Role of Tirofiban and the Paclitaxel Eluting Stent in Postfibrinolysis Angioplasty

NCT ID: NCT00306228

Last Updated: 2009-09-28

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

COMPLETED

Clinical Phase

PHASE4

Total Enrollment

436 participants

Study Classification

INTERVENTIONAL

Study Start Date

2004-10-31

Study Completion Date

2009-01-31

Brief Summary

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The conceptual hypothesis of this study is that, in patients with acute myocardial infarction and ST-segment elevation, the strategy of performing coronary angioplasty of the culprit artery with paclitaxel eluting stent significantly reduces the rate of restenosis in comparison with bare stents.

The conceptual hypothesis of this study is that, in patients with acute myocardial infarction and ST-segment elevation, the strategy of performing coronary stent-angioplasty of the culprit artery under the protection of tirofiban 120 minutes after fibrinolytic significantly improves epicardial and myocardial infusion in comparison with the strategy of performing immediate intravenous thrombolysis (tenecteplase plus enoxaparine) followed by coronary angiography and adequate revascularization.

Detailed Description

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The primary objectives of this study are: first to determine the efficacy of paclitaxel eluting stent compared to conventional bare stent in terms of restenosis, and second to determine the effect of tirofiban administered prior to percutaneous coronary intervention (PCI) but 120 minutes after thrombolytic on the epicardial and myocardial flow after mechanical revascularization in patients with STEMI.

Methods: This is a phased 4, 2x2 randomised, open, multicenter, clinical study. Patients will be randomised 1:1:1:1 to four groups: a) paclitaxel eluting stent with tirofiban, b) paclitaxel eluting stent without tirofiban, c) bare stent with tirofiban and d) bare stent without tirofiban. A total of approximately 436 patients, with \<12 hours STEMI will be enrolled. All patients will be initially treated with tenecteplase (TNK) and enoxaparin. Tirofiban will start 120 minutes after tenecteplase administration in those patients randomised to tirofiban. Cardiac catheterization will be performed within the first 3-12 hours after the study inclusion and stenting on the culprit artery, with the randomised paclitaxel or bare stent, will be performed.

The efficacy of these strategies will be measured in terms of: 1) binary restenosis, defined as \>50% diameter stenosis and segment analysis including the stented segment as well as their margins, 5 mm proximal and distal to the stent at 9-12 months follow-up and, 2) the assessment of the epicardial and myocardial perfusion (%TIMI 3, CTFC, CFR-CTFC, TMP y DSA-TMP and the analysis of the normalization of the ST segment at 90 minutes, 3, 6, 12 and 24 hours after thrombolysis).

Conditions

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Myocardial Infarction

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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bare-metal stent without tirofiban

implantation of a bare-metal stent with no tirofiban infusion after fibrinolysis

Group Type ACTIVE_COMPARATOR

Postfibrinolysis percutaneous coronary intervention

Intervention Type PROCEDURE

implantation of a bare-metal stent with no infusion of tirofiban 120 minutes after fibrinolysis

bare-metal stent with tirofiban

implantation of a bare-metal stent with tirofiban infusion after fibrinolysis

Group Type ACTIVE_COMPARATOR

Postfibrinolysis percutaneous coronary intervention

Intervention Type PROCEDURE

implantation of a bare-metal stent with infusion of tirofiban 120 minutes after fibrinolysis

paclitaxel-eluting stent without tirofiban

implantation of a paclitaxel eluting-stent with no tirofiban after fibrinolysis

Group Type ACTIVE_COMPARATOR

Postfibrinolysis percutaneous coronary intervention

Intervention Type PROCEDURE

implantation of a paclitaxel eluting-stent with no infusion of tirofiban 120 minutes after fibrinolysis

paclitaxel-eluting stent with tirofiban

implantation of a paclitaxel eluting-stent with tirofiban infusion after fibrinolysis

Group Type ACTIVE_COMPARATOR

Postfibrinolysis percutaneous coronary intervention

Intervention Type PROCEDURE

implantation of a paclitaxel eluting-stent with infusion of tirofiban 120 minutes after fibrinolysis

Interventions

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Postfibrinolysis percutaneous coronary intervention

implantation of a bare-metal stent with no infusion of tirofiban 120 minutes after fibrinolysis

Intervention Type PROCEDURE

Postfibrinolysis percutaneous coronary intervention

implantation of a bare-metal stent with infusion of tirofiban 120 minutes after fibrinolysis

