Medical Versus Surgical Management of Moderate Mitral Regurgitation Following Percutaneous Coronary Intervention

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

WITHDRAWN

Clinical Phase

PHASE1/PHASE2

Study Classification

INTERVENTIONAL

Study Start Date

2010-07-31

Study Completion Date

2014-06-30

Brief Summary

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The pilot prospective randomized trial is designed to determine the safety and feasibility of enrolling patients to surgically correct residual Mitral Regurgitation (MR) following Percutaneous Coronary Intervention (PCI) for Myocardial Infarction (MI) verses ongoing medical management of MR. The investigators hypothesize that if moderate MR is corrected in this patient subset, the patients will have improved outcomes as measured by decreased number of major adverse cardiac events, including death, congestive heart failure requiring hospitalization, atrial fibrillation, deterioration of New York Heart Association (NYHA) functional status and improved quality of life.

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Detailed Description

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Mitral regurgitation (MR) is a frequent complication of myocardial infarction. Ischemic MR portends a poor prognosis on long term follow up. This pilot prospective randomized trial is a safety and feasibility trial to evaluate mitral valve repair versus surgical management in patients with residual MR after primary percutaneous coronary intervention (PCI). Patients will be screened for possible inclusion to identify those that have first MI treated with primary PCI. Patients with moderate MR at 6 or more weeks following first primary PCI will be randomized to continued medical management versus surgical mitral valve repair. Patients with previous or subsequent coronary artery bypass surgery and patients with severe ventricular dysfunction will be excluded. Patients will be followed for one year from the time of randomization. The safety and feasibility data will be used to design a large trial powered to detect a difference in mortality between treatment arms.

Results of this study could lead to a radical change in the treatment paradigm for patients with ischemic MR following PCI for acute MI. In addition, insight gained from this study could advance our understanding of the interrelationship between LV remodeling and MR and shed some light into the mechanism of ventricular function deterioration following MI. Moreover, it may provide a framework for the development of further recommendations with respect to the indications for surgical intervention in this patient population.

Conditions

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Myocardial Infarction Mitral Regurgitation

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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surgical mitral valve repair

Non-invasive transesophageal echocardiography will be performed on all study volunteers to determine if the individual has mitral regurgitation and, if so, to what degree. Mitral valve repair will be performed with mitral valve annuloplasty via median sternotomy, utilizing cardiopulmonary bypass and moderate hypothermia.

Group Type EXPERIMENTAL

surgical mitral valve repair w/ mitral valve annuloplasty

Intervention Type PROCEDURE

Mitral valve repair will be performed via median sternotomy, utilizing cardiopulmonary bypass and moderate hypothermia. The mitral valve will be approached through a left atrial incision. Following inspection of the valve, mitral valve annuloplasty will be accomplished with a complete semi-rigid annuloplasty ring. Additional techniques to address residual regurgitation will be at the discretion of the surgeon. The left atriotomy will then be closed and the patient weaned off and separated from the cardiopulmonary bypass.

Intraoperative transesophageal echocardiography will be performed on all study volunteers.

control: medical management

Clinical observation will be continued without surgery. Non-invasive transesophageal echocardiography will be performed on all study volunteers to determine if the individual has mitral regurgitation and, if so, to what degree.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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surgical mitral valve repair w/ mitral valve annuloplasty

Mitral valve repair will be performed via median sternotomy, utilizing cardiopulmonary bypass and moderate hypothermia. The mitral valve will be approached through a left atrial incision. Following inspection of the valve, mitral valve annuloplasty will be accomplished with a complete semi-rigid annuloplasty ring. Additional techniques to address residual regurgitation will be at the discretion of the surgeon. The left atriotomy will then be closed and the patient weaned off and separated from the cardiopulmonary bypass.

Intraoperative transesophageal echocardiography will be performed on all study volunteers.

Intervention Type PROCEDURE

Other Intervention Names

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mitral valve annuloplasty

Eligibility Criteria

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Inclusion Criteria

* Patients who have undergone PCI for first acute MI (index MI) since 7/1/09 at MMC and STJ
* documented moderate mitral regurgitation on follow up echocardiography six or more weeks after PCI procedure
* English speaking

Exclusion Criteria

* CABG after PCI for acute MI
* History of previous MI prior to index MI
* History of previous PCI or CABG prior to index PCI
* EF \<30 % on the echocardiogram at 6 weeks after PCI for MI

Minimum Eligible Age

19 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No