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Mitral Stenosis II: Clinical features and Diagnostic Tests01:23

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Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
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Mitral regurgitation (MR) is a valvular heart disorder in which the mitral valve fails to close tightly, allowing blood to leak backward into the heart. Understanding the clinical manifestations, assessment, diagnostic findings, and medical management of MR is crucial to effectively managing affected patients.Clinical Manifestations of Mitral RegurgitationMitral regurgitation can be acute or chronic, each presenting differently and requiring different approaches:1. Acute Mitral...
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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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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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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 Annular Disjunction Assessed Using Cardiac MR Imaging in Pediatric Patients.

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Diagnostics (Basel, Switzerland)
|November 27, 2025
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Summary

Cardiac magnetic resonance (CMR) imaging detects mitral annular disjunction (MAD) and mitral valve prolapse (MVP) more effectively than echocardiography in children. CMR aids in early diagnosis and risk stratification for mitral annular abnormalities.

Keywords:
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Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Mitral annular disorders impact adult and pediatric morbidity/mortality.
  • Mitral annular disjunction (MAD) and mitral valve prolapse (MVP) are linked to valvular dysfunction and arrhythmias.
  • Cardiac magnetic resonance (CMR) imaging offers high-resolution characterization of these conditions.

Purpose of the Study:

  • Determine MAD prevalence in a pediatric cohort.
  • Investigate the association between MAD and MVP.
  • Identify CMR findings, including myocardial fibrosis, related to MAD and MVP.

Main Methods:

  • Retrospective review of 295 pediatric CMR studies.
  • Systematic comparison of echocardiography and CMR for MAD, MVP, and mitral regurgitation (MR) detection.
  • Analysis of annular measurements and late gadolinium enhancement (LGE) for fibrosis.

Main Results:

  • CMR detected MAD (23.2%) and MVP (34.2%) more frequently than echocardiography.
  • Moderate agreement for MAD, moderate-to-substantial for MVP, and fair for MR between modalities.
  • Myocardial fibrosis (LGE) was observed only in patients with both MAD and MVP.

Conclusions:

  • CMR exhibits superior sensitivity for detecting pediatric MAD and MVP compared to echocardiography.
  • CMR enables early recognition of annular dissociation, potentially preventing advanced remodeling.
  • CMR is valuable for comprehensive assessment, risk stratification, and follow-up of pediatric mitral annular abnormalities.