Intervention Type PROCEDURE

Postfibrinolysis percutaneous coronary intervention

implantation of a paclitaxel eluting-stent with no infusion of tirofiban 120 minutes after fibrinolysis

Intervention Type PROCEDURE

Postfibrinolysis percutaneous coronary intervention

implantation of a paclitaxel eluting-stent with infusion of tirofiban 120 minutes after fibrinolysis

Intervention Type PROCEDURE

Other Intervention Names

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Express stents (Boston Scientific, Natick, Massachusetts) Express stents (Boston Scientific, Natick, Massachusetts) TAXUS stents (Boston Scientific) TAXUS stents (Boston Scientific)

Eligibility Criteria

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Inclusion Criteria

Patients with ST-segment elevation acute myocardial infarction with all of the following criteria will be eligible for enrollment:

1. Age \>18 years.
2. Chest discomfort \>30 minutes with no response to nitroglycerin.
3. Time from the onset of symptoms to randomization \< 12 hours.
4. ST segment elevation \> 1 mm in two or more limb leads or 2 mm in two or more contiguous precordial leads or non-diagnostic ECG (left bundle branch block or pacemaker rhythm) with classic symptoms.
5. Killip class \> 3.
6. Written informed consent will be obtained.

Exclusion Criteria

Patients presenting with any of the following will not be included in the study.

1. Cardiogenic shock defined as a systolic blood pressure \<90 mm Hg without response to fluid administration or \<100 mmHg in patients with supportive treatment and no bradycardia.
2. Suspected mechanical complications of acute myocardial infarction.
3. Previous CABG.
4. Non-cardiac disease that is likely to jeopardize the planned termination of the study.
5. Woman of childbearing potential unless a negative pregnant test.
6. Active bleeding and recent (within 2 weeks) surgery that contraindicate the use of heparin, tirofiban, or platelet aggregation inhibitors.
7. Contraindications for thrombolytic use.

* previous hemorrhagic stroke at any time
* history of prior non-hemorrhagic cerebrovascular accident within 12 months
* intracerebral neoplasia
* active internal bleeding
* suspected aortic dissection
* Uncontrolled hypertension \>180/110 in several measurements
* any other known intracerebral pathology not covered in contraindications
* Current use of anticoagulants or heparin use within 8 hours
* known bleeding diathesis
* recent trauma (\< 4 weeks), including head trauma or traumatic or prolonged (\>10 minutes) CPR or recent major surgery or biopsy (\<8 weeks)
* noncompressible vascular punctures
* recent (\< 4 weeks) internal bleeding
* pregnancy
* active peptic ulcer
8. History of hypersensitivity to aspirin, ticlopidine, clopidogrel, heparin, tirofiban and stainless steel.
9. Known renal failure, creatinine \>2,5 mg/dL.
10. Known impaired hepatic function that contraindicates the use of clopidogrel.
11. Known thrombocytopenia (100.000).
12. Participation in other trial.
13. Known multivessel disease identified as no suitable for revascularization.
14. Known peripheral vascular disease that difficult cardiac catheterization.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Spanish Ministry of Health.

UNKNOWN

Sponsor Role collaborator

Ministry of Science and Innovation, Spain

OTHER_GOV

Sponsor Role collaborator

GRACIA Group

OTHER

Sponsor Role lead

Responsible Party

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Hospital General Universitario Gregorio Maranon

Principal Investigators

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Francisco Fernandez-Aviles, MD, PhD

Role: STUDY_CHAIR

ICICOR, Hospital Clínico Universitario Valladolid, Spain

Locations

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Instituto de Ciencias del Corazón (ICICOR). Hospital Clínico Universitario de Valladolid

Valladolid, Valladolid, Spain

Site Status

Countries

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Spain

References

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Sanchez PL, Gimeno F, Ancillo P, Sanz JJ, Alonso-Briales JH, Bosa F, Santos I, Sanchis J, Bethencourt A, Lopez-Messa J, de Prado AP, Alonso JJ, San Roman JA, Fernandez-Aviles F. Role of the paclitaxel-eluting stent and tirofiban in patients with ST-elevation myocardial infarction undergoing postfibrinolysis angioplasty: the GRACIA-3 randomized clinical trial. Circ Cardiovasc Interv. 2010 Aug;3(4):297-307. doi: 10.1161/CIRCINTERVENTIONS.109.920868.

Reference Type DERIVED
PMID: 20716757 (View on PubMed)

Other Identifiers

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GRACIA 3

Identifier Type: -

Identifier Source: org_study_id

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