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Related Concept Videos

Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

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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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Mitral Regurgitation III: Medical Management01:25

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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...
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Mitral Regurgitation I: Introduction01:20

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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...
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Mitral Valve Prolapse I: Introduction01:27

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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...
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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...
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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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Redo mitral valve replacement using the valve-on-valve method.

Satoshi Miyairi1, Masaaki Koide2, Yoshifumi Kunii2

  • 1Department of Cardiovascular Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan sa_msa_m@yahoo.co.jp.

Asian Cardiovascular & Thoracic Annals
|March 4, 2014
PubMed
Summary

Bioprosthetic valve failure is increasing due to longer lifespans. Valve-on-valve mitral valve replacement offers a viable solution for reoperation in cases of primary tissue failure.

Keywords:
Heart valve prosthesis implantationmitral valveprosthesis failurereoperationsuture techniques

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Biomaterials Science

Background:

  • Bioprosthetic heart valves are increasingly used but prone to deterioration over time.
  • Increased human life expectancy leads to a higher incidence of bioprosthetic valve failure, necessitating reoperation.
  • Primary tissue failure of bioprosthetic valves presents a complex surgical challenge.

Observation:

  • Two cases of primary tissue failure in bioprosthetic mitral valves are presented.
  • Reoperations were required due to severe calcification of the valve annulus and severe adhesion of the prior bioprosthesis.
  • The valve-on-valve technique involved removing only the leaflets of the failed bioprosthesis.

Findings:

  • A Carbomedics OptiForm valve was successfully implanted onto the sewing cuff of the previous bioprosthesis in both cases.
  • The valve-on-valve mitral valve replacement procedure was performed without complications.
  • No major adverse cardiac events were observed during the follow-up period.

Implications:

  • The valve-on-valve technique is a feasible and safe option for managing primary bioprosthetic mitral valve failure.
  • This approach may help avoid complex debridement and facilitate reoperation in challenging cases.
  • Further research is warranted to evaluate long-term outcomes and expand the application of this technique.