Functional and Clinical Benefits of PCI in Patients With CTO

November 21, 2011 updated by: Xijing Hospital

Multimodality Imaging Evaluation of Functional and Clinical Benefits of Percutaneous Coronary Intervention in Patients With Chronic Total Occlusion Lesion

The purpose of this study is to compare the diagnostic accuracy of hybrid imaging combining CTCA with low-dose stress-only SPECT vs. coronary angiography for detecting haemodynamic relevant coronary lesions; and second to determine the effects of PCI on cardiac perfusion, cardiac function and quality of life in patients with CTO lesion in left anterior descending (LAD) coronary artery.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Noninvasive imaging modalities have shown high diagnostic accuracy in the detection of coronary artery lesions, and for the estimation of their hemodynamic relevance.Thus, noninvasive assessment of myocardial perfusion defects may be preferred for patients with chronic total occlusion (CTO).

In particular, myocardial perfusion is measured with single photon emission CT (SPECT).Multislice coronary CT angiography (CCTA) with dual-source scanners reveals the anatomic location of coronary artery disease (CAD). These two techniques assess distinct aspects of heart morphology and function parameters of the heart, and should therefore be regarded as complementary rather than competing methods.Taking this into consideration, decisions regarding whether invasive revascularization therapy is adequate or not and which strategy is the best for long-term survival cannot be supported by anatomic information alone. Therefore, noninvasive complementary imaging of structure and perfusion, in conjunction with three-dimensional (3D) image fusion, has emerged as a technique for reliable allocation of perfusion defects to their supplying coronary artery.

Study Type

Interventional

Enrollment (Anticipated)

150

Phase

  • Not Applicable

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

  • China
    • Shaanxi
      • Xi'an, Shaanxi, China, 710032
        • Recruiting
        • Fourth Military Medical University
        • Contact:

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

No older than 70 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients were eligible for enrolment in this study if coronary angiography showed a CTO (at least for 3 months and confirmed by angiography and/or history of earlier MI).

Exclusion Criteria:

  • Hypersensitivity to iodinated contrast agent, cardiomyopathy, non-sinus rhythm, severe valvular heart disease, NYHA functional class IV heart failure at baseline, previous coronary bypass surgery, renal insufficiency, severe lung and liver disease or cancer.

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: Group a
no severe cardiac perfusion defects
Device: Percutaneous coronary intervention, PCI
PCI was performed using standard techniques for CTO.
Other Names:
  • Effect
  • Xijing Hospital, Fourth Military Medical University
Experimental: Gooup b
reversible cardiac perfusion defects
Device: Percutaneous coronary intervention, PCI
PCI was performed using standard techniques for CTO.
Other Names:
  • Effect
  • Xijing Hospital, Fourth Military Medical University
Experimental: Group c
irreversible cardiac perfusion defects
Device: Percutaneous coronary intervention, PCI
PCI was performed using standard techniques for CTO.
Other Names:
  • Effect
  • Xijing Hospital, Fourth Military Medical University

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Left ventricular ejection fraction
Time Frame: 2year
2year

Secondary Outcome Measures

Outcome Measure
Time Frame
Target lesion revascularization
Time Frame: 2 year
2 year
cardiac death
Time Frame: 2year
2year
Non-fatal myocardial infarction
Time Frame: 2 year
2 year
Angina pectoris score index
Time Frame: 2 year
2 year
Six-minute walk distance
Time Frame: 2 year
2 year

Collaborators and Investigators

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

Sponsor

Xijing Hospital

Investigators

  • Principal Investigator: Feng Cao, MD, PhD, Air Force Military Medical University, China

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

October 1, 2008

Primary Completion (Actual)

March 1, 2010

Study Completion (Anticipated)

November 1, 2011

Study Registration Dates

First Submitted

December 1, 2010

First Submitted That Met QC Criteria

December 3, 2010

First Posted (Estimate)

December 6, 2010

Study Record Updates

Last Update Posted (Estimate)

November 22, 2011

Last Update Submitted That Met QC Criteria

November 21, 2011

Last Verified

November 1, 2011

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • EFFECT

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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