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Related Concept Videos

Mitral Regurgitation I: Introduction01:20

Mitral Regurgitation I: Introduction

364
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...
364
Mitral Regurgitation III: Medical Management01:25

Mitral Regurgitation III: Medical Management

245
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...
245
Mitral Valve Prolapse I: Introduction01:27

Mitral Valve Prolapse I: Introduction

340
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...
340
Mitral Stenosis I: Introduction01:22

Mitral Stenosis I: Introduction

384
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...
384
Aortic Regurgitation I: Introduction01:15

Aortic Regurgitation I: Introduction

427
IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
427
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

219
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...
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Related Experiment Video

Updated: Jan 8, 2026

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
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Loop technique-based artificial chordae reconstruction in mitral regurgitation.

Takayoshi Kato1, Shojiro Yamaguchi2, Takatomo Watanabe3

  • 1Department of Cardiovascular Surgery, Gifu University Hospital, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan. kato.takayoshi.f9@f.gifu-u.ac.jp.

Heart and Vessels
|December 22, 2025
PubMed
Summary

The novel Referring to the Anterior, Fixing on the Frontal (RAFF) method for mitral valve repair using artificial chordae significantly reduces residual regurgitation and leaflet billowing. This technique enhances anatomical precision and reproducibility for durable mitral competence.

Keywords:
Artificial chordae reconstructionLoop techniqueMitral regurgitationMitral valve repairRAFF method

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Area of Science:

  • Cardiovascular Surgery
  • Cardiac Valve Repair
  • Biomedical Engineering

Background:

  • Mitral regurgitation necessitates effective repair techniques.
  • Artificial chordae reconstruction is a key element in mitral valve repair.
  • Standardization and anatomical precision are crucial for reproducible outcomes.

Purpose of the Study:

  • To evaluate the clinical utility of the novel Referring to the Anterior, Fixing on the Frontal (RAFF) method for mitral valve repair.
  • To assess the RAFF technique's impact on anatomical precision, reproducibility, and clinical outcomes.
  • To compare the RAFF method with conventional techniques in terms of mitral regurgitation and leaflet function.

Main Methods:

  • Retrospective study of 67 patients undergoing elective mitral valve repair with artificial chordae.
  • Comparison between the RAFF technique group (n=36) and a non-RAFF group (n=31).
  • RAFF technique involves referencing anterior leaflet chordae and frontal papillary muscle fixation for neochordae.

Main Results:

  • The RAFF group showed significantly less residual mitral regurgitation post-surgery (p=0.014).
  • RAFF method use was associated with reduced postoperative leaflet billowing and lower recurrence of moderate/severe mitral regurgitation.
  • Increased coaptation length, reduced aortic cross-clamp time, and no adverse hemodynamic effects were observed with RAFF.

Conclusions:

  • The RAFF technique provides a standardized, anatomically guided approach to artificial chordae reconstruction.
  • It minimizes inter-surgeon variability and improves leaflet coaptation for durable mitral repair.
  • The RAFF method offers a safe and effective alternative for mitral valve repair, enhancing clinical outcomes.