Mechanism Of Stent Thrombosis (MOST) Study (Most)

September 24, 2014 updated by: David Antoniucci, Careggi Hospital

Mechanism Of Stent Thrombosis (MOST) Study, a Prospective Multicentre Non-randomized Registry

This study is designed to assess the pathophysiology of ST by studying the main procedural and anatomical factors involved in the genesis of ST such as those related to stent and the vascular wall, as well as to the individual platelet residual reactivity.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

20

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Italy
      • Florence, Italy
        • Careggi Hospital, Department of Hearth and Vessels

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • previous PCI with bare metal stent (BMS) or drug eluting stent (DES) and a definite subacute coronary ST
  • previous PCI with DES and a definite late or very late coronary ST

Exclusion Criteria:

  • Development of ST within 72 hours of stent implantation (acute and early subacute ST).
  • Late and very late ST of BMS.
  • Absence of informed consent.
  • Age less than 18 years.
  • Creatinine values greater than 2.5 g/dl (this is to avoid the negative effects related to the contrast medium necessary to perform the OCT evaluation).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Stent Thrombosis
Consecutive patients with stent thrombosis with stent strut assessment by OCT
Device: OCT guided PCI
OCT guided PCI. Only thrombectomy in case of negative OCT findings (other than uncovered struts).
Active Comparator: Controls
Control subjects without stent thrombosis from the RHR OCT database
Drug: OCT guided medical therapy
OCT guided medical therapy. Tailored antiplatelet therapy.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of uncovered stent struts
Time Frame: After thrombectomy
The percentage of uncovered stent struts by OCT in patients with subacute stent thrombosis (either DES and BMS) and the percentage of uncovered stent struts in patients with late (after one month) and very late thrombosis of DES.
After thrombectomy

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of malapposed stent struts
Time Frame: After Thrombectomy
The percentage of malapposed stent struts by OCT in patients with subacute thrombosis of DES and BMS and the percentage of malapposed stent struts by OCT in patients with late and very late thrombosis of DES.
After Thrombectomy
Percentage of patients with high residual platelet reactivity
Time Frame: Baseline
The percentage of patients with residual platelet reactivity (RPR) to ADP and arachidonic acid identified by values ≥ 240 P2Y12 reaction units (PRU) and ≥ 550 aspirin reaction units (ARU), respectively,. during aspirin and clopidogrel therapy or in which one or both the antiplatelet drugs have been interrupted.
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Careggi Hospital

Investigators

  • Study Chair: David Antoniucci, MD, Careggi Hospital, Division of Invasive Cardiology
  • Principal Investigator: Francesco Prati, MD, Rome Heart Research

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2010

Primary Completion (Actual)

August 1, 2011

Study Completion (Actual)

October 1, 2011

Study Registration Dates

First Submitted

August 4, 2011

First Submitted That Met QC Criteria

August 4, 2011

First Posted (Estimate)

August 5, 2011

Study Record Updates

Last Update Posted (Estimate)

September 25, 2014

Last Update Submitted That Met QC Criteria

September 24, 2014

Last Verified

September 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • MOST Study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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