Comparison Between Main Branch and Side Branch Vessels

August 18, 2011 updated by: Bon-Kwon Koo, Seoul National University Hospital

Comparison of Clinical, Electrical and Physiologic Significance Between Main Branch and Side Branch Vessels

The purpose of this trial is

  1. to compare the clinical significance of the main vessel and the side branch vessel using EKG, pain score and coronary wedge pressure
  2. to develop a new scoring system to predict the clinical significance of a side branch

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

  1. Clinical significance EKG change, pain score during 1 min balloon occlusion
  2. Different characteristics between ST segment elevation vs non-elevation side branches
  3. Comparison of coronary wedge pressure
  4. Establishing a new scoring system to predict the ST elevation during 1min balloon occlusion

Study Type

Observational

Enrollment (Anticipated)

51

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

  • Korea, Republic of
      • Seoul, Korea, Republic of, 110-744
        • Seoul National University Hospital

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

Sampling Method

Non-Probability Sample

Study Population

Patients with significant coronary artery disease, involving the bifurcation lesions

Description

Inclusion Criteria:

  • Age ≥ 18
  • Able to verbally confirm understandings of risks, benefits of receiving percutaneous coronary intervention (PCI) for true bifurcation lesions, and he/she or his/her legally authorized representative provides written informed consent prior to any study related procedure
  • Significant stenosis at bifurcation lesion (>50% by visual estimate) which always includes stenosis of side branch (true bifurcation)
  • Target main branch lesion(s) located in a native coronary artery with diameter of ≥ 2.5 mm and ≤ 4.5 mm. Target side branch lesion(s) in a native coronary artery with diameter of ≥ 2.25 mm
  • Target lesion(s) amenable for PCI with final kissing balloon angioplasty for the side branch

Exclusion Criteria:

  • Non-cardiac co-morbid conditions are present with life expectancy <1 year or that may result in protocol non-compliance (per site investigator's medical judgment)
  • Patients refuse to give informed consent
  • Patients with left main coronary artery stenosis
  • Patients with total occlusion of the bifurcation lesion
  • Patients with infarct-related artery at the lesion of interest
  • Patients with left ventricular ejection fraction<40%
  • Patients with primary cardiomyopathy
  • Patients with chronic kidney disease defined as serum Cr>2.0
  • Patients who have severe side effects or contraindication to adenosine

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

  • Observational Models: Case-Only
  • Time Perspectives: Cross-Sectional

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
Main vessel, side branch vessel
Other: Measuring collateral flow
Measuring collateral flow using pressure and/or velocity coronary wire

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
ST elevation during 1min balloon occlusion
Time Frame: Day 1 after PCI
Day 1 after PCI

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Pain score during 1min balloon occlusion
Time Frame: Day 1 after PCI
Day 1 after PCI
coronary wedge pressure
Time Frame: during the procedure
during the procedure
Usefulness of new scoring system
Time Frame: During the procedure
New scoring system includes the vessel size, myocardial territory and relationship with neighboring branches
During the procedure

Collaborators and Investigators

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

Sponsor

Seoul National University Hospital

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 (Anticipated)

December 1, 2011

Study Completion (Anticipated)

December 1, 2011

Study Registration Dates

First Submitted

January 8, 2010

First Submitted That Met QC Criteria

January 10, 2010

First Posted (Estimate)

January 12, 2010

Study Record Updates

Last Update Posted (Estimate)

August 22, 2011

Last Update Submitted That Met QC Criteria

August 18, 2011

Last Verified

August 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-0910-003-062

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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