Related Experiment Video
Updated: Jul 12, 2025
08:42
Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
Published on: February 11, 2022
3.5K
[Mitral valve replacement in patients with obstructive hypertrophic cardiomyopathy]
A V Lysenko1, G I Salagaev1, P V Lednev1
1Petrovsky National Research Center of Surgery, Moscow, Russia.
Khirurgiia
|November 2, 2023
Summary
Mitral valve replacement is sometimes necessary after septal myectomy for obstructive hypertrophic cardiomyopathy (HCM) if severe mitral insufficiency persists. This involuntary strategy addresses high left ventricular outflow tract pressure gradients.
Area of Science:
- Cardiovascular Surgery
- Cardiology
- Cardiac Valve Disease
Context:
- Obstructive hypertrophic cardiomyopathy (HCM) often involves severe mitral valve insufficiency.
- Surgical intervention aims to relieve left ventricular outflow tract (LVOT) obstruction and address mitral valve issues.
- Chronic heart failure (NYHA class III) is a common presentation in these patients.
Purpose:
- To determine the incidence and etiological factors of mitral valve replacement (MVR) in patients with obstructive HCM.
- To analyze outcomes of surgical correction for LVOT obstruction and mitral valve repair.
Summary:
- A study of 172 patients with obstructive HCM and severe mitral insufficiency found that 12 (7.0%) required mitral valve replacement.
- In 5 cases, MVR was primary due to organic mitral valve lesions; in 7 cases, it was necessitated by ineffective septal myectomy.
- Successful surgical correction of LVOT obstruction and mitral valve repair was achieved in 93.0% of patients.
Impact:
- Mitral valve replacement emerges as an involuntary but necessary strategy when septal myectomy is ineffective in resolving severe mitral insufficiency and high LVOT pressure gradients.
- Findings inform surgical decision-making for complex HCM cases requiring combined LVOT decompression and mitral valve intervention.
Related Concept Videos
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy
15
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...
15
01:29Cardiomyopathy V: Interprofessional Care
14
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...
14
01:26Mitral Stenosis III: Medical Management
12
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...
12
01:28Cardiomyopathy VII: Pre and Post Operative Nursing Management
15
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...
15
01:22Mitral Valve Prolapse II: Assessment and Management
19
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...
19
01:25Mitral Regurgitation III: Medical Management
18
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...
18