Although OCT allows identification of the location of the culprit lesion and side branch using automated measures, it is sometimes difficult to identify the exact segment corresponding to angiography. Recently, co-registration of OCT and angiography has become available; however, whether this reduces the incidence of GM during stenting is unknown.
Hypothesis: OCT reduces GM during percutaneous coronary intervention.
- Determine the incidence of GM defined as residual disease* and significant edge dissection† at proximal and distal reference
- Determine the incidence of stent dislocation (distance between planned and actual stented place)
Determine procedural findings (additional stent, total fluoro time, total contrast volume)
Minimum lumen area <4.0 mm2 in the presence of significant residual plaque within 5 mm distal and proximal to the stent edge.
- A flap of vessel wall of >60° is seen in ≥2 consecutive cross-section image within 5 mm distal and proximal from stent edge Study Design and Methods: Single-center, prospective, randomized study. Consented subjects who are to undergo percutaneous coronary intervention are divided into 2 groups randomly (OCT with co-registration vs OCT without co-registration). After stent deployment guided by OCT, dissection, residual disease at the stent edge, and distance between planned and actual stent location are assessed using OCT or angiography. Additional stent deployment, procedure time, total fluoroscopy time, and total contrast volume are also evaluated.
Sample size considerations: OCT with co-registration: 100, OCT without co-registration: 100 (α＝0.05, β ＝0.2). In a retrospective evaluation, the incidence of residual disease (lumen area <4.0 mm2 in the presence of significant residual plaque) or significant stent edge dissection was 36% (18/50, 34% [17/50] with residual stenosis, 4% [2/50] with significant edge dissection). Under the assumption that GM occurs in 36% of patients without co-registration and 18% of patients with co-registration, a group of 190 patients yields a power 80% (with a 2-sided α=0.05) to detect a difference in GM between patients with and without co-registration. In order to account for patient drop out and non-evaluable OCT recordings (5%), a total of 200 patients will be enrolled.
|Study Type :||Interventional (Clinical Trial)|
|Estimated Enrollment :||200 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||None (Open Label)|
|Official Title:||Evaluation of Effect of Co-registration Between Optical Coherence Tomography (OCT) and Coronary Angiography Onto OCT Guided Percutaneous Coronary Intervention (PCI)|
|Study Start Date :||February 2016|
|Estimated Primary Completion Date :||December 2016|
|Estimated Study Completion Date :||December 2016|
Active Comparator: Coronary PCI with OCT with Co-Registration
Coronary stenting will be performed with OCT guidance as per local practice. Pre and post stenting procedure will be performed with OCT guidance with the use of the Co-Registration software tool after stent implanted.
Procedure: Coronary PCI with OCT with Co Registration
Co-Registration is an online tool used to take measurements during a stent procedure ( PCI-percutaneous coronary intervention) as part of the OCT ( Optical Coherence Tomography intravascular system. Co Registration software may provide additional imaging details during stent implantation when using OCT.
Placebo Comparator: Coronary PCI with OCT without Co-Registration
Coronary stenting will be performed with OCT guidance as per local practice. Pre and post stenting procedure will be performed with OCT guidance without the use of the Co-Registration software tool after stent implanted.
Procedure: Coronary PCI with OCT without Co Registration
Coronary PCI will be performed using OCT ( Optical Coherence Tomography intravascular system) guidance without the Co Registration software tool enabled.
- Geographic miss [ Time Frame: Intraoperative ]Geographic miss defined as evidence of residual disease at stent edge or significant edge dissection after stent deployment
- Number of participants with Residual disease at stented edge [ Time Frame: Intraoperative ]Residual disease at stent edge will defined as minimum lumen area within 5mm from the stent edge evaluated by OCT. This measurement will be analyzed by a core lab independently who will be blinded for randomization.
- Number of participants with stent edge dissection [ Time Frame: peri procedure ]Stent edge dissection will be defied as a flap of vessel wall and further categorized as intimal dissection, medial dissection, intramural hematoma, or extra-medial dissection. Minimum lumen area, angle of dissection flap, and length of dissection will be measured by OCT by a core lab who is blinded to the randomization.
- Distance between the planned and actual stent location [ Time Frame: Intraoperative ]Distance between the planned and actual stent location will be defined as the distance between the center of planned stent location and the center of actual stent location which will be recorded on the OCT software and analyzed by a core lab who is blinded to the randomization.
- Number of additional stents required [ Time Frame: Intraoperative ]This will be measured as number of participants with additional stent required.
- Procedure time [ Time Frame: Intraoperative ]time of PCI procedure defined as time vascular access obtained until guide catheter removed from access site.
- Total fluoroscopy time [ Time Frame: intraoperative ]total amount of fluoroscopy time used during procedure
- Total contrast volume [ Time Frame: intraoperative ]total mount of contrast in ml used during entire PCI procedure
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02671123
|Contact: Richard A Shlofmitz, MDemail@example.com|
|Contact: Elizabeth S Haag, RN MPA||516 firstname.lastname@example.org|
|United States, New York|
|St. Francis Hospital||Recruiting|
|Roslyn, New York, United States, 11576|
|Contact: Elizabeth S Haag, RN, MPA,CCRP 516-562-6790 email@example.com|
|Contact: Lyn Santiago, RN,CCRC 516 562-6790 firstname.lastname@example.org|
|Principal Investigator: Richard A Shlofmitz, MD|
|Principal Investigator:||Richard A Shlofmitz, MD||Chairman of Cardiology St Francis Hospital|