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

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified March 2013 by Tehran University of Medical Sciences.
Recruitment status was:  Enrolling by invitation
Information provided by (Responsible Party):
Alireza Ghavidel, Tehran University of Medical Sciences Identifier:
First received: March 12, 2013
Last updated: NA
Last verified: March 2013
History: No changes posted
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.

Condition Intervention Phase
Mitral Valve Repair
Device: Artificial Chordae
Phase 1
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Double Blind (Participant, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Phase II Study of Using a New Device (Neochordameter) in Making Artificial Chordae for Mitral Valve Repair

Further study details as provided by Tehran University of Medical Sciences:

Primary Outcome Measures:
  • Mortality [ Time Frame: Early (within 30 days after surgery), Late (After 12 months) ]

Secondary Outcome Measures:
  • Mitral Valve prolapse measurement after using neochordae [ Time Frame: Intra-operation, 3, 6, and 12 months after surgery ]

Other Outcome Measures:
  • Cardiopulmonary bypass time [ Time Frame: During Surgery ]

Estimated Enrollment: 20
Study Start Date: August 2012
Estimated Study Completion Date: August 2014
Estimated Primary Completion Date: August 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
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


Ages Eligible for Study:   Child, Adult, Senior
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

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

Exclusion Criteria:

  • Nothing
  Contacts and Locations
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No Contacts or Locations Provided
  More Information

Responsible Party: Alireza Ghavidel, Associat Professor of Cardiac Surgery, Tehran University of Medical Sciences Identifier: NCT01811537     History of Changes
Other Study ID Numbers: 91-01-149-17122-59685
Study First Received: March 12, 2013
Last Updated: March 12, 2013

Keywords provided by Tehran University of Medical Sciences:
Artificial Chordae
Mitral Valve Repair processed this record on April 28, 2017