Related Experiment Video
Updated: Jan 11, 2026
08:12
Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels
Published on: May 26, 2023
2.2K
Managing The Mitral Valve In HCM Surgery: Tips And Tricks
Sara Ranchordás1, Miguel Abecasis1, Eduard Quintana2
1Cardiac Surgery, Hospital Santa Cruz, ULSLO, Carnaxide, Portugal.
Portuguese Journal of Cardiac Thoracic and Vascular Surgery
|November 13, 2025
Summary
Mitral regurgitation in hypertrophic cardiomyopathy is often caused by systolic anterior motion (SAM) of the mitral valve (MV). Other structural issues may also contribute, requiring tailored surgical approaches for effective treatment.
Area of Science:
- Cardiology
- Cardiac Surgery
- Echocardiography
Background:
- Mitral regurgitation (MR) in hypertrophic cardiomyopathy (HCM) patients is primarily attributed to systolic anterior motion (SAM) of the mitral valve (MV).
- Additional structural abnormalities, including mitral leaflet elongation, papillary muscle anomalies, and mitral-aortic discontinuity, can contribute to MR in HCM.
- Intraoperative echocardiography is crucial for assessing MV function and regurgitant jets to identify all contributing mechanisms of MR.
Purpose of the Study:
- To elucidate the diverse mechanisms of mitral regurgitation in hypertrophic cardiomyopathy patients.
- To highlight the importance of comprehensive echocardiographic evaluation for identifying concomitant causes of MR beyond SAM.
- To discuss surgical strategies for addressing SAM and associated mitral valve abnormalities in HCM.
Main Methods:
- Review of echocardiographic findings in HCM patients with mitral regurgitation.
- Analysis of intraoperative echocardiographic assessments to identify SAM and other structural causes of MR.
- Evaluation of surgical techniques employed for correction of SAM and mitral valve disease.
Main Results:
- Systolic anterior motion (SAM) is the predominant cause of MR in HCM, but other factors like leaflet abnormalities and mitral-aortic discontinuity can coexist.
- Preoperative identification of concomitant MR mechanisms is possible through structural detection or pharmacological provocation.
- Surgical interventions may include myectomy, mitral valve repair (e.g., AML plasty, papillary muscle reorientation, edge-to-edge repair), or replacement, depending on the specific pathology.
Conclusions:
- Effective management of MR in HCM requires a thorough understanding of all contributing mechanisms, not solely SAM.
- Tailored surgical approaches, addressing both SAM and intrinsic mitral valve disease, are essential for optimal outcomes.
- Postoperative echocardiography, including provocative testing, confirms the elimination of SAM, LVOT obstruction, and resolution of MR.
More Related Videos
Related Concept Videos
01:26Mitral Stenosis III: Medical Management
229
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...
229
01:29Cardiomyopathy V: Interprofessional Care
323
Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
323
01:25Mitral Regurgitation III: Medical Management
261
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...
261
01:22Mitral Valve Prolapse II: Assessment and Management
397
IntroductionA range of clinical features characterizes Mitral Valve Prolapse (MVP), but it is important to note that many individuals with MVP are asymptomatic and may remain so throughout their lives. For those who do exhibit symptoms, the following are the key clinical features:Palpitations: This is a common symptom where individuals feel an irregular or rapid heartbeat. Palpitations in MVP are often due to arrhythmias such as premature ventricular contractions or supraventricular...
397
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy
380
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
380
01:28Cardiomyopathy VII: Pre and Post Operative Nursing Management
268
Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...
268