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Related Concept Videos

Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...
Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

Mitral regurgitation is characterized by the backward circulation of blood from the left ventricle to the left atrium during systole, a phase of the cardiac cycle when the heart contracts and pumps blood out of the chambers. This abnormal flow occurs primarily due to the dysfunction of the mitral valve or its supporting structures, which include the mitral leaflets, chordae tendineae, annulus, and papillary muscles.Etiology and Mechanisms:Primary Mitral Regurgitation: This type arises from...
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...

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Related Experiment Video

Updated: May 7, 2026

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
08:12

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels

Published on: May 26, 2023

Loop technique for mitral valve repair.

Toshihiko Shibata1

  • 1Department of Cardiovascular Surgery, Osaka City General Hospital, 2-13-22 Miyakojima-hondori, Miyakojima, Osaka, 534-0021, Japan, shibata-cvs@zeus.eonet.ne.jp.

General Thoracic and Cardiovascular Surgery
|September 27, 2013
PubMed
Summary

A novel artificial chordal reconstruction technique uses premeasured expanded polytetrafluoroethylene (ePTFE) loops for mitral valve repair. This safe and reliable method shows excellent survival and low re-operation rates, suitable for various prolapses and surgical approaches.

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Area of Science:

  • Cardiovascular Surgery
  • Biomaterials Science
  • Medical Devices

Background:

  • Mitral valve repair traditionally faces challenges in artificial chordal reconstruction.
  • Existing techniques may lack standardization in chordal length measurement and implantation.
  • The need for reliable and reproducible methods for mitral valve prolapse treatment is critical.

Purpose of the Study:

  • To introduce and evaluate a new artificial chordal reconstruction technique using premeasured expanded polytetrafluoroethylene (ePTFE) loops.
  • To assess the safety, reliability, and efficacy of this loop technique in mitral valve repair.
  • To determine the applicability of the technique across different mitral valve prolapse types and surgical approaches.

Main Methods:

  • Development of a novel technique employing premeasured ePTFE loops for artificial chordal reconstruction.
  • Detailed procedural steps including papillary muscle assessment, loop measurement and creation, anchoring, leaflet fixation, and ring implantation.
  • Application of the technique in patients undergoing mitral valve repair via mini-thoracotomy and median sternotomy.

Main Results:

  • Favorable early and mid-term outcomes reported for the ePTFE loop technique.
  • Achieved 3-year survival rate of 94.8% and re-operation-free rate of 97.4%.
  • Demonstrated suitability for posterior, anterior, and bi-leaflet prolapses, and adaptability to both minimally invasive and conventional sternotomy.

Conclusions:

  • The ePTFE loop technique for artificial chordal reconstruction is safe, reliable, and reproducible.
  • It offers a valuable option for mitral valve repair, accommodating diverse prolapse types.
  • The technique is versatile, applicable to both minimally invasive and conventional surgical approaches.