Safety and Efficacy Study of a New Device for Making Neochordae in Mitral Valve Repair

March 12, 2013 updated by: Alireza Ghavidel, Tehran University of Medical Sciences

Phase II Study of Using a New Device (Neochordameter) in Making Artificial Chordae for Mitral Valve Repair

Mitral prolapse is a common cardiac disease whose patients are at higher risk for serious complications. Mitral valve (MV) repair offers several important advantages compared with valve replacement and it achieves excellent midterm and long-term results. Two major problems of using pre-measured expanded polytetrafluoroethylene(ePTFE) neochordae (the loop technique) are deciding the length of the neochordae and tying the knot at the intended length. Therefore, a great need still exists to find new method to simplify and precise the length of neochordae. 20 patients with mitral valve prolapse who undergo mitral valve repair using neochorda will be recruited in this study. Trans thoracic echocardiography (TTE) will be done preoperatively for all patients. Two, three, and four chamber view of each patient will be pre-operatively recorded. The device will be set with extracted measurements. Artificial corda loops are made using CV-4 ePTFE sutures. After artificial chordae replacement, the ring annuloplasty will be done. Follow up: A leakage test after attaching the 1st loop; Post operative trans esophageal echocardiography (TEE) and determining the severity of mitral regurgitation [Wall motion Score Index (WMSI), Mitral Annulus Area (MAA), LVEF, End Systolic Volume (ESV), End Diastolic Volume (EDV), Iso-Volemic Relaxation Time (IVRT), (IVRT/(QE-QE^') ,Chamber Relaxation velocity)/(Myocard relaxation velocity(E/E^' ), HR]; TEE 3 months after discharge; Cross clamp time; Intubation period in ICU.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

20

Phase

  • Phase 2
  • Phase 1

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients with Mitral valve prolapse who undergo mitral valve repair using neochorda

Exclusion Criteria:

  • Nothing

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Experimental: premeasured Neochordae
Transthoracic echocardiography(TTE) is done for all patients. The new device will be setup using the TTE measurements.The artificial Chordae loops will be made at the operation room before starting the surgery. These loops will be attached to the respective papillary muscle's head and the free edge of respective prolapsed scallop.
Device: Artificial Chordae

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Mortality
Time Frame: Early (within 30 days after surgery), Late (After 12 months)
Early (within 30 days after surgery), Late (After 12 months)

Secondary Outcome Measures

Outcome Measure
Time Frame
Mitral Valve prolapse measurement after using neochordae
Time Frame: Intra-operation, 3, 6, and 12 months after surgery
Intra-operation, 3, 6, and 12 months after surgery

Other Outcome Measures

Outcome Measure
Time Frame
Cardiopulmonary bypass time
Time Frame: During Surgery
During Surgery

Collaborators and Investigators

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

Sponsor

Tehran University of Medical Sciences

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

August 1, 2012

Primary Completion (Anticipated)

August 1, 2013

Study Completion (Anticipated)

August 1, 2014

Study Registration Dates

First Submitted

March 12, 2013

First Submitted That Met QC Criteria

March 12, 2013

First Posted (Estimate)

March 14, 2013

Study Record Updates

Last Update Posted (Estimate)

March 14, 2013

Last Update Submitted That Met QC Criteria

March 12, 2013

Last Verified

March 1, 2013

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 91-01-149-17122-59685

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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