Assessment of Surface Coverage of Two Types of Drug-eluting Stent in Diabetes Mellitus and Non-Diabetes Mellitus

NCT ID: NCT01023919

Last Updated: 2024-12-02

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

NA

Total Enrollment

120 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-11-30

Study Completion Date

2010-12-31

Brief Summary

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Diabetic patients are prone to a diffuse and rapidly progressive form of atherosclerosis. Both clinical and angiographic outcomes following percutaneous coronary intervention (PCI) are poor in patients with DM compared with those without DM. Autopsy study has shown delayed neointimal healing with inadequate endothelialization and persistent stent surface fibrin deposition after DES implantation in DM patients. This might partially contribute to the high risk of late stent thrombosis.

YINYI Polymer-Free paclitaxel stent is a domestic new type stent with bare metal base with micro porous surface. However, limited data is available in vivo about the surface coverage after stent implantation in DM patients because of lack of sensitive imaging modalities. Optical coherence tomography (OCT) is an optical analogue of intravascular ultrasound(IVUS)that allows high-resolution tomographic intravascular imaging. Furthermore, several studies have demonstrated the feasibility of OCT to quantitatively evaluate the surface coverage and stent conditions in the follow up after PCI .

Therefore, the aim of this study was to analyze the surface coverage and late malapposition after two types of DES implantation in DM patients compared with non-DM patients by using OCT and IVUS

Detailed Description

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Diabetic patients are prone to a diffuse and rapidly progressive form of atherosclerosis. Both clinical and angiographic outcomes following percutaneous coronary intervention (PCI) are poor in patients with DM compared with those without DM. Autopsy study has shown delayed neointimal healing with inadequate endothelialization and persistent stent surface fibrin deposition after DES implantation in DM patients. This might partially contribute to the high risk of late stent thrombosis.

YINYI Polymer-Free paclitaxel stent is a domestic new type stent with bare metal base with micro porous surface. However, limited data is available in vivo about the surface coverage after stent implantation in DM patients because of lack of sensitive imaging modalities. Optical coherence tomography (OCT) is an optical analogue of intravascular ultrasound(IVUS)that allows high-resolution tomographic intravascular imaging.

Therefore, the aim of this study was to analyze the surface coverage and late malapposition after two types of DES implantation in DM patients compared with non-DM patients by using OCT and IVUS

Conditions

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Coronary Artery Disease Diabetes Mellitus

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Group B:

Coronary artery disease without diabetes mellitus

Group Type ACTIVE_COMPARATOR

Device: Polymer-based sirolimus-eluting stent(Cypher stent ) and Polymer-free paclitaxel-eluting stent (YinYi stent)

Intervention Type DEVICE

Cypher stent or YinYi stent randomly implanted in coronary artery disease

Group A:

Coronary artery disease with diabetes mellitus

Group Type ACTIVE_COMPARATOR

Device: Polymer-based sirolimus-eluting stent(Cypher stent ) and Polymer-free paclitaxel-eluting stent (YinYi stent)

Intervention Type DEVICE

Cypher stent or YinYi stent randomly implanted in coronary artery disease

Interventions

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Device: Polymer-based sirolimus-eluting stent(Cypher stent ) and Polymer-free paclitaxel-eluting stent (YinYi stent)

Cypher stent or YinYi stent randomly implanted in coronary artery disease

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

1. Age : 18-75Y
2. Patients diagnosed as type 2 DM or non-DM.


1. Patients were considered eligible if they have one significant (\>70%) angiographic stenosis lesions in native coronary vessel by CAG.
2. Each target is de novo lesion that can be treated with 1-2 stents.
3. Reference vessel diameter of 2.5 to 4.0 mm.

Exclusion Criteria

1. ST-segment elevation myocardial infarction within 7 days prior to the index procedure.
2. Life expectancy \<12 months due to another medical condition.
3. Contraindication to antiplatelet therapy or a history of hypersensitivity to sirolimus and paclitaxel or structurally related compounds.
4. Creatinine level more than 2.0mg/dL or ESRD.
5. Severe hepatic dysfunction (more than 3 times normal reference values).
6. Planned surgery procedure≤12 months post-index procedure.
7. Known allergy to stainless steel.
8. Female of childbearing potential with a positive pregnancy test within 7 days before the index procedure, or lactating, or intends to become pregnant during the 12 months post index procedure.
9. Patient is not clinically appropriate for OCT evaluation in the opinion of investigator.


1. Study lesion is ostial in location (within 3.0 mm of vessel origin).
2. Study lesion involving arterial segments with highly tortuous anatomy.
3. Complex lesion morphologies (bifurcation needs two stents technique, left main lesion, chronic obstructive occlusion, severe thrombus, heavy calcification).
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Harbin Medical University

OTHER

Sponsor Role lead

Responsible Party

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Yu Bo

Prof

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Bo Yu, MD,PhD

Role: PRINCIPAL_INVESTIGATOR

The Second Affiliated Hospital of Harbin Medical University

Locations

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The second Affiliated Hospital of Harbin Medical University

Harbin, Heilong Jiang, China

Site Status

Countries

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China

Other Identifiers

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HMUOCT-DM vs NDM-2

Identifier Type: -

Identifier Source: org_study_id